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Altera_Forum's avatar
Altera_Forum
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17 years ago

can't scan jtag chain in customer built board

I have a custom built board with EPM570T100C3N, this is the only programmable device in the board. The other chip is a CY68013A. The USB part of the board works well, but the CPLD cannot programmed b...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

It's pin-by-pin identical to a EPM570T100 production circuit, that I designed. Did you also verify the correct pin numbering (and mounting position) of the TQFP100 package?