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中文社区论区
APB, AHB, AXI 3, AXI 4 的区别是什么?
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APB, AHB, AXI 3, AXI 4 的区别是什么?
Jenny Su 苏琴
over 11 years ago
georgewang
chuxuezheng
luwenjin
malei
Top replies
ct
over 11 years ago
+1
verified
APB是双cycle设计,只有一半的cycle在传数据,设计简单,一般用来连接吞吐量需求较低配置端口,不过在ARM总线内部都会转成AXI来传输。AHB算是三通道协议,分别是读写数据和地址通道,读写共用一个地址通道,所以吞吐量也不是很理想,但是设计简单,cortex m0就是ahb的,还有很多legacy device采用ahb, ahb在ARM总线内部也是转成AXI传输和仲裁。AXI的是5通道设计的...