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single-copy atomicity question for AHB5

Hi all~

I have some questions about AHB5 specification

1.If CPU(or another slave) is in 32-bit single-copy atomic group, can I only write/read a byte to it ? (HWDATA/HRDATA is 32bit-width, HBUST=SINGLE, HSIZE='b000)

2.What is the description "Byte strobes associated with a transfer do not affect the single-copy atomicity size" in AHB5 specification capter 9.1 mean ?

Thanks a lot.

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