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Why should PSTRB be driven low for read transfers?
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Why should PSTRB be driven low for read transfers?
alinx
over 1 year ago
Why does APB4 require the byte strobes to be driven low during read transfers?
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Colin Campbell
over 1 year ago
+3
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PSTRB is a WRITE strobe, so it has no meaning for read transfers. If a write strobe was active during reads it might lead to confusion. I guess you are asking from the perspective of "if it has no meaning...
alinx
over 1 year ago
in reply to
Colin Campbell
+2
Hi Colin, Yes. This is what I meant to ask: "if it has no meaning during reads, why mandate that it is driven low". An alternate mandate could have been to ignore PSTRB for read transfers the same...
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