When I place a QDR yellow block in a ROACH model, the "data out" port is 36
bits wide. In a ROACH2 model, the QDR "data out" port is 72 bits wide. The
"data in" port seems to double in expected width as well on ROACH2 as compared
to ROACH.
Why the dramatic interface change for ROACH2? Are th
I'm pretty sure they're twice as wide to keep up with the increased
processing throughput possible with the bigger FPGA.
On Tue, Feb 5, 2013 at 3:10 PM, David MacMahon
wrote:
> When I place a QDR yellow block in a ROACH model, the "data out" port is 36
> bits wide. In a ROACH2 model, the QDR "d
Thanks, Glenn!
Dave
On Feb 5, 2013, at 3:58 PM, G Jones wrote:
> I'm pretty sure they're twice as wide to keep up with the increased
> processing throughput possible with the bigger FPGA.
>
> On Tue, Feb 5, 2013 at 3:10 PM, David MacMahon
> wrote:
>> When I place a QDR yellow block in a ROACH
Confirmed! twice as many chips, each twice as wide and twice as deep. Yay for
bigger and better!
iBOB: 2x 36-bit SRAM x 18Mb
ROACH-1: 2 x 18-bit QDR x 36Mb (or 72Mb, depending on what Mo's populated)
ROACH-2: 4 x 36-bit QDR x 72Mb (or 144Mb, depending on what Mo's populating)
Jason
On 06 Feb 2
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