Automotive Networking

CAN / CAN FD

An independent CAN node — SOF-aligned bit sampler, bit-de-stuffer, frame-field decoder, and a from-spec CRC-15 (polynomial 0x4599) — written clean-room from Bosch CAN 2.0 / ISO 11898-1…

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shippingGroup Automotive NetworkingStandard Bosch CAN 2.0 A/B, CAN FD (Bosch spec + ISO 11898-1)

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 CAN node — SOF-aligned bit sampler, bit-de-stuffer, frame-field decoder, and a from-spec CRC-15 (polynomial 0x4599) — written clean-room from Bosch CAN 2.0 / ISO 11898-1, plus a passive protocol checker enforcing the bit-stuffing rule (no 6 consecutive equal bits from SOF through CRC) via its own field FSM so the CRC trailer doesn’t false-fire the check. This checker is not hypothetical: run against our own can_fd RTL it surfaced a real bit-stuffing gap, which was fixed and is now formally closed (0 violations, cross-checked by a bounded run-length property).

Key Features

Independent CAN node: SOF-aligned bit sampler, de-stuffer, frame-field decoder, CRC-15 (poly 0x4599), ACK driver
Passive bit-stuffing checker with its own field-tracking FSM (avoids false triggers on the CRC trailer)
Self-checking interop TB: catalog can_fd transmits to the independent node, decode + ACK hard-checked
Track record: this checker caught and helped fix a real stuffing-rule gap in can_fd, since resolved and formally verified

Standards & Compliance

Bosch CAN 2.0 A/B, CAN FD (Bosch spec + ISO 11898-1)

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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