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Programm FPGA via JTAG

Added by Dominique Lytwyn almost 6 years ago

I have the MityDSP-PRO Board.

Whenever I program the FPGA via JTAG and then want to debug the DSP via JTAG I got an error: " Trouble Reading Memory Block at 0x80514c"...

When I try again to debug the DSP I got an error: "Error connecting to the target".

It doesn't care which application I programm to the FPGA.

When I don't progam the FPGA I can debug the DSP without problems.

What happens when I write program to the FPGA via JTAG?

Is is actually possible to programm the FPGA via JTAG?

Thank you


Replies (2)

RE: Programm FPGA via JTAG - Added by Michael Williamson almost 6 years ago

Make sure that your FPGA bitstream generation options float the unused IOB's. By default they are pulled down. If you don't have active assignments for stuff like the watchdog reset control, the NMI, the EMIFA bus hold signals, etc., you can really irritate the DSP.

This is a common issue.

-Mike

RE: Programm FPGA via JTAG - Added by Dominique Lytwyn almost 6 years ago

Mike,

thank you. You solved my problem. With the float option the dsp doesn't stuck.

Thank you

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