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Altera_Forum
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17 years ago

Jtag problem

Here we go again! For a very simple project i used a MAX7032S. Suggested pullup an pulldown are used at jtag pins, connections kept as short as possible and large ground path as well. Only way...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

Have you done some soldering rework on the two bad boards? It is a very typical situation that after a soldering rework, if the soldering paste has not correctly washed with a solvent, the JTAG port suffers from parasitic low impedance paths which destroy the signals.