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Altera_Forum's avatar
Altera_Forum
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12 years ago

cyclone 3 and odd pin behavior

Using EP3C40F324I7N andEPCS16 in 'jic' setup. 'appears' only one pin, outputting a clock, D7, when programmed by the EPCS16, outputs a 'high' instead of a clock. (as apposed to low for un-assigned pi...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

Then I must question whether the .sof you are using to generate the .jic is the same file as you are using when programming directly.

Assuming it is - are you happy that you are testing the device in the same way when programming in each way? Is there logic in the device to gate the clock under certain conditions? Is it being gated when programmed from EPCS and not when programmed directly - i.e. is this happening by design?

Regards,

Alex