Hi Jonathon, The easiest way to do this is through and ADC. If you arent using an ADC on the board then you will need to make some tweaks to the tools. We dont support this at the moment but it shouldnt be hard to add it.
You could implement this in a couple of ways: It could be done in the the roach_infrastructure block, you will have to put it thought a differential buffer and provide the output to the rest of the system. You can see how it was done with the aux_clks on roach1. Or you could do it in the gpio block similar to the way the aux_clks are exposed as GPIOs on roach1. I am pretty busy this week, but will be available next week to help out if you need. Regards Wes On Tue, Jan 29, 2013 at 6:38 PM, Jonathon Kocz <jk...@cfa.harvard.edu>wrote: > Hi All, > > We are attempting to bring in a PPS signal on the ROACH2 J10 SMA connector. > > Does this still come in as with the ROACH using the GPIO block? Is there a > page or document somewhere that describes how to bring this signal in? > (GPIO bit map/other, similar to > https://casper.berkeley.edu/wiki/ROACH_FPGA_Interfaces ?) > > Many thanks, > Jonathon >
