i have a question about AXI BUS.

Top replies

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  Colin Campbell over 5 years ago +1 verified
  Each bit of WSTRB covers 8 bits of WDATA, so sending WSTRB=4'b1110 would signal that WDATA[7:0] is invalid. There wouldn't be any simple way of signalling WDATA[3:0] as being invalid. Sending WSTRB=4...
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  Colin Campbell over 5 years ago in reply to KSOKOREA +1 verified
  Sending WSTRB=4'b1111 would signal all 32-bits of data are valid, so not what you want, but not a protocol violation. It looks like you already know 4'b1110 is the WSTRB value you want, so why consider...
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  Colin Campbell over 5 years ago in reply to KSOKOREA +1 verified
  If the AXI bus master is correctly designed, it will send the correct WSTRB encoding to match the valid data. If you are designing the slave in this case you've got to assume whoever has designed the...