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Altera_Forum
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9 years ago

jtag problem in max2

Daer Sir I am doing boundary scan testing. My jtag chain configuration is attach. I am not able to detect fault. Can anyone help me. best regards Nikhil
Altera_Forum's avatar
Altera_Forum
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9 years ago

We're not going to be able to help you here unless you have more information on what's in the EPM240, and you say you don't have the source code. There are many ways in which the JTAG could be multiplexed in the CPLD, we can't guess how it's been done in your case. There is no standard documentation on multiplexing JTAG using an EPM240.

I assume this setup has worked in the past? If this is the case then I suggest you should be looking for some assembly fault that's causing the setup not to work.

If this is a new rig then, without a good understanding of how the EPM240 design works, I don't think we're going to get very far.

Cheers,

Alex