hi katty, the data from the ADC comes across the zdcoc 4 bytes at a time, at 500 Mbits/sec on each of 32 LVDS pairs. which is equivalent to 2GBytes/sec. the fpga is clocked at 250 MHz, so the data is DDR - double data rate.
best wishes, dan On Tue, Jun 17, 2014 at 2:27 PM, katherine viviana cortes urbina < [email protected]> wrote: > Hi all, > > I have a question? For example: > > For wideband spectrometers on the ROACH 1.0 with ADC2x1000-8 in > interleaved mode (2 GSps, 8 bit), I have 8 stream, i.e, 8 stream X 8 bits = > 64 lines, but in the wiki web https://casper.berkeley.edu/wiki/ROACH, I > have 40 differential pair connectors Z-DOK. How is it possible? > any idea or reference? > > Cheers > > Katty >
