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Altera_Forum
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18 years ago

Cyclone II PS configuration problem

Hi all, I am trying to configure 3 EP2C20 with 3 EPC2 device. The EPC2 device was configured with JTAG. So when the board power up the EP2C20 should be configured by the EPC2. The connec...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
18 years ago

Hi

I hope the cascadded conecction is perfect!!..

well I found this on Altera Cyclone handbook.. just check this up

The enhanced configuration devices’ and EPC2 devices’ OE and nCS pins have internal programmable pull-up

resistors. If internal pull-up resistors are used, external pull-up resistors should not be used on these pins. The

internal pull-up resistors are used by default in the Quartus II software. To turn off the internal pull-up resistors,

check the Disable nCS and OE pull-ups on configuration device option when generating programming files.

Cheers