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AMBA、AHB、APB、AXI的理解
2022-07-06 12:01:00 【csdndulala】
- 背景知識
AHB(Advanced High-performance Bus), 高速總線,用來接高速外設的。APB (Advanced Peripheral Bus) 低速總線,用來接低速外設的。
https://zhuanlan.zhihu.com/p/157808097
AMBA、AHB、APB、AXI總線介紹及對比
https://zhuanlan.zhihu.com/p/161077476
- 個人理解 歡迎指正
AMBA是總線體系:包括AHB、APB、AXI
AHB比APB快速
AXI比AHB支持同時讀寫,功能更强大
因此 CPU和外設通過AXI連接,外設又可以通過X2P(AXI <->AHB)與AHB總線連接,其他外設也可以連接AHB,慢速外設通過H2P(AHB <->APB)與AHB總線連接
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