Is there a way to speed up the FPGA configuration from System FLASH on XEM6310-LX150

Spartan-6 USB 3.0 Modules
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,

2

Are you using bitstream compression?

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?

4

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.

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,