PCI总线卡设计与实现的几个关键问题

摘要

PCI是一种高性能的局部总线规范，可实现各种功能的标准PCI总线卡，取得了广泛应用。本文简要介绍与PCI总线卡设计及实现相关的几个关键技术问题，主要包括时钟与复位信号、总线分支长度的限制、电平转换电路、PCI总线对 负载的要求等。%PCI is a type of high-performance local bus specification.PCI bus cards with various functions have been used wid ely.This paper briefly introduces some key technical issues related to the desig n and implementation of PCI bus cards.The main topics included in this paper are clock and reset signals,limitation of bus trace lengths,voltage level transform ation logic,and PCI bus requirements for loads.