[Cryptech Tech] fpga speed

Michael dockter at dkey.org
Wed Jun 13 16:55:50 UTC 2018


I posted a couple video clips on Cryptech #hardware so I wont repeat 
them here. Bottom line is that you can see an increase in the frequency 
of rdenable | wrenable which is assigned to the LED. However the 
increase in sigs/sec is marginal +0.2 sigs/sec.

I also recompile the .bit file with DEFAULT_SCLK_DIV = 8'h0010, with no 
measurable difference.

Not sure where to go from here. I will have my frequency counter 
tomorrow, so if I can get some help on the RTL to assign sclk to a GPIO 
I can measure the exact frequency. It kind of feels to me like there is 
a bottleneck somewhere else that is not dependent on sclk.......



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