电子技术应用
電子技術應用
전자기술응용
APPLICATION OF ELECTRONIC TECHNIQUE
2009年
12期
61-64
,共4页
Camera%Link%异步FIFO%双口RAM%亚稳态%格雷码
Camera%Link%異步FIFO%雙口RAM%亞穩態%格雷碼
Camera%Link%이보FIFO%쌍구RAM%아은태%격뢰마
Camera Link%asynchronous FIFO%dual RAM%metastability%gray code
介绍了异步FIFO在Camera Link接口中的应用,将Camera Link接口中的帧有效信号FVAL和行有效信号LVAL引入到异步FIFO的设计中.分析了FPGA中设计异步FIFO的难点,解决了异步FIFO设计中存在的两个关键问题:一是尽量降低电路中亚稳态的出现概率;二是如何产生空、满等相应的控制信号.为Camera Link接口提供了稳定的视频数据及控制信号.
介紹瞭異步FIFO在Camera Link接口中的應用,將Camera Link接口中的幀有效信號FVAL和行有效信號LVAL引入到異步FIFO的設計中.分析瞭FPGA中設計異步FIFO的難點,解決瞭異步FIFO設計中存在的兩箇關鍵問題:一是儘量降低電路中亞穩態的齣現概率;二是如何產生空、滿等相應的控製信號.為Camera Link接口提供瞭穩定的視頻數據及控製信號.
개소료이보FIFO재Camera Link접구중적응용,장Camera Link접구중적정유효신호FVAL화행유효신호LVAL인입도이보FIFO적설계중.분석료FPGA중설계이보FIFO적난점,해결료이보FIFO설계중존재적량개관건문제:일시진량강저전로중아은태적출현개솔;이시여하산생공、만등상응적공제신호.위Camera Link접구제공료은정적시빈수거급공제신호.
Application of asynchronous FIFO used in the Camera Link interface is recommended. Frame valid signal and line valid signal of Camera Link interface are introduced into the design of asynchronous FIFO. The article is focused on the difficulties of design asynchronous FIFO in FPGA. Meanwhile the design solved two key issues: how to reduce the the probability of the metastability appearance and how to produce the empty or full control-signal. The Asynchronous FIFO provides a stable video data and control-signal to Camera Link interface.
