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Altera_Forum
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16 years ago

Stratix III 's JTAG Chain Problem

Dear All, I have problem in JTAG chain of Stratix III. I have a board which uses 2 FPGAs Stratix III (EP3SL200H780C4N). They are connected in JTAG chain. I also send the JTAG chain to you for r...
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Altera_Forum
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16 years ago

Failure of JTAG operation in dependence on activity of other design parts can be a problem of crosstalk between JTAG and other on board signals. In this case, you should check for possible interferences with the nconfig input.

A power supply drop would be another possible explanation.