Hi Leon,
Thanks for posting your latest circuit. You may need to pass the 24.576MHz
clock across to your FPGA. That is unless you know a way of running with
out
it - in which case please let the rest of us know how!
Presently Bill and I are using two state machines in the FPGA - one runs
of
the 24.576MHz clock and talks to the A/D converter and the other off the
FX2
clock (12/24/48MHz) and talks to the FX2. The FX2 USB connection appears
to
be very unforgiving if you don't use its clock for any USB associated
tasks.