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Altera_Forum's avatar
Altera_Forum
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16 years ago

read from scfifo wrong!how to use it?

read from scfifo wrong! my fist read data should be 40h,but now is 00h. left picture is from ALERA ,right picture is from my singalTapII, whether phase position has some problem?
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

The results look correct to me too. rdreq is not asserted for the clock pulse under the green bar, but on the next clock edge (when rdreq is asserted) 0x40 comes out of the FIFO.