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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

I'm using Stratix II device and met some problems about jtag configuration, please help me :

when jtag operates good, the impedance 's between TCK and ground : 992K. Then, Quartus prompted that "can't access jtag". I measured TCK waveform on osciloscope and see that TCK pulse 's amplitude is reduced, and impedance became 50 ohm. Can Anybody help me ?

Thanks for your attention.