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Altera_Forum's avatar
Altera_Forum
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10 years ago

program/erase MAX II with TDO disabled?

I think I messed up and bricked my board, but I'm open to ideas. Here's the scenario: My board uses the EPM240 in the 100-pin micro BGA package. There are no other JTAG devices in the chain, ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
10 years ago

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have you asked board's vendor?

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I am the board's vendor.

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if it possible put you GPIO in tristate.

or write your own driver that provide expected values from TDO line to software. So you should return to the first sentence.[/i]

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Working with what I have, I can't figure a way to put the GPIO lines in tristate without also disabling the JTAG lines. Worst case scenario is I have to send the board out to have the CPLD replaced, but I'm hoping to avoid that.