Forum Discussion

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

cyclone IV configuration: VCCIO8 connection

I’m currently using an EP4CE6F17I8LN on a PCB in an AS configuration mode (EPCS4 PROM) and I’m experiencing some issues with its configuration (device stays in POR with nSTATUS low). In my circuit im...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

--- Quote Start ---

I'm just wondering if the in-rush current at power-up is not too large to be handled by only one wire-bond.

--- Quote End ---

For debugging purposes, you can defeat the "All power rails must come up within xxx ms, and must rise monotonically" requirement by holding nCONFIG low during power-on. Then let it go high, and it should attempt configuration from that point.

Cheers,

Dave