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Alkesh_shah's avatar
Alkesh_shah
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14 days ago

Hard reset with USB-Blaster and Quartus

Hello there, I am working on few JTAG operations using Quartus prime standard (v24) with USB-Blaster (cable). After every operation I need to hard reset to perform the next operation. Unless Hard-r...
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Alkesh_shah's avatar
Alkesh_shah
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13 days ago

More details added with another discussion "Hard Reset Required After Each Boundary Scan Operation".

  • FakhrulA_altera's avatar
    FakhrulA_altera
    Icon for Regular Contributor rankRegular Contributor
    7 days ago

    Hi Alkesh,


    Hard reset is not required by design. The issue is the chain being left in a test state. After each scan, send a TAP reset (TMS high for 5 TCK), load BYPASS for all devices, return to Run‑Test/Idle, and do a short DR flush. If your device is Stratix 10, run the MISCCTRL enable once before boundary‑scan. Quartus Programmer is not a full boundary‑scan tester, so you must manage these states yourself or use a dedicated BST tool.
     

    Reference: Intel MAX 10 JTAG Boundary‑Scan Testing User Guide : explains enabling/disabling BST, using BYPASS/SAMPLE, and parking in Run‑Test/Idle to avoid ending in EXTEST or HIGHZ.
    https://cdrdv2-public.intel.com/667087/ug_m10_jtag-683210-667087.pdf

    • Alkesh_shah's avatar
      Alkesh_shah
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      6 days ago

      I am executing it using the tcl script. Can you help me with the tcl command to do so.

      I am on Quartus Prime Standard version24.01. Attached are the commands available. A quich help on which one to use would be really helpful.