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Alkesh_shah's avatar
Alkesh_shah
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1 month 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
Icon for New Contributor rankNew Contributor
1 day ago

Hello There,

Can you please help me with this issue?

By any chance can I have the access to USB_Blaster drivers to control the TMS pin? Is there any command that I can use. I see even with Quartus Prime Standard version (GUI application), I am not able to reset the TAP-State.

Awaiting the response from your end.

BR,
Alkesh

FakhrulA_altera's avatar
FakhrulA_altera
Icon for Regular Contributor rankRegular Contributor
1 day ago

Hi Alkesh,

A hard reset shouldn’t be required. This usually happens because the JTAG TAP or a device is left in a test state. Between scans, reset the TAP, park all devices in BYPASS, return to Run‑Test/Idle, and do a short DR flush. Avoid ending in EXTEST or HIGHZ. If your device is Stratix 10, enable boundary‑scan once via the MISCCTRL instruction. Quartus Programmer isn’t a full boundary‑scan tester, so you need to manage these states or use a dedicated BST tool.
Reference: Intel MAX 10 JTAG Boundary‑Scan Testing User Guide
Intel® MAX® 10 JTAG Boundary-Scan Testing User Guide

What device you are using btw?

Regards,
Fakhrul