CN110162430B

CN110162430B - Temperature self-adaption method, device and equipment

Info

Publication number: CN110162430B
Application number: CN201810150443.7A
Authority: CN
Inventors: 陈锐; 唐甜
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-02-13
Filing date: 2018-02-13
Publication date: 2021-11-09
Anticipated expiration: 2038-02-13
Also published as: CN110162430A

Abstract

The application provides a temperature self-adaptive method, a device and equipment. The method comprises the steps of setting a standby channel for a data transmission channel of a chip interface, configuring the standby channel into an adaptive parameter in advance according to the trend of the external temperature change of the interface when the temperature does not reach a temperature critical point according to the trend of the external temperature change of the interface when the external temperature of the interface changes, wherein the adaptive parameter can adapt to the external temperature of the interface after the temperature critical point is reached, and switching the data transmission channel to the standby channel when the external temperature of the interface reaches the temperature critical point, so that the temperature self-adaption of the chip interface is realized, and the interface can meet the performance requirement in a wider temperature range.

Description

Temperature self-adaption method, device and equipment

Technical Field

The present application relates to the field of communications technologies, and in particular, to a temperature adaptive method, apparatus, and device.

Background

The chip includes an interface and a processor. The interface is used for sending and receiving signals and comprises a sending channel and a receiving channel. A processor, such as a Central Processing Unit (CPU), a Micro Controller Unit (MCU), or a Micro Processing Unit (MPU), is connected to the interface for managing and controlling the interface. The performance of the interface is affected by the temperature outside the interface, and especially for a high-speed interface of a chip, the temperature has a significant influence on the performance. In order to solve the problem of temperature self-adaptation of a chip interface and enable the interface to maintain stable and good performance at different temperatures, two methods are mainly used at present:

one is to add a temperature compensation circuit for the interface, and design the compensation circuit by using the characteristic that elements such as a diode and a triode change along with the temperature, so as to reduce the influence of the temperature on the interface circuit. However, the temperature compensation circuit of pure hardware has a small temperature adaptation range, a complex circuit design, difficult uniform device selection, and a low chip yield, and a limited application range, and cannot meet the requirement of chip interface performance consistency.

Secondly, the interface is tested firstly, the adaptive parameters of the interface in the set temperature sections (such as the set low temperature section, the set normal temperature section and the set high temperature section) are counted to obtain adaptive parameter sets corresponding to different temperature sections, then the intersection of the adaptive parameter sets is obtained, and the adaptive parameters in the intersection are used as the fixed configuration parameters of the interface, so that the interface can adapt to various temperatures. The method does not depend on hardware, but the intersection is probably not obtained, the number of chip samples actually tested is generally not large, the chip discreteness is large, and even if the intersection can be obtained, the parameters in the intersection cannot be matched with all chips, so that the problems of high reject ratio, poor temperature adaptability of chip interfaces, poor performance consistency of chip interfaces and limited application range can be caused.

Disclosure of Invention

The application provides a temperature self-adaptive method, a temperature self-adaptive device and temperature self-adaptive equipment, which are used for improving the temperature self-adaptive performance and the performance consistency of a chip interface.

In a first aspect, the present application provides a temperature adaptive method, the method comprising: if the external temperature of the interface is in an ascending trend, when the external temperature of the interface does not reach a first temperature critical point of the ascending trend, configuring parameters of a standby data transmission channel into first adaptive parameters, and when the external temperature of the interface reaches the first temperature critical point, switching the data transmission channel of the interface to the standby data transmission channel; if the external temperature of the interface is in a descending trend, when the external temperature of the interface does not reach a second temperature critical point of the descending trend, configuring the parameters of the standby data transmission channel as second adaptive parameters; and when the external temperature of the interface reaches the second temperature critical point, switching the data transmission channel of the interface to the standby data transmission channel.

The method sets a standby channel for the data transmission channel of the interface, namely the standby data transmission channel, when the external temperature of the interface changes, according to the trend of the external temperature of the interface, when the external temperature of the interface does not reach the temperature critical point of the temperature change trend, the standby channel is configured into an adaptive parameter in advance, the adaptive parameter is adapted to the temperature after the external temperature of the interface reaches the temperature critical point, when the external temperature of the interface reaches the temperature critical point, the data transmission channel is switched to the standby data transmission channel, because the adaptive parameter configured by the standby data transmission channel is adapted to the external temperature of the current interface, the interface can keep stable and good performance under the external temperature of the current interface, the self-adaptation of the chip interface to the temperature is realized, the capability of the interface to cope with the temperature change is improved, and the interface can meet the performance requirement in a wider temperature range, and because the method is carried out in a mode of adjusting parameters and controlling switching by software and is not limited by the difference of hardware between chips, the method can also improve the consistency of the yield of the chips and the performance of chip interfaces.

The data transmission channel may be a sending channel and/or a receiving channel of an interface. Compared with the method that the standby channel is only arranged on the sending channel or the receiving channel, the temperature self-adaption capability of the interface can be better improved.

In a possible implementation manner, the method further includes: acquiring interface external temperature, and calculating the difference value of the interface external temperature obtained in the next time minus the interface external temperature obtained in the previous time in the interface external temperatures obtained in the two adjacent times; if the calculated difference value is a positive number for k times continuously, the external temperature of the interface is in an ascending trend; if the calculated difference value is negative for t times continuously, the external temperature of the interface is in a descending trend; wherein k and t are preset positive integers. Therefore, the change trend of the external temperature of the interface can be determined.

If the interface external temperature is in an ascending trend, the first temperature critical point is greater than the current interface external temperature and is a preset temperature critical point which is closest to the current interface external temperature in the plurality of temperature critical points; if the interface external temperature is in a descending trend, the second temperature critical point is a preset temperature critical point which is smaller than the current interface external temperature and is closest to the current interface external temperature in the plurality of temperature critical points. When there are a plurality of temperature critical points, the temperature critical point at which channel switching should be performed can be determined therefrom.

The data transmission channel and the standby data transmission channel are mutually standby channels, and the data transmission channel which does not work at present is the standby channel of the data transmission channel in work. The data transmission channel and the spare transmission channel may have the same structure, or the data transmission channel and the spare data transmission channel may have different structures and have completely identical input and output. Specifically, the data transmission channel may be a sending channel and/or a standby channel, the sending channel and the standby sending channel are standby channels, and the receiving channel and the standby receiving channel are standby channels. The structure of the standby sending channel can be the same as that of the sending channel, and the standby sending channel can also be a channel which has a different structure from that of the sending channel but has completely consistent input, output and sending channels; the structure of the spare receiving channel can be the same as that of the receiving channel, and the spare receiving channel can also be a channel which is different from the receiving channel in structure but identical in input, output and receiving channels.

The first adaptive parameter, the second adaptive parameter, the first temperature critical point and the second temperature critical point are obtained and stored through a chip sample test in advance. The first adaptive parameter corresponds to the first temperature critical point and the upward trend, and the second adaptive parameter corresponds to the second temperature critical point and the downward trend. The corresponding table of each adaptive parameter and each temperature critical point and the interface external temperature variation trend (rising or falling) can be preserved in advance, and then the corresponding adaptive parameter is determined according to the interface external temperature variation trend and the temperature critical point of the temperature variation trend. If the external temperature of the interface is segmented in advance, and each temperature segment corresponds to one or more groups of adaptation parameters, the first adaptation parameter or the second adaptation parameter can be determined according to the change trend (rising or falling) of the external temperature of the interface and the current external temperature of the interface, that is, the temperature segment to be reached is determined according to the change trend of the external temperature of the interface and the current external temperature of the interface, and the adaptation parameter corresponding to the temperature segment is selected as the first adaptation parameter or the second adaptation parameter. If each temperature segment corresponds to multiple sets of adaptive parameters, one set of adaptive parameters can be randomly selected from the multiple sets of adaptive parameters for configuration.

In a possible implementation manner, the data transmission channel is a receiving channel of an interface, and the standby data transmission channel is a standby channel of the receiving channel, and the method may further include: detecting the amplitude of the signal received by the data transmission channel or the spare data transmission channel, and calculating the difference value of the amplitude obtained in the previous time subtracted from the amplitude obtained in the next time in the amplitudes of the signals obtained in the two adjacent times; if the difference value is greater than or equal to 0, accumulating the time count until the difference value is less than 0, and stopping the time count; if the time counting is stopped, the time counting value is smaller than a preset first threshold value, the time counting accumulation is continued, and the time counting is stopped until the difference value is smaller than 0; if the time counting is stopped, the time counting value is larger than or equal to the first threshold value, the time counting value is recorded, the time counting value is the sum of the rising edge time and the peak value holding time of the signal, the maximum amplitude value of the detected signal in the time counting accumulation process is recorded, and the time counting is cleared; if the difference value is less than or equal to 0, accumulating the time count until the difference value is greater than 0, and stopping the time count; if the time counting is stopped, the time counting value is smaller than a preset second threshold value, the time counting accumulation is continued, and the time counting is stopped until the difference value is larger than 0; and if the time counting is stopped, recording the time counting value which is the sum of the falling edge time of the signal and the minimum value holding time and recording the minimum amplitude of the detected signal in the time counting accumulation process, and resetting the time counting.

Wherein the initial value of the time count is 0. The first threshold value and the second threshold value can be obtained through simulation according to various factors such as the line rate of a chip interface, a plate used by a chip, the length of a routing and the like.

The implementation mode can obtain the peak value and the minimum value of the received signal, the obtained time count value is the sum of the rising edge time (rising gradient time) and the peak holding time of the received signal, or the sum of the falling edge time (falling gradient time) and the minimum holding time, and the sum is the peak holding time or the minimum holding time of the original pulse signal, so that the peak value, the minimum value, the peak holding time and the minimum holding time of the original pulse signal can be restored, and the pulse signal can be accurately restored. In addition, the signal reduction method is performed on the signals received by the interface subjected to the temperature self-adaptive processing, so that the reduction accuracy is higher.

In a second aspect, the present application provides a temperature adaptive device, the device comprising: the configuration unit is used for configuring the parameters of the standby data transmission channel into first adaptive parameters when the external temperature of the interface does not reach a first temperature critical point of the rising trend if the external temperature of the interface is in the rising trend; the switching unit is used for switching a data transmission channel of the interface to the standby data transmission channel when the external temperature of the interface reaches the first temperature critical point if the external temperature of the interface is in an ascending trend; the configuration unit is further configured to configure the parameter of the standby data transmission channel as a second adaptive parameter when the external temperature of the interface does not reach a second temperature critical point of the descending trend if the external temperature of the interface is the descending trend; the switching unit is further configured to switch the data transmission channel of the interface to the standby data transmission channel when the external temperature of the interface reaches the second temperature critical point if the external temperature of the interface is in a descending trend.

The chip interface temperature self-adaptive device provided by the application configures the standby data transmission channel into the adaptive parameter in advance before the external temperature change of the interface reaches the temperature critical point of the temperature change trend according to the external temperature change trend of the interface when the external temperature of the interface changes, the adaptive parameter is adapted to the temperature after the external temperature of the interface reaches the temperature critical point, and switches the data transmission channel of the interface to the standby data transmission channel when the external temperature of the interface reaches the temperature critical point, because the adaptive parameter configured by the standby data transmission channel adapts to the external temperature of the current interface, the interface can keep stable and good performance under the external temperature of the current interface, the capability of the interface for coping with the temperature change is improved, the interface can meet the performance requirement in a wider temperature range, and is not limited by the difference of hardware among chips, thereby improving the consistency of the chip yield and the chip interface performance.

In a possible implementation manner, the apparatus further includes: the temperature acquisition unit is used for acquiring the external temperature of the interface; the calculation unit is used for calculating the difference value of the interface external temperature obtained in the last time minus the interface external temperature obtained in the previous time in the interface external temperatures obtained in the two adjacent times by the temperature acquisition unit; the trend determining unit is used for determining whether the calculated difference value is a positive number for k times continuously, and if yes, the external temperature of the interface is an ascending trend; and determining whether the calculated difference value is negative for t times continuously, if yes, the external temperature of the interface is in a descending trend; wherein k and t are preset positive integers.

If a plurality of temperature critical points exist, if the external temperature of the interface is in an ascending trend, the first temperature critical point is a preset temperature critical point which is greater than the external temperature of the current interface and is closest to the external temperature of the current interface; if the interface external temperature is in a descending trend, the second temperature critical point is a preset temperature critical point which is smaller than the current interface external temperature and is closest to the current interface external temperature.

The first adaptive parameter, the second adaptive parameter, the first temperature critical point and the second temperature critical point are obtained and stored through a chip sample test in advance. The first fitting parameter corresponds to the first temperature critical point and the upward trend, and the second fitting parameter corresponds to the second temperature critical point and the downward trend. The corresponding table of each adaptive parameter and each temperature critical point and the change trend (rising or falling) of the interface external temperature can be preserved in advance, and then the corresponding adaptive parameter is determined according to the change trend of the interface external temperature and the temperature critical point. If the external temperature of the interface is segmented in advance, and each temperature segment corresponds to one or more groups of adaptation parameters, the first adaptation parameters and the second adaptation parameters can be determined according to the change trend (rising or falling) of the external temperature of the interface and the current external temperature of the interface, that is, the temperature segment to be reached is determined according to the change trend of the external temperature of the interface and the current external temperature of the interface, and the adaptation parameters corresponding to the temperature segment are selected as the first adaptation parameters or the second adaptation parameters. If each temperature segment corresponds to multiple sets of adaptive parameters, one set of adaptive parameters can be randomly selected from the multiple sets of adaptive parameters for configuration.

In a possible implementation manner, the data transmission channel is a receiving channel of an interface, and the standby data transmission channel is a standby channel of the receiving channel, and the apparatus may further include: an amplitude detection unit, configured to detect an amplitude of a signal received by the data transmission channel or the spare data transmission channel; the calculating unit is used for calculating the difference value of subtracting the amplitude obtained at the previous time from the amplitude obtained at the next time in the amplitudes of the signals obtained at the two adjacent times; an ascending stage reduction unit to: if the difference value is greater than or equal to 0, accumulating the time count until the difference value is less than 0, and stopping the time count; if the time counting is stopped, the time counting value is smaller than a preset first threshold value, the time counting accumulation is continued, and the time counting is stopped until the difference value is smaller than 0; if the time counting is stopped, the time counting value is larger than or equal to the first threshold value, the time counting value is recorded, the time counting value is the sum of the rising edge time and the peak value holding time of the signal, the maximum amplitude value of the detected signal in the time counting accumulation process is recorded, and the time counting is cleared; a descent stage reduction unit to: if the difference value is less than or equal to 0, accumulating the time count until the difference value is greater than 0, and stopping the time count; if the time counting is stopped, the time counting value is smaller than a preset second threshold value, the time counting accumulation is continued, and the time counting is stopped until the difference value is larger than 0; if the time counting is stopped, the time counting value is larger than or equal to the second threshold value, the time counting value is recorded, the time counting value is the sum of the falling edge time and the minimum value holding time of the signal, the minimum amplitude of the detected signal in the time counting accumulation process is recorded, and the time counting is cleared; wherein the initial value of the time count is 0.

In this implementation, the peak value of the received signal recorded by the rising-stage restoring unit is the peak value of the original pulse signal, and the obtained time count value is the sum of the rising edge time (rising gradient time) and the peak holding time of the received signal, that is, the peak holding time of the original pulse signal. The minimum value of the received signal recorded by the falling recovery unit is the minimum value of the original pulse signal, the recorded time count value is the sum of the falling edge time (falling gradient time) and the minimum value holding time, and the minimum value holding time of the original pulse signal, so that the device can recover the peak value, the minimum value, the peak value holding time and the minimum value holding time of the original pulse signal, and accurately recover the pulse signal. In addition, the device performs reduction based on the signals received by the interface capable of performing temperature self-adaptation, so that the reduction accuracy is higher.

In a third aspect, the present application provides a chip, where the chip includes a processor and an interface, the processor is connected to the interface, and the interface includes a data transmission channel and a spare data transmission channel. The processor is configured to: if the external temperature of the interface is in an ascending trend, when the external temperature of the interface does not reach a first temperature critical point of the ascending trend, configuring parameters of a standby channel of a standby data transmission channel into first adaptive parameters; when the external temperature of the interface reaches the first temperature critical point, switching a data transmission channel of the interface to the standby data transmission channel; if the external temperature of the interface is in a descending trend, when the external temperature of the interface does not reach a second temperature critical point of the descending trend, configuring the parameters of the standby data transmission channel as second adaptive parameters; and if the external temperature of the interface reaches the second temperature critical point, switching a data transmission channel of the interface to the standby data transmission channel.

When the external temperature of the interface changes, according to the trend of the external temperature of the interface, the standby data transmission channel is configured into adaptive parameters in advance before the external temperature of the interface changes to reach a temperature critical point of the temperature change trend, the adaptive parameters are suitable for the temperature after the external temperature of the interface reaches the temperature critical point, when the external temperature of the interface reaches the temperature critical point, the data transmission channel is switched to the standby data transmission channel, and the adaptive parameters configured by the standby data transmission channel are suitable for the external temperature of the current interface, so that the interface of the chip has good temperature adaptability, the interface has strong capability of coping with temperature change, can meet performance requirements in a wider temperature range, and has high yield and consistent interface performance of the chip.

In one possible implementation, the processor is further specifically configured to: acquiring interface external temperature, and calculating the difference value of the interface external temperature obtained in the next time minus the interface external temperature obtained in the previous time in the interface external temperatures obtained in the two adjacent times; if the calculated difference value is a positive number for k times continuously, the external temperature of the interface is in an ascending trend; if the calculated difference value is negative for t times continuously, the external temperature of the interface is in a descending trend; wherein k and t are preset positive integers.

The first adaptive parameter, the second adaptive parameter, the first temperature critical point and the second temperature critical point are obtained and stored through a chip sample test in advance. The first fitting parameter corresponds to the temperature critical point and the upward trend, and the second fitting parameter corresponds to the temperature critical point and the downward trend. The corresponding table of each adaptive parameter and each temperature critical point and the interface external temperature variation trend (rising or falling) can be preserved in advance, and then the corresponding adaptive parameter is determined according to the interface external temperature variation trend and the temperature critical point of the temperature variation trend. If the external temperature of the interface is segmented in advance, and each temperature segment corresponds to one or more groups of adaptation parameters, the temperature segment to be reached can be determined according to the change trend (rising or falling) of the external temperature of the interface and the current external temperature of the interface, and the adaptation parameters corresponding to the temperature segment are selected as the first adaptation parameters or the second adaptation parameters. If each temperature segment corresponds to multiple sets of adaptive parameters, one set of adaptive parameters can be randomly selected from the multiple sets of adaptive parameters for configuration.

In a possible implementation manner, the data transmission channel is a receiving channel of an interface, the standby data transmission channel is a standby channel of the receiving channel, and the processor is further configured to: detecting the amplitude of the signal received by the data transmission channel or the spare data transmission channel, and calculating the difference value of the amplitude obtained in the last time minus the amplitude obtained in the previous time in the amplitudes of the signals obtained in the two adjacent times; if the difference value is greater than or equal to 0, accumulating the time count until the difference value is less than 0, and stopping the time count; if the time counting is stopped, the time counting value is smaller than a preset first threshold value, the time counting accumulation is continued, and the time counting is stopped until the difference value is smaller than 0; if the time counting is stopped, the time counting value is larger than or equal to the first threshold value, the time counting value is recorded, the time counting value is the sum of the rising edge time and the peak value holding time of the signal, the maximum amplitude value of the detected signal in the time counting accumulation process is recorded, and the time counting is cleared; if the difference value is less than or equal to 0, accumulating the time count until the difference value is greater than 0, and stopping the time count; if the time counting is stopped, the time counting value is smaller than a preset second threshold value, the time counting accumulation is continued, and the time counting is stopped until the difference value is larger than 0; if the time counting is stopped, the time counting value is larger than or equal to the second threshold value, the time counting value is recorded, the time counting value is the sum of the falling edge time and the minimum value holding time of the signal, the minimum amplitude of the detected signal in the time counting accumulation process is recorded, and the time counting is cleared; wherein the initial value of the time count is 0.

The interface of the chip can be adaptive to temperature, has stable and good performance, and the received signals are clearer and more accurate.

In the chip, the number of interfaces connected with the processor can be one, each interface comprises a data transmission channel and a standby data transmission channel, and the control and management functions of the processor on each interface are the same.

In a possible implementation manner, the chip may further include an amplitude detector and a time counter, the interface, the amplitude detector and the time counter are connected to the processor, the amplitude detector detects an amplitude of a signal received by the interface, and the processor reads the amplitude detected by the amplitude detector; the time counter counts time, and the processor controls the starting and stopping and clearing of the time counter, reads the time count value of the time counter and the like. The separation of the amplitude detector and the time counter from the processor may relieve the processor of stress. The amplitude detector and time counter may also be part of the processor.

In a fourth aspect, the present application provides an apparatus for data transmission, which includes the chip of the fourth aspect.

In a fifth aspect, the present application provides a computer-readable storage medium comprising instructions which, when executed on a computer, cause the computer to perform the method of the first aspect.

In a sixth aspect, the present application provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of the first aspect.

Drawings

Fig. 1 is a schematic structural diagram of a chip according to an embodiment of the present disclosure

FIG. 2 is a schematic diagram of another chip structure provided in the embodiments of the present application

Fig. 3 is a schematic structural diagram of another chip provided in the embodiment of the present application;

fig. 4 is a schematic flow chart of a temperature adaptive method according to an embodiment of the present disclosure;

fig. 5 is a block diagram of a temperature adaptive device according to an embodiment of the present disclosure;

FIG. 6 is a diagram illustrating an example of distortion of a received signal according to an embodiment of the present application;

fig. 7 is a schematic flowchart of a signal reduction method according to an embodiment of the present application;

fig. 8 is a schematic flow chart of another temperature adaptive method provided in the embodiments of the present application;

fig. 9 is a block diagram of a signal restoring apparatus according to an embodiment of the present application;

fig. 10 is a block diagram of another temperature adaptive device provided in an embodiment of the present application;

fig. 11 is a schematic structural diagram of another chip provided in the embodiment of the present application.

Detailed Description

The embodiment of the application provides a device for data transmission, which comprises one or more chips provided by the embodiment of the application. The chip provided by the embodiment of the present application, for example, as shown in fig. 1, includes an interface and a processor, where the interface is used to receive and send signals, and the processor is connected to the interface; the interface includes a data transmission channel for transmitting data. Specifically, the data transmission channel includes a transmission channel and a reception channel. The transmit channel may include a Pre-emphasis/De-emphasis (Pre-emphasis/De-emphasis) module and a transmit amplitude amplification (i.e., Analog Gain Control (AGC) module (AGC 1)), as well as a register coupled to the Pre-emphasis/De-emphasis module for configuring the Pre-emphasis/De-emphasis module (Pre-emphasis/De-emphasis module register), and a register coupled to the transmit amplitude amplification module for configuring the transmit amplitude amplification module (AGC1 register). The receive path may include a receive amplitude pre-amplification module (AGC2), a Continuous Time Linear Equalizer (CTLE) module, a receive amplitude post-amplification module (AGC3), and a Decision Feedback Equalizer (Decision Feedback Equalizer) module, as well as a register (AGC2 register) coupled to the receive amplitude pre-amplification module for configuring the receive amplitude pre-amplification module, a register (CTLE register) coupled to the Continuous Time Linear equalization module for configuring the Continuous Time Linear equalization module, a register (AGC3 register) coupled to the receive amplitude post-amplification module for configuring the receive amplitude post-amplification module, and a register (DFE register) coupled to the Decision Feedback equalization module for configuring the Decision Feedback equalization module. A processor, such as an MCU or an MPU, is connected to the above registers through a Management channel, such as a Management Information Structure (SMI) or a bus and interface standard (PCIE) Management channel, and is configured to manage and control parameter configurations of the transmission channel and the reception channel.

The data transmission channel provided in the embodiment of the present application is further configured with a standby data transmission channel. Specifically, a standby receiving channel may be configured only for a receiving channel in the data transmission channel, for example, as shown in fig. 1; or, a standby sending channel may be configured only for a sending channel in the data transmission channels, for example, as shown in fig. 2; it is also possible to configure a spare transmission channel for a transmission channel in the data transmission channel and a spare reception channel for a reception channel, for example, as shown in fig. 3.

The standby sending channel is a standby channel of the sending channel, the structure of the standby sending channel can be the same as that of the sending channel, and the standby sending channel can also be a channel which has a different structure from that of the sending channel but has completely consistent input, output and sending channels; the spare receiving channel is a spare channel of the receiving channel, the structure of the spare receiving channel can be the same as that of the receiving channel, and the spare receiving channel can also be a channel which has a structure different from that of the receiving channel but completely consistent with the input/output channel and the receiving channel.

The processor is also connected with the registers of the standby sending channel and the standby receiving channel through the management channel and is used for managing and controlling the parameter configuration of the standby sending channel and the standby receiving channel. The processor is further configured to perform switching between only the sending channel and the standby sending channel, or only the receiving channel and the standby receiving channel, or between the sending channel and the standby sending channel, and between the receiving channel and the standby receiving channel through the management channel, and specifically, the processor may perform switching between the channels by sending a switching instruction (for example, a disable instruction or an enable instruction) to registers of the sending channel and the standby sending channel, or sending a switching instruction (for example, a disable instruction or an enable instruction) to registers of the receiving channel and the standby receiving channel, for example, when the current receiving channel is in operation, sending a disable instruction to a register of the receiving channel, and sending an enable instruction to a register of the standby receiving channel, thereby performing switching between the receiving channel and the standby receiving channel.

It should be noted that the receiving channel and the standby receiving channel are standby channels, and the transmitting channel and the standby transmitting channel are standby channels. If the current receiving channel is working, the standby receiving channel is the standby channel of the receiving channel, if the current standby receiving channel is working, the receiving channel is the standby channel of the standby receiving channel, and the transmitting channel and the standby transmitting channel are also. When the receiving channel is used as a backup channel of the backup receiving channel, the original backup receiving channel may be called a receiving channel, and the original receiving channel may be called a backup receiving channel, and similarly, when the transmitting channel is used as a backup channel of the backup transmitting channel, the original backup transmitting channel may be called a transmitting channel, and the original transmitting channel may be called a backup transmitting channel.

The processor is also connected with a temperature sensor, the temperature sensor is used for detecting the external temperature of the interface, and the temperature sensor can belong to a chip, is a part of the chip and can be independent of the chip. The external temperature of the interface is the temperature around the interface when the interface is working.

It should be noted that in the chip provided in the embodiment of the present application, an interface may only include a receiving channel, and a standby receiving channel, that is, the interface only receives signals; or the interface only comprises a sending channel and an alternate sending channel, namely the interface only sends signals.

Before implementing the temperature self-adaptive method of the chip interface, a chip sample is tested to obtain adaptive parameters of the interface capable of keeping good performance under the condition of different external temperatures of the interface. For example, three interface external temperature segments (for convenience of description, referred to as temperature segments for short) may be pre-divided according to the actual working environment of the chip: the interface comprises a low-temperature section (10-18 ℃), a medium-temperature section (18-27 ℃) and a high-temperature section (27-36 ℃), and adaptive parameters, such as the low-temperature section adaptive parameters, the medium-temperature section adaptive parameters and the high-temperature section adaptive parameters, of which the interfaces can keep good performance in the three temperature sections are obtained through testing. Under the condition that only the standby receiving channel exists, the adaptation parameters (low-temperature segment adaptation parameters, medium-temperature segment adaptation parameters and high-temperature segment adaptation parameters) of each temperature segment only refer to the adaptation parameters of the receiving channel; under the condition that only a standby sending channel exists, the adaptation parameters of each temperature section only refer to the adaptation parameters of the sending channel; in the case of both the standby transmitting channel and the standby receiving channel, the adaptation layer parameters of each temperature segment refer to the adaptation parameters of the transmitting channel and the receiving channel. The adaptation parameters for each temperature segment may be one or more sets.

One or more temperatures in the temperature segment may be selected as temperature critical points, which may be selected based on the operating performance of the interface. When the external temperature of the interface is in an ascending trend and reaches a first temperature critical point of the ascending trend, or the external temperature of the interface is in a descending trend and reaches a second temperature critical point of the descending trend, the receiving channel and the standby receiving channel should be switched, or the sending channel and the standby sending channel should be switched, or the receiving channel and the standby receiving channel, and the sending channel and the standby sending channel should be switched at the same time. The first temperature critical point of the upward trend and the second temperature critical point of the downward trend may be the same value, for example, the three temperature segments are: the temperature of the low-temperature section (10-18 ℃), the temperature of the medium-temperature section (18-27 ℃) and the temperature of the high-temperature section (27-36 ℃) can be selected to be 18 ℃ and 27 ℃ as temperature critical points, when the external temperature of the interface is in the low-temperature section, the temperature change is in an increasing trend, the first temperature critical point is 18 ℃, and when the external temperature of the interface is in the medium-temperature section, the temperature change is in a decreasing trend, the second temperature critical point is not 18 ℃. After obtaining each temperature segment, the adaptive parameters of each temperature segment and one or more temperature critical points, storing the adaptive parameters and the one or more temperature critical points corresponding to each temperature segment and each temperature segment in a memory, if the processor is an MCU, storing the adaptive parameters and the one or more temperature critical points in the memory of the MCU, and if the processor does not have a memory, storing the adaptive parameters and the one or more temperature critical points in the memory connected to the processor.

Referring to fig. 4, a temperature adaptive method for enabling an interface of a chip to maintain good and stable performance at different temperatures is provided for embodiments of the present application. The method comprises the following steps:

step S401, the processor obtains the external temperature of the interface, and calculates the difference value of the external temperature of the interface obtained in the next time minus the external temperature of the interface obtained in the previous time in the external temperatures of the interfaces obtained in the two adjacent times;

step S402, judging whether the calculated difference is a positive number;

step S403, if yes, judging whether the calculated difference value is a positive number for k times continuously, and if yes, determining that the external temperature of the interface is in an ascending trend;

step S404, if the calculated difference value is a negative number, judging whether the calculated difference value is a negative number for t times continuously, if so, determining that the external temperature of the interface is in a descending trend;

k and t are positive integers, which can be preset according to the change speed of the external temperature of the interface and the rate of acquiring the external temperature of the interface, and k can be equal to t.

Specifically, the processor may read the temperature sensor and obtain the interface external temperature. The processor may periodically read the interface external temperature or read the interface external temperature at a preset rate. The processor can calculate the difference value of subtracting the adjacent last read interface external temperature from the read interface external temperature every time the interface external temperature is read, judge whether the difference value is a positive number, if so, the number of times that the difference value is the positive number is added by 1, and if the difference values obtained by continuous k times of calculation are all positive numbers, the interface external temperature is increased, and the interface external temperature is in an increasing trend. For example, k is equal to 5, the interface external temperature read for the nth time is denoted as T (n), T (n +1) -T (n) is calculated, if T (n +1) -T (n) is greater than 0, the number of times of the difference value being a positive number is added by 1, if T (n +1) -T (n), T (n +2) -T (n +1), T (n +3) -T (n +2), T (n +4) -T (n +3) and T (n +5) -T (n +4) are all positive numbers, namely the difference value is continuously positive numbers for 5 times, the interface external temperature is determined to be an ascending trend. If the difference value is not continuously positive for k times, clearing the times of the positive difference value when the negative difference value appears, and adding 1 to the times of the negative difference value.

Similarly, if the calculated difference is a negative number, the number of times that the difference is a negative number is increased by 1, and if the calculated difference is a negative number for t consecutive times, the external temperature of the interface is decreased, and the external temperature of the interface is in a decreasing trend. If the difference value is not negative for k times continuously, clearing the times of the difference value being negative when the difference value is positive, and adding 1 to the times of the difference value being positive.

If the calculated difference is neither k consecutive positive numbers nor t consecutive negative numbers, the external temperature of the interface may only temporarily fluctuate, neglecting these fluctuations, and not performing the subsequent steps.

The above calculation may be started from the start of the chip, and it should be noted that the sending channel and the receiving channel of the interface have been configured with default parameters in advance at the start.

Step S405, if the external temperature of the interface is in an ascending trend, judging whether the external temperature of the interface reaches a first temperature critical point of the ascending trend;

step S406, when the external temperature of the interface does not reach the first temperature threshold, configuring the parameter of the standby data transmission channel as a first adaptive parameter.

Step S407, when the external temperature of the interface reaches the first temperature critical point, switching the data transmission channel of the interface to the standby data transmission channel;

step S408, if the external temperature of the interface is in a descending trend, judging whether the external temperature of the interface reaches a second temperature critical point of the descending trend;

step S409, when the external temperature of the interface does not reach the second temperature critical point, configuring the parameter of the standby data transmission channel as a second adaptive parameter.

Step S4010, when the external temperature of the interface reaches the second critical temperature point, switching a data transmission channel of the interface to the standby data transmission channel.

The data transmission channel can be a receiving channel, and correspondingly, the standby data transmission channel is a standby receiving channel; or the data transmission channel is a sending channel, and correspondingly the standby data transmission channel is a standby sending channel; or the data transmission channel is a receiving channel and a sending channel, and correspondingly the standby data transmission channel is a standby receiving channel and a standby sending channel.

The first temperature critical point, the second temperature critical point, the first adaptive parameter and the second adaptive parameter are preset.

Specifically, if the external temperature of the interface does not reach the preset first temperature critical point of the upward trend or the preset second temperature critical point of the downward trend, the processor configures the parameters of the standby transmitting channel and/or the standby receiving channel as preset adaptation parameters, specifically, if the external temperature of the interface does not reach the first temperature critical point, configures the parameters of the standby transmitting channel and/or the standby receiving channel as preset first adaptation parameters or if the external temperature of the interface does not reach the preset second temperature critical point of the downward trend, configures the parameters of the standby transmitting channel and/or the standby receiving channel as preset second adaptation parameters, and continuously determines whether the external temperature of the interface reaches the first temperature critical point or the second temperature critical point;

if the external temperature of the interface reaches the first temperature critical point or the second temperature critical point, switching the current sending channel to a standby sending channel of the current sending channel; or switching the current sending channel to a standby sending channel of the current sending channel; or switching the current receiving channel to the standby receiving channel of the current receiving channel and switching the current sending channel to the standby sending channel of the current sending channel.

If the interface external temperature is in an ascending trend, if a plurality of temperature critical points exist, the first temperature critical point is a preset temperature critical point which is greater than the current interface external temperature and is closest to the current interface external temperature; if the interface external temperature is in a descending trend, the second temperature critical point is a preset temperature critical point which is smaller than the current interface external temperature and is closest to the current interface external temperature. For example, the three temperature stages are: the temperature of the interface is 18 ℃ or 27 ℃ or 18 ℃ or more, and if the external temperature of the interface is in an increasing trend, the current external temperature of the interface is 17 ℃ or more and the critical temperature closest to the current external temperature of the interface is 18 ℃ or less, the first critical temperature of the increasing trend is 18 ℃; if the external temperature of the interface is in an ascending trend, and the current external temperature of the interface is 25 ℃, the first temperature critical point of the ascending trend is 27 ℃. Similarly, if the external temperature of the interface is in a descending trend, and the current external temperature of the interface is 30 ℃, the temperature critical point which is lower than the current external temperature of the interface and is closest to the current external temperature of the interface is 27 ℃, and the second temperature critical point in the descending trend is 27 ℃; if the external temperature of the interface is a descending trend, and the current external temperature of the interface is 21 ℃, the second temperature critical point of the descending trend is 18 ℃.

If the external temperature of the interface is in an ascending trend or a descending trend and does not reach a first temperature critical point of the ascending trend, configuring the parameters of the standby sending channel or the standby receiving channel as preset first adaptive parameters in advance, or configuring the parameters of the standby sending channel and the standby receiving channel as preset first adaptive parameters; or the external temperature of the interface does not reach the second temperature critical point of the descending trend, the parameters of the standby sending channel or the standby receiving channel are configured as preset second adaptive parameters in advance, or the parameters of the standby sending channel and the standby receiving channel are configured as the preset second adaptive parameters. The standby sending channel is a standby channel of a current sending channel, the standby receiving channel is a standby channel of a current receiving channel, the current sending channel is a currently working sending channel, and the current receiving channel is a currently working receiving channel.

Wherein the fitting parameters (including the first fitting parameter and the second fitting parameter) may correspond to a temperature critical point (including the first temperature critical point and the second temperature critical point) and a temperature variation trend (an upward trend or a downward trend). A corresponding table of each adaptive parameter and each temperature critical point and the trend (rising or falling) of the external temperature of the interface may be pre-stored, for example, three temperature sections are: low temperature section (10-18 ℃), medium temperature section (18-27 ℃) and high temperature section (27-36 ℃), 18 ℃ and 27 ℃ are temperature critical points: if the change trend of the external temperature of the interface is an ascending trend, and the first temperature critical point is 18 ℃, selecting a middle-temperature section adaptation parameter N2 (namely, the ascending trend in the corresponding table and the middle-temperature section adaptation parameter corresponding to 18 ℃) by the first adaptation parameter; the change trend of the external temperature of the interface is an ascending trend, the second temperature critical point is 27 ℃, and then the first adaptive parameter selects the high-temperature section adaptive parameter N3 (namely the ascending trend in the corresponding table and the high-temperature section adaptive parameter corresponding to 27 ℃); the critical temperature point is 27 ℃, the change trend of the external temperature of the interface is a descending trend, and the second adaptive parameter selects the intermediate temperature section adaptive parameter N2 (namely, the descending trend in the corresponding table, the intermediate temperature section adaptive parameter corresponding to 27 ℃); the critical temperature point is 18 ℃, the external temperature variation trend of the interface is a descending trend, and the second adaptive parameter selects the low-temperature section adaptive parameter N1 (namely, the descending trend in the corresponding table, the 18 ℃ corresponding low-temperature section adaptive parameter). Wherein N1, N2 and N3 are adaptation parameter identifications.

If the external temperature of the interface is segmented in advance, and each external temperature segment (referred to as a temperature segment for short) of the interface corresponds to one or more sets of adaptation parameters, the first adaptation parameter and the second adaptation parameter can also be determined according to the variation trend (rising or falling) of the external temperature of the interface and the current external temperature of the interface. For example, according to the change trend, selecting an adaptation parameter corresponding to an adjacent temperature section of a temperature section where the external temperature of the current interface is located as a first adaptation parameter or a second adaptation parameter, if the external interface temperature is in an increasing trend, the temperature of the adjacent temperature section is greater than the temperature of the temperature section where the external temperature of the current interface is located; and if the temperature of the external interface is in a descending trend, the temperature of the adjacent temperature section is lower than that of the temperature section where the external temperature of the current interface is located. For example, the three temperature sections are a low temperature section (10-18 ℃), a medium temperature section (18-27 ℃) and a high temperature section (27-36 ℃), which respectively correspond to the low temperature section adaptation parameter, the medium temperature section adaptation parameter and the high temperature section adaptation parameter. The interface external temperature is in an ascending trend, and the current interface external temperature belongs to a low-temperature section, and then the first adaptive parameter selects an intermediate-temperature section adaptive parameter; if the external temperature of the interface is in an ascending trend, and the current external temperature of the interface belongs to a middle temperature section, selecting a high temperature section adaptation parameter from the first adaptation parameter; if the external temperature of the interface is in a descending trend and the current external temperature of the interface belongs to a high-temperature section, selecting a middle-temperature section adaptation parameter by the second adaptation parameter; and if the external temperature of the interface is in a descending trend and the current external temperature of the interface belongs to the middle temperature section, selecting the low-temperature section adaptation parameter from the second adaptation parameter. If each temperature segment corresponds to multiple sets of adaptive parameters, one set of adaptive parameters can be randomly selected from the multiple sets of adaptive parameters for configuration.

If the external temperature of the interface reaches a temperature critical point (a first temperature critical point with an ascending trend or a second temperature critical point with a descending trend), the current sending channel is switched to a standby sending channel of the current sending channel (only the standby sending channel is available), or the current receiving channel is switched to a standby receiving channel of the current receiving channel (only the standby receiving channel is available), or the current sending channel and the current receiving channel are switched to respective standby channels (both the standby sending channel and the standby receiving channel are available). Therefore, the chip always uses the data transmission channel configured with the adaptive parameters to send and/or receive signals, the adaptive parameters are adapted to the temperature after the external temperature of the interface reaches the temperature critical point, and the data transmission channel can better adapt to the current temperature, so that the temperature self-adaptation of the interface is realized, and the stable and good performance of the interface is kept. Compared with the method that the standby channel is only arranged on the sending channel or the receiving channel, the temperature self-adaption capability of the interface can be better improved.

The chip interface temperature self-adaptive scheme provided by the application is characterized in that a standby channel is arranged for a sending channel and/or a receiving channel, when the external temperature of an interface changes, according to the trend of the external temperature of the interface, when the external temperature of the interface does not reach the temperature critical point of the temperature change trend, the standby channel is configured into an adaptive parameter in advance, the adaptive parameter is adapted to the temperature after the external temperature of the interface reaches the temperature critical point, when the external temperature of the interface reaches the temperature critical point, the sending channel and/or the receiving channel are switched to the corresponding standby channel, and as the adaptive parameter configured by the standby channel is adapted to the external temperature of the current interface, the interface can keep stable and good performance at the external temperature of the current interface, so that the chip interface can be self-adaptive to the temperature, the capacity of the interface for coping with the temperature change is improved, and the interface can meet the performance requirement in a wider temperature range, and because the scheme is carried out in a mode of adjusting parameters by software and is not limited by the difference of hardware among chips, the chip yield and the consistency of the chip interface performance can be improved.

Referring to fig. 5, an embodiment of the present application further provides a temperature adaptive device, where the device includes:

the temperature acquisition unit U501 is used for acquiring the external temperature of the interface;

the calculating unit U502 is configured to calculate a difference value between the interface external temperature obtained in the next time and the interface external temperature obtained in the previous time, in the interface external temperatures obtained in the two adjacent times;

a trend determining unit U503, configured to determine whether the calculated difference is a positive number k times in succession, and if yes, the interface external temperature is an increasing trend; and determining whether the calculated difference value is negative for t times continuously, if yes, the external temperature of the interface is in a descending trend; where k and t are preset.

The temperature acquisition unit can be connected with the temperature sensor, and reads the temperature value of the temperature sensor, so as to acquire the external temperature of the interface. Every time the temperature obtaining unit reads the external temperature of the interface, the calculating unit calculates the difference between the external temperature of the interface read this time and the external temperature of the interface read last time, the trend determining unit judges whether the difference is a positive number, if yes, the number of times that the difference is a positive number is added with 1, if the difference obtained by continuous k times of calculation is a positive number, the external temperature of the interface is in an increasing trend, and the determination of the decreasing trend is also carried out.

A configuration unit U504, configured to configure, if the interface external temperature is in an ascending trend, a parameter of a standby sending channel and/or a standby receiving channel as a preset first adaptive parameter when the interface external temperature does not reach a preset first temperature critical point of the ascending trend, where the standby sending channel is a standby channel of a current sending channel, and the standby receiving channel is a standby channel of the current receiving channel;

a switching unit U505, configured to switch the current sending channel to the standby sending channel and/or switch the current receiving channel to the standby receiving channel when the interface external temperature reaches the first temperature critical point if the interface external temperature is in an increasing trend;

the configuration unit U504 is further configured to, if the interface external temperature is a downward trend, configure the parameter of the standby transmitting channel and/or the standby receiving channel as a preset second adaptive parameter when the interface external temperature does not reach a preset second temperature critical point of the downward trend;

the switching unit U505 is further configured to: if the external temperature of the interface is in a descending trend, when the external temperature of the interface reaches the second temperature critical point, the current sending channel is switched to the standby sending channel, and/or the current receiving channel is switched to the standby receiving channel.

If a plurality of temperature critical points exist, if the external temperature of the interface is in an ascending trend, the first temperature critical point is a preset temperature critical point which is greater than the external temperature of the current interface and is closest to the external temperature of the current interface; if the external temperature of the interface is in a descending trend, the second temperature critical point is a preset temperature critical point which is smaller than the external temperature of the current interface and is closest to the external temperature of the current interface.

The current sending channel is a currently working sending channel, and the current receiving channel is a currently working receiving channel. If the external temperature of the interface is in an ascending trend and does not reach a first temperature critical point of the ascending trend, the configuration unit configures the parameter of the standby sending channel as a preset first adaptation parameter in advance, or configures the parameter of the standby receiving channel as a preset first adaptation parameter, or configures the parameters of the standby sending channel and the standby receiving channel as preset first adaptation parameters; if the external temperature of the interface is a descending trend and does not reach a second temperature critical point of the descending trend, the configuration unit configures the parameter of the standby sending channel as a preset second adaptation parameter in advance, or configures the parameter of the standby receiving channel as a preset second adaptation parameter, or configures the parameters of the standby sending channel and the standby receiving channel as preset second adaptation parameters.

Wherein, the fitting parameters (including the first fitting parameter and the second fitting parameter) may correspond to the temperature critical point (including the first temperature critical point and the second temperature critical point) and the temperature variation trend (ascending trend or descending trend). The corresponding table of each adaptive parameter and each temperature critical point and the interface external temperature variation trend (ascending or descending) can be preserved in advance, and then the configuration unit determines the corresponding adaptive parameter according to the interface external temperature variation trend and the temperature critical point of the temperature variation trend, for example, the three temperature sections are a low temperature section (10-18 ℃), a medium temperature section (18-27 ℃) and a high temperature section (27-36 ℃), and the corresponding low temperature section adaptive parameter, medium temperature section adaptive parameter and high temperature section adaptive parameter. The change trend of the external temperature of the interface is an ascending trend, the first temperature critical point is 18 ℃, the first adaptive parameter is a middle-temperature section adaptive parameter, the change trend of the external temperature of the interface is a descending trend, the second temperature critical point is 18 ℃, and the second adaptive parameter is a low-temperature section adaptive parameter. If the external temperature of the interface is segmented in advance, and each temperature segment corresponds to one or more groups of adaptation parameters, the configuration unit may determine a first adaptation parameter or a second adaptation parameter according to a change trend (rising or falling) of the external temperature of the interface and the current external temperature of the interface, for example, if the external temperature of the interface is a rising trend, the current external temperature of the interface belongs to a low temperature segment, the first adaptation parameter is an adaptation parameter of a medium temperature segment, and if the external temperature of the interface is a falling trend, the current external temperature of the interface belongs to the medium temperature segment, the second adaptation parameter is an adaptation parameter of the low temperature segment. If each temperature segment corresponds to multiple sets of adaptive parameters, one set of adaptive parameters can be randomly selected from the multiple sets of adaptive parameters for configuration.

If the external temperature of the interface reaches a temperature critical point (a first temperature critical point with an ascending trend or a second temperature critical point with a descending trend), the switching unit switches the current sending channel to a standby sending channel of the current sending channel (only the standby sending channel is available), or switches the current receiving channel to a standby receiving channel of the current receiving channel (only the standby receiving channel is available), or switches both the current sending channel and the current receiving channel to respective standby channels (both the standby sending channel and the receiving channel are available). The interface channel configured with the adaptive parameters can better adapt to the current temperature, so that the temperature adaptation of the interface can be realized, and the stable and good performance of the interface is kept.

The application provides a chip interface temperature self-adaptation device, when interface external temperature changes, according to the trend of interface external temperature change, before interface external temperature reaches the temperature critical point of temperature change trend, configure the standby channel into adaptation parameter in advance, when interface external temperature reaches the temperature critical point, switch the transmitting channel and/or receiving channel to the corresponding standby channel, because the adaptation parameter that standby channel configured is adapted to current interface external temperature, therefore the interface can keep good and stable performance under current interface external temperature, improve the ability of interface to cope with temperature change, make the interface can satisfy the performance requirement in the broad temperature range, and do not be subject to the difference of hardware between the chips, thereby improve the chip yield and the uniformity of chip interface performance.

The embodiment of the present application further provides a chip, where the chip includes a processor and an interface, where the processor is connected to the interface, and as shown in fig. 1, fig. 2, or fig. 3, the interface includes a sending channel, a receiving channel, and a standby sending channel and/or a standby receiving channel, where the standby sending channel and the sending channel are standby channels, and the standby receiving channel and the receiving channel are standby channels; the processor is configured to perform the method as shown in fig. 4.

The processor is connected with the registers of the sending channel, the receiving channel, the standby sending channel and the standby receiving channel through the management channel and is used for managing and controlling parameter configuration of the sending channel, the receiving channel, the standby sending channel and the standby receiving channel. The structure of the standby sending channel can be the same as that of the sending channel, and the standby sending channel can also be a channel which has a different structure from that of the sending channel but has completely consistent input, output and sending channels; the structure of the spare receiving channel can be the same as that of the receiving channel, and the spare receiving channel can also be a channel which is different from the receiving channel in structure but identical in input, output and receiving channels.

The chip provided by the embodiment of the application, when the interface external temperature changes, according to the trend of the interface external temperature change, before the interface external temperature reaches the temperature critical point of the temperature change trend, the standby channel is configured to the adaptive parameter in advance, when the interface external temperature reaches the temperature critical point, the sending channel and/or the receiving channel are/is switched to the corresponding standby channel, because the adaptive parameter configured by the standby channel is adapted to the current interface external temperature, the interface of the chip has good temperature adaptability, the interface has strong capability of coping with the temperature change, the performance requirement can be met in a wide temperature range, the chip yield is high, and the chip interface performance has consistency.

After the chip interface receives the signal, there often exists a certain distortion, and the signal is not a standard waveform, for example, as shown in fig. 6, the left side is the transmitted signal, and the right side is the received signal, the transmitted signal is originally a pulse signal, but the received signal has obvious rising and falling slopes.

Through the temperature self-adaptation scheme that this application embodiment provided, chip interface can keep good stable performance under different temperatures to improve the accuracy of received signal, be favorable to further reducing the received signal like this, improve the degree of accuracy of signal reduction. Based on the chip interface temperature self-adaptive scheme provided by the embodiment of the application, the embodiment of the application also provides a signal restoration method, and the method further restores the pulse signal received by the interface, restores the received signal to the original waveform and ensures the accuracy of the received signal. As shown in fig. 7, the method includes:

step S701, detecting the amplitude of the signal received by the interface, and calculating a difference between the amplitude obtained at the next time and the amplitude obtained at the previous time in the amplitudes of the signals obtained at the two adjacent times.

Specifically, the amplitude of a signal received by a receiving channel of the interface is detected.

Step S702, judging whether the difference value is greater than or equal to 0;

step S703, if the difference value is greater than or equal to 0, accumulating the time count until the difference value is less than 0, and stopping the time count;

step S704, determining whether the time count value is smaller than a preset first threshold value when the time count is stopped;

step S705, if the time counting is stopped, if the time counting value is smaller than a preset first threshold value, continuing to perform time counting accumulation until the difference value is smaller than 0, stopping the time counting, and returning to step S604 to continuously determine whether the time counting value is smaller than the first threshold value;

step S706, if the time counting is stopped, the time counting value is greater than or equal to the first threshold value, the time counting value is recorded, the time counting value is the sum of the rising edge time and the peak holding time of the signal, the maximum amplitude of the signal detected in the time counting accumulation process is recorded, the time counting is cleared, the step S601 is returned, and the signal receiving, calculating and restoring of the next stage are continued;

step S707, if the difference value is less than 0, accumulating the time count until the difference value is greater than 0, and stopping the time count;

step 708, judging whether the time count value is smaller than a preset second threshold value when the time count is stopped;

step S709, if the time count is stopped and the time count value is smaller than a preset second threshold, continuing to perform time count accumulation until the difference value is greater than 0, stopping time count, returning to step S608, and continuing to determine whether the time count value is smaller than the second threshold;

step S7010, if time counting is stopped, the time counting value is greater than or equal to the second threshold value, the time counting value is recorded, the time counting value is the sum of the falling edge time and the minimum value holding time of the signal, the minimum amplitude of the signal detected in the time counting accumulation process is recorded, the time counting is cleared, the step S601 is returned, and signal receiving, calculation and restoration in the next stage are continued;

wherein the initial value of the time count is 0; the first threshold value and the second threshold value can be obtained through simulation according to various factors such as the line rate of a chip interface, a plate used by a chip, the length of a routing and the like.

According to the method, the peak value and the minimum value of the received signal can be obtained, the obtained time count value is the sum of the rising edge time (rising gradient time) and the peak holding time of the received signal, or the sum of the falling edge time (falling gradient time) and the minimum holding time, and the sum is the peak holding time or the minimum holding time of the original pulse signal, so that the peak value, the minimum value, the peak holding time and the minimum holding time of the original pulse signal can be restored, and the pulse signal can be accurately restored. In addition, the signal restoration method provided by the embodiment of the application is performed on the signal received by the interface subjected to the temperature adaptive processing, so that the restoration accuracy is higher.

The embodiment of the present application further provides another temperature adaptive method, where the method includes steps S401 to S4010, and steps S701 to S7010, and step S701 is executed after step S407 or S4010, as shown in fig. 8. The method restores the signals received by the receiving channel subjected to the temperature self-adaptive processing, and the received signals of the receiving channel subjected to the temperature self-adaptive processing have high accuracy, so that the method is more favorable for restoring the received signals, and the restoring accuracy of the received signals is improved.

An embodiment of the present application further provides a signal restoring apparatus, as shown in fig. 9, the apparatus includes:

an amplitude detection unit U901, configured to detect an amplitude of a signal received by an interface, specifically, detect an amplitude of a signal received by a receiving channel of the interface;

the calculating unit U902 is configured to calculate a difference value between an amplitude obtained at the next time and an amplitude obtained at the previous time in amplitudes of signals obtained at two adjacent times;

a rising-stage reduction unit U903 for:

if the difference value is greater than or equal to 0, accumulating the time count until the difference value is less than 0, and stopping the time count;

if the time counting is stopped, the time counting value is smaller than a preset first threshold value, the time counting accumulation is continued, and the time counting is stopped until the difference value is smaller than 0;

if the time counting is stopped, the time counting value is larger than or equal to the first threshold value, the time counting value is recorded, the time counting value is the sum of the rising edge time and the peak value holding time of the signal, the maximum amplitude value of the detected signal in the time counting accumulation process is recorded, and the time counting is cleared;

a descending stage restoring unit U904 for:

if the difference value is less than or equal to 0, accumulating the time count until the difference value is greater than 0, and stopping the time count;

if the time counting is stopped, the time counting value is smaller than a preset second threshold value, the time counting accumulation is continued, and the time counting is stopped until the difference value is larger than 0;

if the time counting is stopped, the time counting value is larger than or equal to the second threshold value, the time counting value is recorded, the time counting value is the sum of the rising edge time and the minimum value holding time of the signal, the minimum amplitude of the signal detected in the time counting accumulation process is recorded, and the time counting is cleared;

the initial value of the time count is 0, and the first threshold value and the second threshold value can be obtained by simulation according to various factors such as the line rate of the chip interface, the plate used by the chip, the length of the routing and the like. The peak value of the received signal recorded by the rising-stage restoring unit is the peak value of the original pulse signal, and the obtained time count value is the sum of the rising edge time (rising gradient time) and the peak holding time of the received signal, namely the peak holding time of the original pulse signal. The minimum value of the received signal recorded by the falling recovery unit is the minimum value of the original pulse signal, the recorded time count value is the sum of the falling edge time (falling gradient time) and the minimum value holding time, and the minimum value holding time of the original pulse signal, so that the device can recover the peak value, the minimum value, the peak value holding time and the minimum value holding time of the original pulse signal, and accurately recover the pulse signal. In addition, the device performs reduction based on the signals received by the interface capable of performing temperature self-adaptation, so that the reduction accuracy is higher.

An embodiment of the present application further provides another temperature adaptive apparatus, where the apparatus includes the apparatus shown in fig. 5 and the apparatus shown in fig. 9, and as shown in fig. 10, the amplitude detection unit is connected to the switching unit, determines whether a received signal is a receiving channel or a standby receiving channel according to a switching operation of the switching unit, and detects an amplitude of a signal received by the receiving channel or the standby receiving channel. In the device, the device shown in fig. 5 may not be connected to the device shown in fig. 9, and the amplitude detection unit directly detects the receiving channel and the standby receiving channel at the same time, because one of the receiving channel and the standby receiving channel receives a signal, the amplitude detection unit only needs to detect the received signal, and does not need to judge whether the signal is from the receiving channel or the standby receiving channel. The device carries out temperature self-adaptation to the interface to the signal that the receiving channel that has passed through temperature self-adaptation processing received restores, because the receiving channel that has passed through temperature self-adaptation processing the received signal degree of accuracy is high, more is favorable to the restoration of received signal, consequently the device is higher to the degree of restoration of received signal.

The embodiment of the present application further provides a chip based on the chip shown in fig. 1, fig. 2, or fig. 3, where the chip includes an interface and a processor, and may further include an amplitude detector and a time counter, as shown in fig. 11 (taking the chip shown in fig. 3 as an example), the interface, the amplitude detector, and the time counter are connected to the processor, the amplitude detector is configured to detect an amplitude of a signal received by the interface and is connected to the interface, and specifically, the amplitude detector may be connected to a receiving channel and a standby receiving channel. The processor controls the starting and stopping of the time counter, clears the time counter, reads the time count value of the time counter and the like. The processor reads the amplitude detected by the amplitude detector in real time and is used for:

calculating the difference value of subtracting the amplitude obtained in the previous time from the amplitude obtained in the next time in the amplitudes of the signals obtained in the two adjacent times;

if the difference value is greater than or equal to 0, controlling a time counter to count and accumulate time until the difference value is less than 0, and stopping the time counter;

if the time counter is stopped, the time count value is smaller than a preset first threshold value, the time counter is controlled to continue counting and accumulating time until the difference value is smaller than 0, and the time counter is stopped;

if the time counter is stopped, the time count value is larger than or equal to the first threshold value, the time count value is recorded, the time count value is the sum of the rising edge time and the peak holding time of the signal, the maximum amplitude of the signal detected by the amplitude detector in the time count accumulation process is recorded, and the time counter is reset;

if the difference value is less than or equal to 0, controlling a time counter to count and accumulate time until the difference value is greater than 0, and stopping the time counter;

if the time counter is stopped, the time count value is smaller than a preset second threshold value, the time counter is controlled to continue counting and accumulating time until the difference value is larger than 0, and the time counter is stopped;

if the time counter is stopped, the time count value is greater than or equal to the second threshold value, the time count value is recorded, the time count value is the sum of the falling edge time and the minimum value holding time of the signal, the minimum amplitude of the signal detected by the amplitude detector in the time count accumulation process is recorded, and the time counter is cleared;

the initial value of the time count is 0, and the first threshold value and the second threshold value can be obtained by simulation according to various factors such as the line rate of the chip interface, the plate used by the chip, the length of the routing and the like. The amplitude detector and time counter may also be part of the processor.

The chip that this application embodiment provided, chip interface can carry out temperature self-adaptation, has stable good performance, and the signal that receives is more clear accurate, based on such chip interface, further restores the signal that chip interface received to can more accurately restore the former pulse signal of sending.

An apparatus for data transmission is provided in an embodiment of the present application, where the apparatus includes one or more chips provided in the embodiment of the present application, and may include one or more chips shown in fig. 1, fig. 2, fig. 3, or fig. 11, or a combination of any two, three, or four of the chips shown in fig. 1, fig. 2, fig. 3, and fig. 11, for example.

Embodiments of the present application also provide a computer-readable storage medium including instructions that, when executed on a computer, cause the computer to perform the method illustrated in fig. 4, 7, or 8.

Embodiments of the present application also provide a computer program product containing instructions which, when run on a computer, cause the computer to perform the method shown in fig. 4, 7 or 8.

Claims

1. A method of temperature adaptation, comprising:

acquiring interface external temperature, and calculating the difference value of the interface external temperature obtained in the next time minus the interface external temperature obtained in the previous time in the interface external temperatures obtained in the two adjacent times;

if the calculated difference value is a positive number for k times continuously, the external temperature of the interface is in an ascending trend; if the calculated difference value is negative for t times continuously, the external temperature of the interface is in a descending trend; wherein k and t are preset positive integers;

if the external temperature of the interface is in the rising trend, when the external temperature of the interface does not reach a first temperature critical point of the rising trend, configuring parameters of a standby data transmission channel into first adaptive parameters; when the external temperature of the interface reaches the first temperature critical point, switching a data transmission channel of the interface to the standby data transmission channel;

if the external temperature of the interface is in the descending trend, when the external temperature of the interface does not reach a second temperature critical point of the descending trend, configuring the parameters of the standby data transmission channel as second adaptive parameters; and when the external temperature of the interface reaches the second temperature critical point, switching the data transmission channel of the interface to the standby data transmission channel.

2. The method of claim 1,

if the interface external temperature is in an ascending trend, the first temperature critical point is greater than the current interface external temperature and is the temperature critical point which is closest to the current interface external temperature in the plurality of temperature critical points;

if the interface external temperature is in a descending trend, the second temperature critical point is smaller than the current interface external temperature and is the temperature critical point which is closest to the current interface external temperature in the plurality of temperature critical points.

3. The method of claim 1 or 2, wherein the data transmission channel is a receive channel of an interface and the backup data transmission channel is a backup channel of the receive channel, the method further comprising:

detecting the amplitude of the signal received by the data transmission channel or the spare data transmission channel, and calculating the difference value of the amplitude obtained in the last time minus the amplitude obtained in the previous time in the amplitudes of the signals obtained in the two adjacent times;

if the time counting is stopped, the time counting value is smaller than a first threshold value, the time counting accumulation is continued, and the time counting is stopped until the difference value is smaller than 0;

if the time counting is stopped, the time counting value is smaller than the second threshold value, the time counting accumulation is continued, and the time counting is stopped until the difference value is larger than 0;

if the time counting is stopped, the time counting value is larger than or equal to the second threshold value, the time counting value is recorded, the time counting value is the sum of the falling edge time and the minimum value holding time of the signal, the minimum amplitude of the detected signal in the time counting accumulation process is recorded, and the time counting is cleared;

wherein the initial value of the time count is 0.

4. The method of claim 1 or 2,

the data transmission channel and the spare data transmission channel have the same structure.

5. A temperature adaptive device, comprising:

the temperature acquisition unit is used for acquiring the external temperature of the interface;

the calculation unit is used for calculating the difference value of the interface external temperature obtained in the last time minus the interface external temperature obtained in the previous time in the interface external temperatures obtained in the two adjacent times by the temperature acquisition unit;

the trend determining unit is used for determining whether the calculated difference value is a positive number for k times continuously, and if yes, the external temperature of the interface is an ascending trend; and determining whether the calculated difference value is negative for t times continuously, if yes, the external temperature of the interface is in a descending trend; wherein k and t are preset positive integers;

the configuration unit is used for configuring the parameters of the standby data transmission channel into first adaptive parameters when the external temperature of the interface does not reach a first temperature critical point of the rising trend if the external temperature of the interface is in the rising trend;

the switching unit is used for switching a data transmission channel of the interface to the standby data transmission channel when the external temperature of the interface reaches the first temperature critical point if the external temperature of the interface is in an ascending trend;

the configuration unit is further configured to configure the parameter of the standby data transmission channel as a second adaptive parameter if the external temperature of the interface is in a descending trend and if the external temperature of the interface does not reach a second temperature critical point of the descending trend;

the switching unit is further configured to switch the data transmission channel of the interface to the standby data transmission channel when the external temperature of the interface reaches the second temperature critical point if the external temperature of the interface is in a descending trend.

6. The apparatus of claim 5, wherein if the interface external temperature is increasing, the first temperature threshold is greater than a current interface external temperature and is a temperature threshold closest to the current interface external temperature among a plurality of temperature thresholds;

7. The apparatus of claim 5 or 6, wherein the data transmission channel is a receive channel of an interface, and the backup data transmission channel is a backup channel of the receive channel, the apparatus further comprising:

an amplitude detection unit, configured to detect an amplitude of a signal received by the data transmission channel or the spare data transmission channel;

the calculating unit is used for calculating the difference value of subtracting the amplitude obtained at the previous time from the amplitude obtained at the next time in the amplitudes of the signals obtained at the two adjacent times;

an ascending stage reduction unit to:

a descent stage reduction unit to:

wherein the initial value of the time count is 0.

8. An apparatus for data transmission, comprising a chip, the chip comprising a processor and an interface, the interface comprising a data transmission channel and a spare data transmission channel, the processor being configured to perform the method of any of claims 1 to 4.