I have two such boards. Originally both were with XO27000HE chip, but I managed to let magic smoke out of one, so I replaced it. BUt because Farnell didn't have HE version, I used HC instead and adapted VCC from 1.2V to 3.3V. Basically I bricked two Vccx testpoints together and so now I have 3.3V for I/O and core.
New chip seem to be soldered on correctly, but I can't program it through FTDI ( haven't checked ISP cable yet).
When trying to program basic demo ( blinks LEDs), it fails with:
Quote
Device#1 LCMXO2-7000HC: Failed to verify the ID
(Expected: 0x012BD043 Read: 0xFFFFFFFE).
ERROR - Check configuration setup: Unsuccessful.
ERROR: pgr_program failed.
ERROR - Programming failed.
I suspect FTDI's EEPROM might be the possible issue- that it expects HE version.
I noticed that those boards tend to carry different chips- early ones were with XO2-1200HE
Do they have to be tweaked (EEPROM) or should this just work and I screwed something else ?