the usage of WSTRB signal

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SoC Design forum the usage of WSTRB signal

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Note: This was originally posted on 26th February 2009 at http://forums.arm.com

Hi All,
I was going through the AMBA AXI specs, but I have some questions about the usage of the WSTRB signal. In the middle of a burst, can some bits of WSTRB be low? Again, in the last transfer of a burst, can some bits of WSTRB be low? For example, assuming the data bus is 32-bit wide and in the middle of a burst, can I transfer data 0x11xx22xx(x means don't care) and set WSTRB to be 0b1010 ? Thanks in advance.

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0 Offline Dong Luo over 6 years ago

Note: This was originally posted on 3rd March 2009 at http://forums.arm.com

Hi JD,
I'm sorry. I forgot that AWSIZE can not be changed in a burst. Your explanation is what I want and I understand the usage of AWSIZE and WSTRB thoroughly. Thank you very much.
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0 Offline Dong Luo over 6 years ago

Note: This was originally posted on 3rd March 2009 at http://forums.arm.com

Hi JD,
I'm sorry. I forgot that AWSIZE can not be changed in a burst. Your explanation is what I want and I understand the usage of AWSIZE and WSTRB thoroughly. Thank you very much.
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