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Altera_Forum's avatar
Altera_Forum
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16 years ago

problem with cyclone III and jtag

I would like to put a very serious discussion about using jtag with cyclone III. has cyclone3 less electrical tolerance compared to other FPGA's?????? . we are building a custom board. and t...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

A 3.3V USB Blaster supply doesn't necessarily imply overshoot and vioaltion of the maximum ratings. It depends on the board design, particularly trace impedance and length. But clamping diodes are a good idea in any case.