一种方便实用的PLD/PAD下载转换电路

A Practically Convenient Circut for Converting PLD/PAC Download

针对EDA技术中不同公司生产的可编程逻辑芯片(PLD)和可编程模拟芯片(PAD)的下载口与计算机相连处接线的多样性的情况,使用74HC4053多路模拟分配器芯片,设计开发出了不同公司可编程芯片的下载口的相互转换电路,并且具体给出了ALTERA公司MAX/FLEX系列器件和Lattice公司的ispPAC系列器件与计算机25针并口电缆相连的下载转换电路图。

Aiming at the problem that the connection diversity of the different company＇s PLD/PAD download port connected to the computer in the EDA technology, a converting circut of different company programmable device dowload port used on 74HC4053 analog multiplexers is designed in this paper, and a practicable download port converting circut that the MAX/FLEX series device of ALTERA and the ispPAC series device of Lattice connected to the computer with the 25pin parallel oort cable.