T-SeriesのトピックRe: Watchdog Timer implementation

Watchdog Timer implementation

dheeraj_07 — Wed, 06 May 2026 10:11:38 GMT

We are using an NXP QorIQ T2080 processor and want to implement the internal Watchdog Timer.

Please clarify:

How to enable the internal Watchdog Timer. Any recommended flow?
Whether the Watchdog Timer is core-specific or common for the full processor?
Does watchdog timeout internally reset the processor, or does it assert any external reset/request pin?

Re: Watchdog Timer implementation

June_Lu — Thu, 07 May 2026 07:51:38 GMT

Each core has an internal watchdog timer. Depending on the values programmed in TCR[WRC] and EDBCR0[EDM], four different actions can be taken upon a watchdog timer expiration, including automatic reset of the corresponding core and assertion of RESET_REQ_B.

For more details, please refer to QorIQ T2080 Reference Manual, Section 7.3.6.1 “Watchdog Timer Expiration Out to Platform.”

Thanks.