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Using Xilinx Tools Forum Error Scanning JTAG Chain
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Error Scanning JTAG Chain

Former Member
Former Member over 9 years ago

If I connect the Zedboard via JTAG I get the following error in XMD:

XMD% connect arm hw
Error:No devices detected while scanning the JTAG chain
ERROR: Failed to Scan JTAG Chain
        Unknown Error

I followed the instructions in:

ZedBoard Configuration and Booting Guide V 1.1 Aug 2012

setting all the MIO jumpers to ground.

I have also tried a Xlinx PLatform Cable and get the same error.

I am running Xilinx 14.3 (Windows 7/64) which works with an ML507 board. The board's JTAG device is installed (Driver: FTDI v2.8.24.0) and this is detected by Adept as device "Zed":

===== Digilent Adept  Rev 2.2.0 =====
Loading board information...
Warning:  Could not find specific board information
Initializing Scan Chain...
Default information loaded.
Initialization Complete.
It then says "No Devices identified"

This would suggest both JTAG programmers and software are working, but the problem is on the board with the JTAG chain. Please help. Thanks.

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  • Former Member
    0 Former Member over 9 years ago

    Fixed! Turns out this is a problem due to the FMC break out board being connected. If the HW-FMC-105-DEBUG board is not connected, everything works fine! Would anyone like to explain to me why this is?

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  • Former Member
    0 Former Member over 9 years ago

    Fixed! Turns out this is a problem due to the FMC break out board being connected. If the HW-FMC-105-DEBUG board is not connected, everything works fine! Would anyone like to explain to me why this is?

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