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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

Hi,

I have a problem of programming the device epm7128sti100 with usb-blaster,

I made prototype board of device programming, I/O pins except JTAG ports are open. If I operate progmammer, it's display "unrecognized device" and the output waveform of TDO is unstable. The output is appeared first, but disappeared several operating.

Please help me.

Thanks.