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Altera_Forum's avatar
Altera_Forum
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16 years ago

Stratix II Configuration Problem

Hi, We are having some issues configuring a stratix II FPGA. From quartus we can successfully program the flash from Quartus but the FPGA does not always configure correctly when power is applied....
Altera_Forum's avatar
Altera_Forum
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15 years ago

I'm seeing the same problem with a Cyclone II. Part doesn't configure at power up. Everything checks out and works with the USB Blaster.Sits there retrying continuously. When I tap the DONE line with a scope probe, part springs to life.

Have probed lines; the PCB layout is fine, and the tracks are about 2" long. Good signal integrity at the Cyclone II. Have tried decreasing pullup value on DONE, adding a small capacitor, etc....

-------------revised post ------ FIXED IT--------------

Was originally using EPCS1 with compressed bitstream. Changed to using EPCS4 and uncompressed stream. Worked first time.

Was using Quartus 9.1 build 222, EP2C8Q208C8