New Contributor
Regular ContributorHi,
To boot from flash, you will need to select "Active Serial Configuration Scheme" and generate JIC bitstream from SOF bitstream and have it programmed into the flash.
Also, any idea at which stage the configuration fails at? You may refer to the user guide below and probe the appropriate pin,
New Contributorthanks for response.
The nStatus pin goes low in middle of config process.
So we can program that flash via jic without any problem. The programmer has verify enabled and reports everything ok.
Then we power cycle and watch the nStatus and config pins. The nStatus goes low about 1/4 of the way through loading from flash.
We measured time it takes from power on to config done on a working board which is 37 seconds using 12 Mhz clock and only 1 bit. We are using active serial.
So the same file and settings the nStatus goes low around 10 seconds after start.
same exact file works on an old board but not this one. Same fpga, same flash chip.
We also connected the nconfig to a push button so that we can initiate the config process after a long time after power on to rule out power supply issue.
Same thing happens.
