Timers & Peripherals

WDT

An independent APB4 watchdog kicker, written clean-room from the WDT register map — not derived from our own wdt RTL — so it functions as a true second source.

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shippingGroup Timers & PeripheralsStandard Generic watchdog-timer verification (no fixed external spec)

Available now — real, tested verification collateral, not a roadmap placeholder.

Verification IP is not safety-rated. These are testbench components — no ASIL target, no FMEDA, no IP-XACT, no safety-mechanism interface. They exist to help you verify a design, not to carry a safety argument. The safety soft-IP catalog is over here.

The deliverable

What you get

Bus-functional model

An independent driver for the protocol, written clean-room from the public specification — not derived from our own RTL, so it is a genuine second source.

Passive protocol checker

A monitor that watches the bus and asserts the spec’s rules continuously, so a violation fails the run where it happens rather than downstream.

Self-checking interop testbench

A one-command testbench that drives the model against real RTL and hard-checks the result — reproduce every claim on day one.

An independent APB4 watchdog kicker, written clean-room from the WDT register map — not derived from our own wdt RTL — so it functions as a true second source. Ships with a passive timing checker that predicts wdt_rst/wdt_win pulse timing from the LOAD value the TB itself wrote, self-re-arming after a correctly-matched timeout since the watchdog free-runs, and a self-checking interop TB proving kick-within-timeout, a real unattended timeout, and windowed early-kick rejection against the catalog’s wdt. Covers the core down-counter and windowed-mode timeout contract today — wwdt‘s extended feature set and configurable reset-pulse-length are a documented roadmap item, not yet built.

Key Features

Independent APB4 kicker: WR/RD/SERVICE (kick)/LOCK task API
Passive timing checker: predicts wdt_rst/wdt_win pulse timing from the TB-issued LOAD value, never reading DUT-internal state
Self-checking interop TB against the catalog’s wdt: kick-within-timeout, real unattended timeout, windowed early-kick fault — all pass
Scope today is the core down-counter + windowed-mode contract; wwdt‘s extended feature set is roadmap, not yet built

Standards & Compliance

Generic watchdog-timer verification (no fixed external spec)

Pairs With

Built to lean against these catalog IPs during integration:

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Deliverables, the file manifest, and licensing terms are shared under a mutual NDA.

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Verification IP is testbench collateral and is deliberately not safety-rated: no ASIL target, no FMEDA, and no IP-XACT descriptor. It carries no functional-safety claim.

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