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Cross-chip signal synchronization method and device and chip

A signal synchronization and cross-chip technology, applied in the direction of generating/distributing signals, etc., can solve problems such as chip clock signal delay

Active Publication Date: 2020-09-18
TECHTOTOP MICROELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the embodiment of the present invention provides a method, device and chip for cross-chip signal synchronization to solve the problem of delay introduced when correcting the chip clock signal

Method used

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  • Cross-chip signal synchronization method and device and chip
  • Cross-chip signal synchronization method and device and chip

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Embodiment 1

[0041] Such as figure 1 As shown, it is a schematic flowchart of a method for synchronizing signals across chips provided by Embodiment 1 of the present invention. This embodiment is applicable to the application scenario of synchronously correcting clock signals between two chips, and the method can be executed by a device for synchronizing signals across chips, which can be a chip; in this embodiment of the application, the first chip is used As an executive subject, the method specifically includes the following steps:

[0042] S110. Send a synchronization signal to the second chip according to a predetermined time, so that the second chip records the phase count value corresponding to the clock signal of the second chip when receiving the synchronization signal; The phase count value corresponding to the clock signal of the first chip when the synchronization signal is mentioned; the first chip is the same as the second chip;

[0043] Because in the existing clock correc...

Embodiment 2

[0055] Such as figure 2 What is shown is a schematic flowchart of a method for synchronizing signals across chips provided by Embodiment 2 of the present invention. On the basis of the first embodiment, this embodiment also provides another cross-chip signal synchronization method, so as to realize precise synchronization between the first chip and the second chip. The method specifically includes:

[0056] S210. Send a synchronization signal to the second chip according to a predetermined time, so that the second chip records the phase count value corresponding to the clock signal of the second chip when receiving the synchronization signal; wherein, the predetermined time is The phase count value corresponding to the clock signal of the first chip when sending the synchronization signal; the first chip is the same as the second chip;

[0057] When correcting the clock of the second chip, the first chip sends a synchronization signal to the second chip according to the pre...

Embodiment 3

[0070] Such as image 3 What is shown is a schematic flowchart of a method for synchronizing signals across chips provided by Embodiment 2 of the present invention. On the basis of the second embodiment, this embodiment also provides another cross-chip signal synchronization method, so as to realize precise synchronization between the first chip and the second chip. The method specifically includes:

[0071] S310. Determine a predetermined time for sending the synchronization signal to the second chip, and send the predetermined time to the second chip; the predetermined time is the clock of the first chip when sending the synchronization signal The phase count value corresponding to the signal;

[0072] Specifically, before the first chip sends the synchronization signal to the second chip at the predetermined time, the first chip may predetermine a predetermined time for sending the synchronization signal to the second chip, and send the determined predetermined time to th...

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Abstract

The invention belongs to the technical field of signal synchronization, and provides a cross-chip signal synchronization method and device and a chip; a first chip is used as an execution main body, and the method comprises the following steps: sending a synchronization signal to a second chip according to a preset time, so that the second chip records a phase count value corresponding to a clocksignal of the second chip when receiving the synchronization signal, wherein the preset time is a phase count value corresponding to a clock signal of a first chip when the synchronization signal is sent; acquiring the synchronizing signal output to a pin of a first chip and feeding back the synchronizing signal to the first chip; and sending the phase count value of the first chip and the presettime to the second chip when the feedback synchronization signal is received, and thus, the second chip corrects the clock signal of the second chip according to the phase count value of the first chip, the predetermined time and the recorded phase count value when receiving the feedback synchronization signal. According to the embodiment of the invention, the problem of introduction of delay during chip signal correction is solved.

Description

technical field [0001] The invention relates to the technical field of signal synchronization, in particular to a method, device and chip for cross-chip signal synchronization. Background technique [0002] Smart machines are able to complete a variety of complicated tasks, often because there are multiple working chips inside the smart machine. And in order to improve the performance of intelligent machines, multiple chips of the same model can be set to work at the same time. In order to realize the unified operation of multiple chips of the same model, it is necessary to ensure that the clock signals between each chip are synchronized. However, in reality, there are factors such as uncertain circuit delays caused by external capacitors and inconsistent start-up times of different chips in the internal working circuit of the chip, resulting in the asynchronous relationship between the internal clocks of two chips or multiple chips. [0003] In the prior art, the synchron...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F1/12
CPCG06F1/12
Inventor 王名为高峰许祥滨孙功宪
Owner TECHTOTOP MICROELECTRONICS
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