•
What value should be driven on
mm2s_allow_addr_req
and
s2mm_allow_addr_req
if you do not want to use these signals?
Answer:
mm2s_allow_addr_req
and
s2mm_allow_addr_req
should be tied to '1' if you do not want to control it. There are example timing diagrams (
This Figure
and
This Figure
) to provide more clarity on usage of these signals. By default, these pins are not exposed and are tied to '1'.
•
When
mm2s_halt
is asserted,
m_axis_mm2s_tvalid
is asserted sometimes.
Answer: When AXI DataMover goes through soft shutdown, it flushes internal FIFOs, thus you will find some residual data appearing on streaming side.