Programmable Devices
CPLDs, FPGAs, SoC FPGAs, Configuration, and Transceivers
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JTAG communication error

Altera_Forum
Honored Contributor II
‎11-19-2007 08:31 PM
1,033 Views

I have been using the JTAG commands: open_device -hardware <hardware> -device <device> for a while. Suddenly it stopped working with the message: 

 

JTAG communication error detected. 

It can be caused by the hardware failure or signal integrity in the JTAG chain. Try to restart. 

 

However, programming the device is okay. It's when open_device is called. 

 

Any idea?
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Altera_Forum
Honored Contributor II
‎11-19-2007 08:55 PM
309 Views

Never mind. I forgot to put my VJI design as the top level.

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