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Altera_Forum
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15 years ago

Cyclone II AS config issue

Using the AS configuration scheme, nCSO does not go low after POR or after forcing nCONFIG low. Programming the EPCS128 configuration device is successful. BUT, after power up or after forcing nCONFI...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

This is a application specific board, not an eval board. I followed all recommendations in the Altera Literature. The FPGA is a Cyclone III not a cyclone II as in the thread heading. the MSEL pins are at 0011 for AS config 2.5, 3.0. My vccio are at 3.0v except for a bank that is connected to DDR.