Hi Tom,
Any one of the IBOB's header GPIOs should be able monitor it. You
will probably need to put in a series resistor to protect the
LVCMOS inputs pad from the TTL signal:
http://www.xilinx.com/support/answers/10835.htm
Thanks,
Henry
On 2/23/2011 12:12 PM, Tom Kuiper wrote:
We have a box with an iADC, an iBOB and an 800 MHz clock, plus power
supplies, for our SETI spectrometer. The clock is (supposedly) locked
to a 100 MHz reference. There is a TTL lock indicator we would like to
monitor. Can we feed that signal onto some appropriate pin of the iBOB
and read its state?
Thanks and regards
Tom
