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What should be the value of the WLAST signal if the length of the write burst is always equal to 0

In AXI4, if the length of the write burst is always equal to 0 (one transfer in burst), The wlast Signal can always be asserted in this case? If not, what should be the value of the WLAST SIGNAL?

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  • It would always be high when WVALID is asserted in this scenario. When WVALID is de-asserted we don't care what value WLAST takes.

    So you could simply always drive WLAST high if you knew all write transactions would have length 1 transfer.

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  • It would always be high when WVALID is asserted in this scenario. When WVALID is de-asserted we don't care what value WLAST takes.

    So you could simply always drive WLAST high if you knew all write transactions would have length 1 transfer.

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