Andrey_P
New Contributor
4 years agoLatency of rdreq to q[] in DCFIFO
In the FIFO User guide I see the following in Table 7:
Output latency of rdreq to q[] : 1 rdlck.
At the same time, on Figure 3 ( Functional Timing for the rdreq Signal and the rdempty Signal
), I see that data on q[] appears on the same rdclk that samples asserted rdreq, i.e. the latency between rdreq and q[] is 0 rdclk (see the screenshot below)
So the question is: what is wrong - the spec value or the timing diagram?
The simulation results with Agilex are consistent with the Figure 3, so perhaps the spec should be corrected?
Andrey,
Thanks for you input. This probably related to documentation spec bug which I will file for fix. Seem there is discrepancy between spec and diagram 3.