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Altera_Forum
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16 years ago

JTAG BST Cyclone III

Hi, Can anyone help understand this condition for nconfig "The IEEE Std 1149.1 BST circuitry for these Altera devices are dedicated and enabled upon device power-up. You can use this IEEE S...
Altera_Forum's avatar
Altera_Forum
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16 years ago

We did actually run into this issue with Cyclone II. I can tell you that the user manual is indeed correct. Fortunately we new about this ahead of time and connected the nConfig pin to our BST header so we could drive it low.

The other alternative we had considered is the suggestion FvM is giving. Load a useles/harmless FPGA image into the device, then run your BST.

Jake