作者cactusseed (难过...我也想吃便当)
站内Electronics
标题[问题] AMBA与tristate
时间Thu May 8 22:11:32 2008
最近看AMBA spec，里面有提到
In order to allow implementation of an AHB system without the use of tristate drivers
separate read and write data buses are required.
想请问一下为什麽要避免tristate?
tristate不是本来就会用在bus上面吗?
还有为什麽把read 和 write data buses分开可以避免tristate?
谢谢各位大大指教>"<
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1F：推 rogerable:讯号都单向自然就不用tristate了阿 05/10 11:02