pavan
February 7, 2013, 2:33pm
1
Hi,
I am using the XEM6310-LX150 and an AES encrypted bit file.
The bit file is ~4MBytes.
The FPGA configuration time from System FLASH is ~35 seconds.
The FPGA configuration time using the USB interface is ~1 second.
Is there a way to speed up the configuration via System FLASH?
Thanks,
Are you using bitstream compression?
pavan
February 7, 2013, 6:12pm
3
no…I am not using bit stream compression.
I must use an encrypted bit stream and it seems it can’t be used with bit stream compression based on my reading in the Xilinx Spartan 6 config guide.
Is 35sec the expected config time for an uncompressed bit stream?
We see a similar ~32sec boot from flash time for an uncompressed XEM6310-LX150 bit stream. This is the best performance available at the moment without compression but we are working on reducing that time for future firmware releases.
pavan
February 14, 2013, 8:05pm
5
Yes…I am seeing 32sec too, when I measure it accurately…
It’s acceptable for us now…I was just wondering.
It would be nice to have it faster in the future.
Thanks,