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Altera_Forum's avatar
Altera_Forum
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8 years ago

[JTAG] zrTech Cyclone IV Board JTAG Chain issues

Hello Forum,

I'm using:

- Cyclone IV e3

- ALTERA USB Blaster Rev. C

- Quartus Prime Lite

When I hit Auto Detect in the Programmer, it says there is something wrong with the JTAG chain and takes me to the debugger.

Next I hit "Test JTAG Chain" and the session log is attached.

I can't understand what I'm doing wrong - I've checked the IDE cable and that seems fine. I've checked the power pins and they are correct. Please help.

Session log:

!Error: JTAG chain problem detected

!Error: TDI connection to the first detected device UNKNOWN_FFFFFFFD might be shorted to GND

!Error: The TCK and TMS connections to the device before the first detected device UNKNOWN_FFFFFFFD might have a problem

!Info: Detected 2 device(s)

!Info: Device 1: UNKNOWN_FFFFFFFD

!Info: Device 2: 10CL006(Y|Z)/10CL010(Y|Z)/..

2 Replies

  • Jrynk's avatar
    Jrynk
    Icon for New Contributor rankNew Contributor

    The same problem. Did you fix that and how?

  • DAlth's avatar
    DAlth
    Icon for New Contributor rankNew Contributor

    Did you guys find a solution? Experiencing the same problem here.