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Altera_Forum
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14 years ago

Using SignalTap II without JTAG?

Hello, I have board where I can't connect to the FPGA's JTAG pins. Nevertheless, it would be nice to be able to use the SignalTap II tool to have a look what is going on inside the FPGA - a Cy...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

No, I am afraid I can't change the board, so interfacing to the FPGA's JTAG through "neighbouring" pins is not possible.

It's a shame that SignalTap II is not more flexible on the PC communications interface... at least I can't think of a good reason why there should not be an option to have the SignalTap II's interface ports be accessible by my top-level module instead of hard-wiring them to the JTAG port.

I have seen there is a Virtual JTAG megafunction, could that be an option to access the "real" JTAG pins from a FPGA module?