TW201516692A - Data transmission system and operating method thereof - Google Patents

Abstract

A data transmission system and an operating method thereof are disclosed herein. The operating method includes: providing, through a first device, a latch signal to a second device; providing, through the first device, a stop signal to the second device at a first operating state; catching, through the second device, the stop signal according to the latch signal; executing, through the second device, a stop procedure of transmission of the second device after the stop signal is catch; returning back, through the second device, a finish signal of the stop procedure to the first device after the stop procedure of transmission of the second device is finished; stopping, through the first device, a transmission between the first device and the second device after the finish signal of the stop procedure is received.

Description

Data transmission system and its operation method

This case is about an electronic system and its operation method. In particular, it is a data transmission system and its operation method.

With the rapid development of electronic technology, various types of data transmission systems have been widely used in people's lives, such as inter-integrated circuits (I ² C), serial peripheral interfaces (serial peripheral interface). Bus, SPI bus), etc.

In a particular computer system (such as a server system), more than one programmable logic device (PLD) or complex programmable logic device (CPLD) is often used to implement specific functions. Since the general purpose I/O (GPIO) of these logic devices is limited, how to realize the data transmission system between these logic devices and make the data transmission system stable and reliable is the current urgent need solved problem.

One aspect of the present invention is a method of operating a data transmission system. According to an embodiment of the invention, the data transmission system includes a first device, a second device, and a shift bus. The first device and the second device are electrically connected to each other by the displacement bus bar. The method includes: providing, by the first device, a latch signal to the second device via the shift bus; and transmitting, by the first device, a shift bus through the first device in a first operating state Transmitting a stop signal to the second device; and transmitting, by the second device, the transmission stop signal according to the latch signal; after capturing the transmission stop signal, performing a second device by using the second device a transmission stop program; after the transmission stop program of the second device is completed, transmitting, by the second device, a stop completion signal to the first device via the shift bus; after receiving the stop completion signal, Data transmission with the second device is stopped by the first device.

Another aspect of the invention is a data transmission system. The data transmission system includes a first device, a second device, and a shift bus. The first device and the second device are electrically connected to each other by the displacement bus bar. The first device is configured to provide a latch signal to the second device via the shift bus. In a first operating state, the first device is further configured to provide a transmission stop signal to the second device via the shift bus. The second device is configured to retrieve the transmission stop signal according to the latch signal, and after performing the transmission stop signal, perform a transmission stop procedure of the second device, and use the same in the second device After the transmission stop procedure is completed, a stop completion signal is transmitted back to the first device via the shift bus. After receiving the stop completion signal, the first device stops with the second device Data transfer.

In summary, by applying the above embodiment, a data transmission system can be realized. Through the data transmission system, the first device and the second device can communicate with each other to perform a stop and start procedure of the data transmission system. In this way, errors in the lack of communication mechanism when the data transmission system 100 is stopped and started can be avoided, thereby improving the reliability and stability of the data transmission system 100.

100‧‧‧ data transmission system

110‧‧‧ first device

120‧‧‧second device

122‧‧‧Detection unit

124‧‧‧Stop/start unit

126‧‧‧State response unit

128‧‧‧Scratch unit

128a‧‧‧ Receiving temporary storage area

128b‧‧‧Transfer temporary storage area

129‧‧‧ buffer space

Clock‧‧‧clock signal line

Latch‧‧‧Latch signal line

D_in‧‧‧First data line

D_out‧‧‧second data line

Disable, Disable_ok‧‧‧ Signal

R[n]-R[0]‧‧‧ Receive Buffer

T[n]-T[0]‧‧‧ transmit buffer

S1-S6‧‧‧ steps

U1-U6‧‧‧ steps

400a‧‧‧ verification method

400b‧‧‧ verification method

1 is a schematic diagram of a data transmission system according to an embodiment of the invention; FIG. 2 is a schematic diagram of data transmitted by a shift bus according to an embodiment of the invention; A schematic diagram of a data receiving operation according to an embodiment of the present invention; FIG. 3b is a schematic diagram of a data transmission operation according to an embodiment of the invention; FIG. 4a is a diagram of data according to an embodiment of the invention. A flowchart of a method of operation of the transmission system; and FIG. 4b is a flowchart of a method of operation of the data transmission system according to an embodiment of the invention.

The spirit and scope of the present disclosure will be apparent from the following description of the preferred embodiments of the present disclosure. Modifications do not depart from the spirit and scope of the disclosure.

The terms used in this document, unless otherwise specified, generally have the usual meaning of each term used in the art, in the context of the disclosure, and in the particular content. Certain terms used to describe the disclosure are discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in the description of the disclosure.

The use of the terms "first", "second", ", etc." as used herein does not specifically mean the order or the order, and is not intended to limit the present invention. It is merely to distinguish between elements or operations described in the same technical terms.

The terms "including", "including", "having", etc., as used in this document are all open terms, meaning, including but not limited to.

"Electrical connection" or "coupling" as used herein may mean that two or more elements are in direct physical or electrical contact with each other, or indirectly for physical or electrical contact, and "electrical connection" Or "coupled" may also mean that two or more elements operate or interact with each other.

An embodiment of the invention is a data transmission system. Also refer to Figures 1 to 3b. FIG. 1 is a schematic diagram of a data transmission system 100 according to an embodiment of the invention. FIG. 2 is a schematic diagram of data transmitted by a shift bus according to an embodiment of the invention. FIG. 3a is a schematic diagram of a data receiving operation according to an embodiment of the invention. FIG. 3b is a data transfer operation according to an embodiment of the invention. Schematic diagram.

Referring to FIG. 1 in particular, in the present embodiment, the data transmission system 100 can include a first device 110, a second device 120, and a shifty bus 130. In this embodiment, the displacement bus bar 130 is electrically connected between the first device 110 and the second device 120, that is, the first device 110 and the second device 120 are electrically connected to each other by the displacement bus bar 130. connection.

In this embodiment, the first device 110 and the second device 120 can be implemented by logic devices such as a programmable logic device (PLD) or a field-programmable gate array (FPGA). The shift bus 130 can be implemented with a plurality of signal lines.

In this embodiment, the shift bus bar 130 can include a clock signal line Clock, a latch signal line Latch, a first data line D_in, and a second data line D_out. The clock signal line Clock, the latch signal line Latch, the first data line D_in, and the second data line D_out are different from each other. In addition, in this embodiment, the transmission data widths of the clock signal line Clock, the latch signal line Latch, the first data line D_in, and the second data line D_out are all 1 bit.

It is noted that the setting of the signal/data line in the shift bus 130 is not limited to the above embodiment, and any signal/data line setting sufficient for the data transmission system 100 to implement the following technical contents can be applied. In the present invention. For example, in an embodiment, the shift bus 130 may not include the clock signal line Clock, and the first device 110 and the second device 120 may respectively receive the clock signal from the system.

Referring to FIG. 2 in particular, in the embodiment, the first device 110 is configured to provide a clock signal to the second device 120 via the clock signal line Clock in the shift bus 130, and is used to pass through the shift bus 130. The latch signal line Latch provides a latch signal to the second device 120 and is used to provide the first data to the second device 120 via the first data line D_in in the shift bus 130. On the other hand, the first device 110 is also configured to receive and retrieve the second data from the second device 120 via the second data line D_out in the shift bus 130.

In this embodiment, the first device 110 can periodically provide the latch signal to the second device 120, so that the second device 120 can receive and retrieve the first data from the first device 110 according to the latch signal. And transmitting the second data to the first device 110 via the second data line D_out in the shift bus 130 according to the latch signal.

Referring in particular to Figures 1 and 3a, in particular, in the present embodiment, the second device 120 includes a temporary storage unit 128 and a buffer space 129. The buffer space 129 may include a plurality of receive buffers R[n]-R[0] (the receive buffers R[n]-R[0] are, for example, set to a queue form), where n is a natural number. The temporary storage unit 128 can include a receiving temporary storage area 128a. The second device 120 can sequentially write the first data on the first data line D_in into the receive buffers R[n]-R[0] of the buffer space 129. Then, when the second device 120 receives the latch signal, the second device 120 can capture the first data in the receive buffer R[n]-R[0] of the buffer space 129, and temporarily store the first data. The data is received in the temporary storage area 128a of the temporary storage unit 128. Then, the second device 120 can continue to sequentially write another first data on the first data line D_in. The buffer 129 is received in the receive buffer R[n]-R[0].

On the other hand, referring specifically to FIG. 3b, in the present embodiment, the buffer space 129 may further include a plurality of transfer buffers T[n]-T[0] (transfer buffers T[n]-T[0], for example. Is set to the queue form). The temporary storage unit 128 can include a transfer buffer area 128b. The second device 120 may temporarily store the second data to be transmitted to the first device 110 in the transfer buffer area 128b. Then, when the second device 120 receives the latch signal, the second device 120 can write the second data temporarily stored in the transfer buffer area 128b to the transfer buffer T[n]-T of the buffer space 129. [0], and the second data in the transmission buffer T[n]-T[0] is sequentially transmitted to the first device 110 by the second data line D_out. Then, the second device 120 can temporarily store another second data to be transmitted to the first device 110 in the transfer temporary storage area 128b, so as to be temporarily stored in the transmission time point when the next latch signal is received. This other second data in the temporary storage area 128b is written in the transfer buffer T[n]-T[0] of the buffer space 129.

Through the above settings, a data transmission system can be implemented.

In another embodiment of the present invention, there is a stop/restart mechanism between the first device 110 and the second device 120 to avoid a lack of communication mechanism when the data transmission system 100 is stopped/restarted. error. The following paragraphs will provide details regarding the stop/restart mechanism in an embodiment of the present invention, but the present invention is not limited to the following.

In this embodiment, in a first operating state (ie, during operation of the data transmission system 100, that is, during the period in which the first device 110 and the second device 120 perform data transmission), if the first device 110 is to be stopped Second device The data transmission mechanism of the first device 110 can provide a transmission stop signal (for example, the signal Disable in FIG. 2) to the second device 120 via the first data line D_in of the shift bus 130. The second device 120 can capture the transmission stop signal according to the latch signal, and after capturing the transmission stop signal, perform a transmission stop procedure of the second device 120 to perform internal data processing to prepare to stop and the first device 110. Data transfer mechanism. Then, after the transmission stop procedure of the second device 120 is completed, the second device 120 can return a stop completion signal (for example, the signal Disable_ok in FIG. 2) via the second data line D_out of the shift bus 130 to The first device 110. After receiving the stop completion signal, the first device 110 stops the data transmission with the second device 120 and stops the data transmission system 100 from operating. In an embodiment, the first device 110 can stop the data transmission with the second device 120 by stopping providing the latch signal or the clock signal to the second device 120. However, the present invention is not limited thereto.

On the other hand, in a second operating state (ie, during the period in which the first device 110 and the second device 120 do not perform data transmission), if the data transmission mechanism between the first device 110 and the second device 120 is to be activated, The first device 110 can provide a transmission start signal to the second device 120 via the first data line D_in of the shift bus 130. The second device 120 can capture the transmission start signal according to the latch signal, and after the transmission start signal is captured, perform a transmission start procedure of the second device 120 to perform internal data processing to prepare for startup and the first device 110. Data transfer mechanism. Then, after the transmission initiation process of the second device 120 is completed, the second device 120 can return a startup completion message via the second data line D_out of the shift bus 130. The first device 110 is activated to enable the first device 110 to start data transmission according to the startup completion signal, so that the first device 110 and the second device 120 start data transmission, and the data transmission system 100 starts to operate. In an embodiment, the first device 110 can start to provide a data transmission to the second device 120 by starting to provide a latch signal or a clock signal to the second device 120. However, the present invention is not limited thereto.

Through the above settings, a data transmission system can be realized. In the data transmission system 100, the first device 110 and the second device 120 can communicate with each other to perform a stop and start procedure of the data transmission system 100. In this way, it is possible to avoid the occurrence of errors due to the lack of communication mechanism when the data transmission system 100 is stopped/restarted, and the reliability and stability of the data transmission system 100 are improved.

The following paragraphs will provide more specific implementation details for the stop and start procedures of the data transfer system 100 in one embodiment of the present invention, although the invention is not limited thereto.

Referring to FIG. 1 again, in the embodiment, the second device 120 further includes a detectable unit 122, a stop/start unit 124, and a status reply unit 126.

The detecting unit 122 can be used to detect whether a transmission stop signal or a transmission start signal is captured. The stop/start unit 124 can be used to perform a transmission stop procedure or a transmission initiation procedure of the second device 120 after capturing the transmission stop signal or transmitting the start signal. The status replying unit 126 can be configured to provide a stop completion signal or a start completion signal to the first device 110 after the transmission stop program or the transmission initiation program of the second device 120 is completed, so as to enable data transmission. The transport system 100 ceases to function or begins to operate.

Through the above arrangement, the first device 110 and the second device 120 can communicate with each other to perform the stop and start procedures of the data transmission system 100.

The details of this case will be further described below through an operational method. The operation method can be applied to the data transmission system 100 which is the same or similar to that in FIG. 1 , and in order to simplify the description, the data transmission system 100 in FIG. 1 is taken as an example to operate the method according to an embodiment of the present invention. It is stated that the invention is not limited to this application.

In addition, it should be understood that the steps of the operation method mentioned in the embodiment may be adjusted according to actual needs, and may be performed simultaneously or partially simultaneously, unless the order is specifically described.

Referring to Figures 1 and 4a, FIG. 4a is a flow chart showing an operation method 400a of the data transmission system according to an embodiment of the invention. The method of operation 400a can include the following steps.

In step S1, the first device 110 provides a latch signal to the second device 120 via the latch signal line Latch in the shift bus 130.

In step S2, in a first operational state (ie, the data transmission system 100 is in operation), the first device 110 provides a transmission stop signal to the second device 120 via the first data line D_in in the shift bus 130. When noted, the order of execution of steps S1 and S2 can be reversed.

In step S3, the second device 120 retrieves the transmission stop signal according to the latch signal. In an embodiment, the second device 120 firstly writes the transmission stop signal on the first data line D_in to the receiving of the buffer space 129 in sequence. In the buffer R[n]-R[0] (refer to FIG. 3a), and at the time point when the second device 120 receives the latch signal, the receiving buffer R[n]-R of the buffer space 129 is captured. The transmission stop signal in [0] temporarily stores the captured transmission stop signal in the reception buffer area 128a of the temporary storage unit 128.

In step S4, after capturing the transmission stop signal, the second device 120 performs a transmission stop procedure of the second device 120 to perform internal data processing to prepare to stop the data transmission mechanism with the first device 110.

In step S5, after the transmission stop procedure of the second device 120 is completed, the second device 120 returns a stop completion signal to the first device 110 via the second data line D_out in the shift bus 130. In an embodiment, the second device 120 may temporarily store the stop completion signal in the transfer buffer area 128b (refer to FIG. 3b). Then, when the second device 120 receives the latch signal, the second device 120 can write the stop completion signal temporarily stored in the transfer buffer area 128b to the transfer buffer T[n]-T of the buffer space 129. In [0], the stop completion signal in the transfer buffer T[n]-T[0] is sequentially transmitted to the first device 110 by the second data line D_out.

In step S6, after receiving the stop completion signal, the first device 110 may stop data transmission with the second device 120. In an embodiment, the first device 110 can stop the data transmission with the second device 120 by stopping providing the latch signal or the clock signal to the second device 120. However, the present invention is not limited thereto.

Through the above operations, the first device 110 and the second device 120 can communicate with each other to perform a stop mechanism of the data transmission system 100. In this way, it is possible to avoid the lack of ditch when the data transmission system 100 is stopped. An error occurs in the mechanism, and the reliability and stability of the data transmission system 100 are improved.

It is noted that in the above-mentioned operation method 400a, some implementation details may refer to the previous implementation aspect, and details are not described herein.

On the other hand, the following will further explain the specific details of the case through another method of operation. Similarly, this other method of operation can be applied to the data transmission system 100 which is the same or similar to that of FIG. 1, and in order to simplify the description, the data transmission system 100 in FIG. 1 will be described below according to an embodiment of the present invention. This other operation method is described as an example, but the present invention is not limited to this application.

Referring to FIG. 1 and FIG. 4b, FIG. 4b is a flow chart showing another operation method 400b of the data transmission system according to an embodiment of the invention. The method of operation 400b can include the following steps.

In step U1, the first device 110 provides a latch signal to the second device 120 via the latch signal line Latch in the shift bus 130.

In step U2, in a second operating state (ie, the data transmission system 100 is stopped), the first device 110 provides a transmission start signal to the second device 120 via the first data line D_in in the shift bus 130. . When noted, the order of execution of step U1 and step U2 can be reversed.

In step U3, the second device 120 retrieves the transmission start signal according to the latch signal. In an embodiment, the second device 120 firstly writes the transmission start signal on the first data line D_in into the receive buffer R[n]-R[0] of the buffer space 129 (refer to FIG. 3a). And receiving a buffer of the buffer space 129 at a point in time when the second device 120 receives the latch signal The transmission start signal in R[n]-R[0] temporarily stores the captured transmission start signal in the reception buffer area 128a of the temporary storage unit 128.

In step U4, after capturing the transmission start signal, the second device 120 performs a transmission initiation procedure of the second device 120 to perform internal data processing to prepare to initiate a data transmission mechanism with the first device 110.

In step U5, after the transmission initiation process of the second device 120 is completed, the second device 120 returns a startup completion signal to the first device 110 via the second data line D_out in the shift bus 130. In an embodiment, the second device 120 may temporarily store the startup completion signal in the transfer buffer area 128b (refer to FIG. 3b). Then, when the second device 120 receives the latch signal, the second device 120 can write the boot completion signal temporarily stored in the transfer buffer area 128b to the transfer buffer T[n]-T of the buffer space 129. In [0], the start completion signal in the transfer buffer T[n]-T[0] is sequentially transmitted to the first device 110 by the second data line D_out.

In step U6, after receiving the startup completion signal, the first device 110 may start data transmission with the second device 120. In an embodiment, the first device 110 can start to provide a data transmission to the second device 120 by starting to provide a latch signal or a clock signal to the second device 120. However, the present invention is not limited thereto.

Through the above operations, the first device 110 and the second device 120 can communicate with each other to perform a startup mechanism of the data transmission system 100. In this way, it is possible to avoid the occurrence of errors due to the lack of communication mechanism when the data transmission system 100 is started, and improve the reliability and stability of the data transmission system 100.

It is noted that, in the above-mentioned operation method 400b, some implementation details may refer to the previous implementation aspect, and details are not described herein.

On the other hand, although in the above paragraphs, the operation methods 400a, 400b are separately described, the operation methods 400a, 400b may be integrated with each other. For example, after performing step S1 of the operation method 400a, the data transmission system 100 can selectively perform step S2 of the operation method 400a or step U2 of the operation method 400b, and the present invention is not limited to the above embodiment.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present case. Anyone skilled in the art can make various changes and refinements without departing from the spirit and scope of the present case. The scope defined in the patent application is subject to change.

400a‧‧‧How to operate

S1-S6‧‧‧ steps

Claims (10)

A method for operating a data transmission system, wherein the data transmission system includes a first device, a second device, and a shifting busbar, wherein the first device and the second device are electrically connected to each other by the shifting busbar The operating method includes: providing, by the first device, a latch signal to the second device via the shift bus; in a first operating state, transmitting the first device via the shift bus Transmitting a stop signal to the second device; and transmitting, by the second device, the transmission stop signal according to the latch signal; after capturing the transmission stop signal, performing the second device by using the second device a transmission stop program; after the transmission stop program of the second device is completed, transmitting, by the second device, a stop completion signal to the first device via the shift bus; and receiving the stop completion signal Thereafter, data transmission with the second device is stopped by the first device. The method of claim 1, further comprising: transmitting, by the first device, a transmission start signal to the second device through the first bus in a second operating state; The second device receives the transmission start signal according to the latch signal After the transmission start signal is captured, a transmission initiation procedure of the second device is performed through the second device; after the transmission initiation program of the second device is completed, the second device is transmitted through the second device The shift bus returns a start completion signal to the first device to cause the first device and the second device to start data transmission. The method of claim 1, wherein the step of capturing the transmission stop signal comprises: writing, by the second device, the transmission stop signal to a buffer space of the second device; receiving the latch signal And capturing the transmission stop signal in the buffer space of the second device, and storing the transmission stop signal in a temporary storage unit of the second device. The method of claim 1, wherein the step of providing the latch signal to the second device comprises: providing the latch signal to the second device via a latch signal line of the shift bus, providing The step of transmitting the stop signal to the second device includes: providing the transmission stop signal to the second device via a first data line of the shift bus, and the step of providing the stop completion signal to the first device includes : returning the stop via a second data line of the shift bus The signal is completed to the first device, and the latch signal line, the first data line, and the second data line are different from each other. The method of claim 4, wherein the data width of the latch signal line, the first data line, and the second data line are all 1-bit. A data transmission system comprising: a first device; a second device; and a shifting bus bar, the first device and the second device being electrically connected to each other by the shifting bus bar; wherein the first device Providing a latch signal to the second device via the shift bus; in a first operating state, the first device is further configured to provide a transmission stop signal to the second device via the shift bus The second device is configured to retrieve the transmission stop signal according to the latch signal, and after performing the transmission stop signal, perform a transmission stop procedure of the second device, and use the second device After the transmission stop procedure is completed, a stop completion signal is transmitted back to the first device via the shift bus; after receiving the stop completion signal, the first device stops data transmission with the second device. The data transmission system of claim 6, wherein the first device is further configured to provide a transmission activation signal to the second device via the shift bus in a second operating state; Taking the transmission start signal according to the latch signal for performing a transmission start procedure of the second device after the transfer start signal is retrieved, and after the transfer start process of the second device is completed, And transmitting, by the shifting bus, a start completion signal to the first device, so that the first device and the second device start data transmission. The data transmission system of claim 6, wherein the second device further comprises a buffer space and a temporary storage unit, the second device is further configured to: write the transmission stop signal to the buffer space; At the time of latching the signal, the transmission stop signal in the buffer space of the second device is captured, and the transmission stop signal is temporarily stored in the temporary storage unit of the second device. The data transmission system of claim 6, wherein the shift bus includes: a latch signal line, wherein the latch signal is provided to the second device via the latch signal line; a first data line, The transmission stop signal is provided to the second device via the first data line; and a second data line, wherein the stop completion signal is transmitted back to the second device via the first data line. And the latch signal line, the first data line, and the second data line are different from each other. The data transmission system of claim 9, wherein the transmission data width of the latch signal line, the first data line, and the second data line are all 1 bit.