SoC Design and Simulation forum why PSTRB signal in APB4 have four bits?

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why PSTRB signal in APB4 have four bits?

anshu over 5 years ago

PSTRB signal indicates which byte lanes to update during a write transfer.

it shows that the bus contain valid data, when PSTRB[3:0]=1111.

why we need bus instead of single bit PSTRB signal?

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Colin Campbell over 5 years ago +1 verified

In the APB spec in table 2.1 there is a description of each signal, and the description for PSTRB indicates... "There is one write strobe for each eight bits of the write data bus. Therefore, PSTRB[n...

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0 a.surati over 5 years ago

Hello,

This might be of help.

-amol
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0 a.surati over 5 years ago

Hello,

This might be of help.

-amol
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