Technique for Asynchronous Clocks in Video Signal Processing SoC

YANG Ping-zhong; SUN Yi-he

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Technique for Asynchronous Clocks in Video Signal Processing SoC

更新时间：2026-09-04

- Technique for Asynchronous Clocks in Video Signal Processing SoC
- Vol. 27, Issue 6, Pages: 24-27(2010)
- 作者机构：
  
  清华大学微电子学研究所清华信息科学与技术国家实验室,北京,100084
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2010
- 稿件说明：
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杨平中, 孙义和. 视频信号处理SoC中异步时钟处理技术[J]. 微电子学与计算机, 2010, 27(6): 24-27,31.

YANG Ping-zhong, SUN Yi-he. Technique for Asynchronous Clocks in Video Signal Processing SoC[J]. 2010, 27(6): 24-27.
杨平中, 孙义和. 视频信号处理SoC中异步时钟处理技术[J]. 微电子学与计算机, 2010, 27(6): 24-27,31. DOI：

YANG Ping-zhong, SUN Yi-he. Technique for Asynchronous Clocks in Video Signal Processing SoC[J]. 2010, 27(6): 24-27. DOI：

摘要

为了解决视频信号处理SoC中处理器与众多接口驱动处于异步多时钟域可能产生的亚稳态问题

分析了亚稳态产生的原因

研究了格雷码、同步器、FIFO技术

结合VLIW视频信号处理SoC的结构

设计了FIFO和帧缓存存储模块

实验结果表明提出的方案可保证SoC中处理器和接口驱动间稳定的数据通信

而不会发生亚稳态现象.

Abstract

In the video signal processing SoC the processor and many interface drivers are in asynchronous clock domains and this may have metastable problem

this paper analyses the reasons of metastability

study on Gray code、synchronizer、FIFO technology.Combined with the structure of VLIW video signal processing SoC

we design FIFO and frame buffer models

the results of experiment show that the solution put forward by this paper is conducive to ensure the stability of communication between the processor and interface drivers in the SoC

rather than metastability happened.

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