CN114137394B - Synchronous calibration device and calibration method for trigger signal transmitting direction - Google Patents
Synchronous calibration device and calibration method for trigger signal transmitting direction Download PDFInfo
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- CN114137394B CN114137394B CN202111451208.1A CN202111451208A CN114137394B CN 114137394 B CN114137394 B CN 114137394B CN 202111451208 A CN202111451208 A CN 202111451208A CN 114137394 B CN114137394 B CN 114137394B
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims description 12
- 238000013507 mapping Methods 0.000 claims abstract description 29
- 101100152663 Caenorhabditis elegans tdc-1 gene Proteins 0.000 claims abstract description 26
- 101150010135 TDC2 gene Proteins 0.000 claims abstract description 26
- 238000005259 measurement Methods 0.000 claims description 15
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000001960 triggered effect Effects 0.000 claims description 4
- 230000008054 signal transmission Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 5
- 239000004065 semiconductor Substances 0.000 description 2
- 238000012937 correction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000013558 reference substance Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2851—Testing of integrated circuits [IC]
- G01R31/2882—Testing timing characteristics
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2832—Specific tests of electronic circuits not provided for elsewhere
- G01R31/2834—Automated test systems [ATE]; using microprocessors or computers
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Abstract
A synchronous calibration device for trigger signal transmitting direction comprises a digital board module and an AC calibration board module; the AC calibration plate module includes a first data interface, a first controller, and N TDC chips (TDC 1, TDC2, … tdcN); the first controller controls N TDC chips (TDC 1, TDC2 and … tdcN) to collect data, and controls the first data interface to send the collected original data out through the first data interface; the digital board module comprises a second data interface, a second controller, a channel mapping relation table and M data channels (ch 1, ch2 and … chM); the second controller controls the second data interface to receive the original data sent from the first data interface, forms the connection relation between each channel of the N TDC chips (TDC 1, TDC2, … tdcN) and M data channels (ch 1, ch2, … chM) according to the channel mapping relation table, and obtains and stores the delay data in the M data channels (ch 1, ch2, … chM).
Description
Technical Field
The invention relates to the field of automatic semiconductor test equipment (Automatic Test Equipment, ATE for short), in particular to a method and calibration equipment for synchronously calibrating the sending direction of a trigger signal in ATE semiconductor integrated circuit test equipment.
Background
The tuning-calibration (Adjustment Caliration, AC) is a set of operations for determining, under prescribed conditions, the relationship between the magnitude indicated by the meter measuring instrument or measuring system, or the magnitude represented by the material measure or reference substance, and the corresponding magnitude reproduced by the standard. The calibration results may give an indication of the measured value, and may determine a correction value of the indication.
The transmission direction synchronization calibration board (AC calibration board) is a printed circuit board, on which a micro control unit (Microcontroller Unit, MCU) and a plurality of time-to-digital converter (Time to Digital Convert, TDC) chips are mounted, and the main function of the TDC chips is to measure the time for triggering a plurality of channel signals.
Referring to fig. 1, fig. 1 is a schematic diagram showing a connection relationship between each channel of an AC calibration board and a digital board channel in the prior art. As shown in fig. 1, the AC calibration board includes 20 TDC chips (TDC 1, TDC2, … TDC 20), and the connection relationship between each channel of each TDC chip and the channel of the digital board is mainly represented as a mapping relationship between the channels. In the prior art, the mapping relationship between the AC calibration board and the digital board channels is typically stored on the AC calibration board, and the processing of the mapping relationship is also performed on the AC calibration board.
However, in practical use, different types of digital boards differ in the number of channels, and there is a large difference in the mapping relationship of the connection between the digital board channels and the AC calibration board channels. Especially in software processing, when adding a new type of digital board, the AC calibration board needs to be modified to maintain a channel mapping relation table with different boards. Therefore, the above application manner directly results in that the AC calibration board is difficult to adapt to different types of digital boards, and the design of the conventional software framework is difficult to meet the requirement of simultaneously adapting to a plurality of different digital boards.
Disclosure of Invention
The invention aims to provide a testing device and a verification method for synchronous calibration of trigger signal sending directions, which are used for solving the problem that an AC calibration board is difficult to adapt to different types of digital boards in the prior art.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
a synchronous calibration device for trigger signal transmitting direction comprises a digital board module and an AC calibration board module;
the AC calibration plate module includes a first data interface, a first controller, and N TDC chips (TDC 1, TDC2, … tdcN); the first controller controls the N TDC chips (TDC 1, TDC2 and … tdcN) to collect data, and controls the first data interface to send out the collected original data through the first data interface;
the digital board module comprises a second data interface, a second controller, a channel mapping relation table and M data channels (ch 1, ch2 and … chM); the second controller controls the second data interface to receive the original data sent from the first data interface, and forms the N blocks according to the channel mapping relation table
The connection relation between each channel of the TDC chip (TDC 1, TDC2, … tdcN) and M data channels (ch 1, ch2, … chM) is obtained and stored with delay data in the M data channels (ch 1, ch2, … chM); wherein M and N are 1 or more and M is 1 or less and N are less than or equal to the total channel number of the TDC chips (TDC 1, TDC2, … tdcN).
Further, during calibration, the second controller controls to obtain configuration information of the AC calibration board according to the channel mapping relation table, and during triggering measurement, the configuration information is sent to the AC calibration board to realize dynamic configuration.
Further, the M is 60, the N is 20, each TDC chip has three measurement channels, and the raw data is data acquired by 60 channels in all the TDC chips (TDC 1, TDC2, … TDC 20).
In order to achieve the above purpose, the technical scheme of the invention is as follows:
the synchronous calibration method of the trigger signal transmitting direction adopts the synchronous calibration device of the trigger signal transmitting direction, and comprises the following steps:
step S1: during calibration, the second controller controls the configuration information of the AC calibration board according to the channel mapping relation table; when the measurement is triggered, the configuration information is sent to the AC calibration board to realize dynamic configuration;
step S2: the first controller controls the N TDC chips (TDC 1, TDC2 and … tdcN) to collect data, and controls the first data interface to send out the collected original data through the first data interface;
step S3: the second controller controls the second data interface to receive the original data sent from the first data interface, forms a connection relation between each channel of the N TDC chips (TDC 1, TDC2, … tdcN) and M data channels (ch 1, ch2, … chM) according to the channel mapping relation table, and obtains and stores delay data in the M data channels (ch 1, ch2, … chM).
The technical scheme can be seen that the device and the calibration method for synchronously calibrating the sending direction of the trigger signal solve the problem of adapting to an AC calibration board when a new type of digital board is added. The new digital board is adapted under the condition that the AC calibration board is not changed, and the development difficulty is greatly reduced.
Drawings
FIG. 1 is a schematic diagram showing the connection relationship between each channel of an AC calibration plate and a digital plate channel in the prior art
FIG. 2 is a schematic diagram showing the connection relationship between each channel of the AC calibration board and the digital board channel in the embodiment of the present invention
FIG. 3 is a schematic diagram showing a method for testing the synchronous calibration of the trigger signal transmitting direction in an embodiment of the present invention
Detailed Description
The following describes the embodiments of the present invention in further detail with reference to fig. 2-3.
It should be noted that, the synchronous calibration device and the calibration method for the trigger signal transmitting direction of the invention store and process the mapping relation with the channels of the AC calibration board on the digital board, and the AC calibration board is only responsible for measuring the trigger time of all the channels. Specifically, the data measured by all the tdc chips in the AC calibration board are sent to the digital board. After the digital board receives the data, the tdc chip data is mapped onto the channel to be measured according to the channel mapping relation table stored in the digital board, and the measurement is completed.
In an embodiment of the present invention, as in the prior art, the synchronous calibration device for the trigger signal transmission direction includes a digital board module and an AC calibration board module.
Unlike the prior art, the AC calibration plate module includes a first data interface, a first controller, and N TDC chips (TDC 1, TDC2, … tdcN); the first controller controls the N TDC chips (TDC 1, TDC2 and … tdcN) to collect data, and controls the first data interface to send out the collected original data through the first data interface; typically, each of the TDC chips has three measurement channels, and the raw data is data collected by all of the TDC chips (TDC 1, TDC2, … tdcN).
The digital board module comprises a second data interface, a second controller, a channel mapping relation table and M data channels (ch 1, ch2 and … chM); the second controller controls the second data interface to receive the original data sent from the first data interface, and forms a connection relation between each channel of the N TDC chips (TDC 1, TDC2, … tdcN) and M data channels (ch 1, ch2, … chM) according to the channel mapping relation table, so as to obtain and store delay data in the M data channels (ch 1, ch2, … chM); wherein M and N are 1 or more and M is 1 or less and N are less than or equal to the total channel number of the TDC chips (TDC 1, TDC2, … tdcN).
During calibration, the second controller controls the configuration information of the AC calibration board according to the channel mapping relation table, the digital board stores the mapping relation table of the channels of the digital board and the channels of the AC calibration board, a specific channel connection mode is recorded in the table, and the configuration of the TDC chip can be obtained through the table. And when or before the measurement is triggered, the configuration information is sent to the AC calibration board to realize dynamic configuration and trigger the measurement.
Example 1
Referring to fig. 2, fig. 2 is a schematic diagram showing a connection relationship between each channel of the AC calibration board and a digital board channel according to an embodiment of the invention. As shown in fig. 2, the synchronous calibration device for the trigger signal transmitting direction comprises a digital board module and an AC calibration board module; the AC calibration board comprises 20 TDC chips (TDC 1, TDC2, … TDC 20), the digital board comprises 60 data channels (ch 1, ch2, … ch 60), and the connection relationship between each channel of each TDC chip and the digital board channel is mainly represented as the mapping relationship between the channels. Also, each TDC chip has three measurement channels (step 1, step2, and step 3), and thus, 20 TDC chips also have 60 channels.
In the embodiment of the invention, the digital board stores a mapping relation table of 60 data channels (ch 1, ch2, … ch 60) and all channels (20 x 3) of the AC calibration board, and specific channels and connection modes of the digital board are recorded in the table, so that the configuration of each TDC chip can be obtained from the table.
Referring to fig. 3, fig. 3 is a schematic diagram illustrating a test method for calibrating the trigger signal transmission direction synchronization in an embodiment of the invention. The synchronous calibration method of the trigger signal transmitting direction adopts the synchronous calibration device of the trigger signal transmitting direction, and comprises the following steps:
step S1: during calibration, the second controller controls the configuration information of the AC calibration board according to the channel mapping relation table; when the measurement is triggered, the configuration information is sent to the AC calibration board to realize dynamic configuration;
step S2: the first controller controls the 20 TDC chips (TDC 1, TDC2, … TDC 20) to collect data, and controls the first data interface to send the collected original data out through the first data interface;
step S3: the second controller controls the second data interface to receive the original data sent from the first data interface, forms a connection relation between each channel of the 20 TDC chips (TDC 1, TDC2, … TDC 20) and 60 data channels (ch 1, ch2, … ch 60) according to the channel mapping relation table, and obtains and stores delay data in the 60 data channels (ch 1, ch2, … ch 60).
In summary, the synchronous calibration device and calibration method for the trigger signal transmitting direction of the present invention stores the mapping relation table of the self channel and the AC calibration board channel through the digital board, and the specific channel connection mode is recorded in the table, so that the configuration of the tdc chip can be obtained from the table.
The pre-measurement sends a configuration to the AC calibration plate and triggers the measurement. The raw data measured by the AC calibration plate are the times measured by the three channels of all the tdc chips. These data are sent to the digital board. And after the digital board receives the original data, obtaining the measurement time of the channel according to the channel mapping relation table.
The foregoing description is only of the preferred embodiments of the present invention, and the embodiments are not intended to limit the scope of the invention, so that all changes made in the equivalent structures of the present invention described in the specification and the drawings are included in the scope of the invention.
Claims (4)
1. The synchronous calibration device for the trigger signal transmission direction is characterized by comprising a digital board module and an AC calibration board module;
the AC calibration board module is a transmit direction synchronization calibration board comprising a first data interface, a first controller, and N TDC chips (TDC 1, TDC2, … tdcN); the first controller controls the N TDC chips (TDC 1, TDC2 and … tdcN) to collect data, and controls the first data interface to send out the collected original data through the first data interface;
the digital board module comprises a second data interface, a second controller, a channel mapping relation table and M data channels (ch 1, ch2 and … chM); the second controller controls the second data interface to receive the original data sent from the first data interface, and forms a connection relation between each channel of the N TDC chips (TDC 1, TDC2, … tdcN) and M data channels (ch 1, ch2, … chM) according to the channel mapping relation table, so as to obtain and store delay data in the M data channels (ch 1, ch2, … chM); wherein M and N are 1 or more and M is 1 or less and N are less than or equal to the total channel number of the TDC chips (TDC 1, TDC2, … tdcN).
2. The synchronous calibration device for the transmission direction of the trigger signal according to claim 1, wherein the second controller controls to obtain configuration information of the AC calibration board according to the channel mapping relation table during calibration, and transmits the configuration information to the AC calibration board to realize dynamic configuration during trigger measurement.
3. The synchronous calibration device according to claim 2, wherein M is 60 and n is 20, each TDC chip has three measurement channels, and the raw data is data collected from 60 channels of all TDC chips (TDC 1, TDC2, … TDC 20).
4. A method for synchronously calibrating the transmission direction of a trigger signal, which adopts the synchronous calibrating device for the transmission direction of the trigger signal according to any one of claims 1 to 3, and is characterized by comprising the following steps:
step S1: during calibration, the second controller controls the configuration information of the AC calibration board according to the channel mapping relation table; when the measurement is triggered, the configuration information is sent to the AC calibration board to realize dynamic configuration;
step S2: the first controller controls the N TDC chips (TDC 1, TDC2 and … tdcN) to collect data, and controls the first data interface to send out the collected original data through the first data interface;
step S3: the second controller controls the second data interface to receive the original data sent from the first data interface, forms a connection relation between each channel of the N TDC chips (TDC 1, TDC2, … tdcN) and M data channels (ch 1, ch2, … chM) according to the channel mapping relation table, and obtains and stores delay data in the M data channels (ch 1, ch2, … chM).
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