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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
14 years ago

Dave, thanks, JTAG can program well and the nSTATUＳ is high, there is no error at all.

The only problem is about the nCONF_DONE....

When I send the .hex configuration file to the FPGA, should I just send the "valid" data...or send the "valid" data as well as the length information and CRCs?

And how does the FPGA know the transmission is done and it's time to release the nCONF_DONE?

Also, there are many different file formats can be used to configure the FPGA, how does the FPGA know which format I am using？

Hope I can see the answers to such questions in your document soon !!!