A practical guide to AMBA Low Power Interface handshake protocols: Q-Channel and P-Channel signal tables, state machines, timing diagrams, and design rules from ARM IHI0068.
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SoC Article 06: Interconnects and Bus Protocols - AXI, AHB, and APB
How SoC blocks communicate: the AMBA bus family from simple APB peripherals through pipelined AHB to the high-performance AXI4 with its five independent channels, valid/ready handshake, and crossbar interconnects.
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