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How do you set the MSEL pins to 0 or 1? They need to be hard wired to ground or 2.5V, not controlled through a register or a microcontroller, as the FPGA could get a wrong reading on the MSEL pins when it starts up.
Did you try to see with a scope if the FPGA is trying to read the flash when it starts? What are the levels on the nSTATUS, nCONFIG and CONF_DONE signals?
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Hi,
Yes the MSEL is set using jumpers on the board. Basically the pins are jumpered either to gnd (all ground when I do JTAG mode) or to 3.3V I beleive actually.. I'll have to double check this on my board to see the voltage, but I beleive 3.3 is what was required, and I'll be sure to check the voltage on the board and get back on this. Either way though, yes it isn't controlled by any pins from a register or uC.
I'll also have to invest in a scope (been on my wish list for a while now..). Thank you for the suggestions, I'll have to get some proper equipment and get back with results and possible more question! :)
~doddy
Honored Contributor
