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AMBA、AHB、APB、AXI的理解
2022-07-06 09:17:00 【csdndulala】
- 背景知识
AHB(Advanced High-performance Bus), 高速总线,用来接高速外设的。APB (Advanced Peripheral Bus) 低速总线,用来接低速外设的。
https://zhuanlan.zhihu.com/p/157808097
AMBA、AHB、APB、AXI总线介绍及对比
https://zhuanlan.zhihu.com/p/161077476
- 个人理解 欢迎指正
AMBA是总线体系:包括AHB、APB、AXI
AHB比APB快速
AXI比AHB支持同时读写,功能更强大
因此 CPU和外设通过AXI连接,外设又可以通过X2P(AXI <->AHB)与AHB总线连接,其他外设也可以连接AHB,慢速外设通过H2P(AHB <->APB)与AHB总线连接
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