ahb size边界

AHB总线的size边界是1KB。这意味着在AHB总线上进行传输时，地址边界和传输大小都需要对齐到1KB。例如，字传输需要对齐到字地址边界（A\[1:0\] = 00），半字传输需要对齐到半字地址边界（A\[0\] = 0）。这个边界限制了AHB总线上传输的大小和地址范围。\[1\]
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