Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

Cyclone IV goes into an undefined state

:( I'm using EP4CE10E22C8, in AS MODE. I have +1.2V supply for VCCINT and VCCD_PLL1,2; +2.5V for VCCA1,2, and +3.3V for all VCCIOs. MSEL2 and MSEL0 grounded. MSEL1 is connected to +2.5V. All...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

Do you want to say, the FPGA is working correctly if VCCINT isn't delayed? If it's working neither, I expect an elementary hardware problem, e.g. unconnected exposed pad.