Here is a copy of an response from Mike Memmott (from Fujitsu), along
with a spreadsheet of some of the cards they've tested. It's an
excerpt from an email conversation we had about 10GbE NICs. Note that
this is pretty old now (Oct 2008), but might still be of value.
I use the Chelsio
Hi everyone,
Does anyone have a sense of whether a dual polarization, 800 MHz
spectrometer with ~2k channels would fit into a ROACH? I have a test
design using the ADC083000 and and two small wideband FFTs. It seems
to work in terms of utilization, but I get a crazy number of timing
errors.
Has
hi laura,
are you trying to clock your FGPA at 200 or 400 MHz?
if you configure the ADC yellow block to input 4 samples per clock,
and sampling at 1600 Msps, then you will need to clock your
fpga at 400 MHz, which is pretty near impossible for virtex 5
and you'll get lots of timing errors.
if
Hi Dan,
The FPGA is clocked at 200 MHz. I used the 3 Gs/s ADC yellow block
running at 1600 MHz feeding a 8 input wideband FFT. The timing errors
were in the FFT.
Laura
On Thu, May 13, 2010 at 10:58 PM, Dan Werthimer d...@ssl.berkeley.edu wrote:
hi laura,
are you trying to clock your FGPA
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