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Altera_Forum
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14 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
14 years ago

YES, NCONFIG, TDI and TMS are forced low by the FPGA and All voltages are good.

Furthermore, even NCONFIG, TDI and TMS have pull-up resistors.

nCONFIG is connected via pull-up to 3.3V and TDI ,TMS are connected through pull-up to 2.5V