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Altera_Forum's avatar
Altera_Forum
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14 years ago

about the CONF_DONE in the PS configuration

Dear all, I am trying to configure the Cyclone III device using the Passive Serial mode. In the very beginning, I draw the nCONFIG low, and subsequently the Cyclone III draw the nSTATUS low....the qu...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

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Regardless of that fact, there should be no reason you cannot PS program the part. Check your MSEL settings, eg., check any logic high levels are pulled up to the correct voltage (I think its VCCA).

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I think I may have solved your problem ... you're not going to believe this (or that I remembered seeing this line of code) ...

Download the Altera JRunner software, unzip it, open jrunner.c and you'll find this at line 878 


/*Ignore first 44 bytes in the rbf file for Cyclone device*/

Subtle, eh!

Cheers,

Dave