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leonqin_2025's avatar
leonqin_2025
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10 months ago

Why AXI MCDMA IP output axi-stream with Spares TKeep and borken TData?

as described in datasheet,"The sparse tkeep is not allowed." but,I got the wave by signaltap: why?
RongY_altera's avatar
RongY_altera
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10 months ago

Hi,

The "sparse tkeep" means a pattern like 8'b10101010.

A tkeep like 8'b00001111 is considered contiguous.


Regards,

Rong


  • leonqin_2025's avatar
    leonqin_2025
    Icon for New Contributor rankNew Contributor
    10 months ago

    Thanks for your reply!

    but in UG-817911,"The invalid bytes are allowed only during
    h2d_axi_st_tlast cycle" means that it allowed ONLY at last cycle?