What's propose of J5 on CW-Lite

1

Hi,
I’ve found J5 on the CW-lite diagram:
image

How I can use it?
What’s propose of that pins?

2

Looking at the FPGA code here, these are signals that relate to the SPI flash (U9) that is not mounted.

Jean-Pierre

3

As J-P mentioned you can use this freely - it does’t have a “use” per-say. This would need you to rebuild the FPGA etc… those were basically just spare signals routed out during the internal development, so there is no “normal” use of them.

4

Thanks Jean-Pierre and Colin,

Do you think I could use it to off load internal storage for samples? For example use it as SDIO or even simple passthrough to other FPGA?

3

5

Slow response as missed this sorry - yes you could! I think there was 9 pins routed out so you could do 8x data + clock for example.

6

Are you working already on something like that? Or did you plan it?