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Visitor 19810112
Visitor
8,047 Views
Registered: ‎12-16-2007

Using Chipscope, Reprots "ERROR: Failed reading JTAG Instruction Register"

When using Chipscope, the Chipscpe reports below info:
ERROR: Failed reading JTAG Instruction Register
ERROR: Configuration failed.
INFO: Found 0 Core Units in the JTAG device Chain.
 
But, i can get correctly IDCODE and USERCODE of the FPGA with my usb cable, and using this usb cable downloading bit-file also succeed on the ISE.
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Visitor forsa
Visitor
3,164 Views
Registered: ‎01-24-2011

Re: Using Chipscope, Reprots "ERROR: Failed reading JTAG Instruction Register"

Same problem here. Anyone found the reason?

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Visitor jn84a
Visitor
3,158 Views
Registered: ‎04-10-2011

Re: Using Chipscope, Reprots "ERROR: Failed reading JTAG Instruction Register"

What devices are in the JTAG chain? What do you mean by "downloading bit-file also succeed on the ISE"? Does this mean you have tried impact without any success?

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