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Altera_Forum
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15 years ago

Configuration time of Cyclone 3

Hi- I have a design that utilizes a Cyclone 3 (configured in active serial mode using fast POR). My design is a daughter card that connects to an existing 5V system. In debugging I realized t...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

I just had a problem - with Config_done.....my system

reset i/o pin was de-asserted prior to Config_done being released

which caused all i/o pins (including inputs) go high (for around 200ms)

I needed a signal to be low during that time (an i/o) pin.....

Make sure that config_done goes high before system reset signal is goes inactive. .....