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Automotive IP: CAN, CAN-FD, LIN and FlexRay protocol controllers

Silvaco's automotive IP gives your SoC team synthesizable CAN, CAN FD, LIN and FlexRay controllers, proven in use under ISO 26262 and past a billion units shipped.

Talk to an IP specialist Download the IP catalog (PDF)

Four controllers for the vehicle network

Start from the bus your SoC has to join: high-speed CAN FD, multi-node CAN, deterministic FlexRay or low-cost LIN.

  • FlexCAN controller

    Part 70017 · 25k to 61k gates. CAN FD at up to 8 Mbit/s with 64-byte payloads, on a CAN 2.0B Full-CAN base. Pick 16 to 128 mailboxes. ECC corrects memory reads, and the node sleeps until bus activity or a matching frame wakes it. Connects over IPS or APB.

  • MultiCAN controller

    Part 70034 · 34k to 87k gates. One to six CAN 2.0B Full-CAN nodes, each programmable up to 1 Mbps, with Twin CAN and optional TTCAN Level 2. Link any of up to 256 message objects into a gateway, and frames pass between two CAN buses on their own.

  • FlexRay controller

    Part 70018 · 76k to 141k gates. FlexRay 2.1 Revision A over AMBA AHB. Run one 10 Mbit/s channel to hold cost down, two independent channels for 20 Mbit/s, or two redundant channels when reliability comes first.

  • LINFlexD controller

    Part 70052 · 22k to 23k gates. LIN 1.3 through 2.2, master or slave, at up to 20 kbit/s. A UART mode runs to 25 Mbit/s, so the same block doubles as a serial port. IPS and APB interfaces.

  • Functional safety

    Each controller holds Proven in Use status under ISO 26262 Part 8, earned in production vehicles. The CAN controllers meet ISO 11898-1, and the family is ready for ISO 26262 functional-safety work, aimed at ASIL-B applications.

  • Deliverables

    You get synthesizable RTL, a testbench with test suites, user and integration guides, and synthesis constraints or scripts. Each controller comes in commercial, industrial or automotive grade.

Where this automotive IP runs

  • Steer-by-wire and brake-by-wireFault-tolerant messaging on ASIL-B control paths
  • Advanced chassis controlFlexRay's fixed timing where message latency can't drift
  • Distributed and zonal E/E architecturesClassic and flexible data-rate CAN, sized to each zone's traffic
  • Low-cost actuators, switches and buttons over LINLIN 2.x nodes where CAN would be overkill

Compare the four controllers

Part number Controller Description Grades ISO 26262 Gate count
70052LINFlexDLIN 1.3, 2.0, 2.1 and 2.2, IPS / APB interfaceC, I, AProven in Use22k–23k
70017FlexCANCAN 2.0B, Full-CAN with CAN-FD, IPS / APB interfaceC, I, AProven in Use25k–61k
70034MultiCANCAN 2.0B, Full-CAN, Twin CAN, TTCAN, IPS / APB interfaceC, I, AProven in Use34k–87k
70018FlexRayFlexRay 2.1, AMBA AHBC, I, AProven in Use76k–141k

C, I and A are commercial, industrial and automotive grades. Configuration sets the exact gate count. A FlexRay controller with 4 message buffers comes in at 76,720 gates; one with 252 reaches 140,997.

What the field record shows

Before you rest a safety case on third-party IP, check how it has held up in production.

  • 1 billion+units shipped worldwide
  • Hundreds of millionsin production vehicle platforms
  • ISO 26262 Part 8Proven in Use, all four controllers
  • ISO 11898-1compliant CAN and CAN FD
  • ASIL-Bsteer-by-wire, brake-by-wire, chassis control

  • Catalog · PDFSummer 2026

    IP product selection guide

    All four controllers with their grades and gate counts, beside the AMBA and I3C soft IP.

  • Product brief · PDF

    FlexCAN Controller

    CAN FD features, mailbox options and configuration parameters.

  • Product brief · PDF

    MultiCAN Controller

    Multi-node CAN, TTCAN Level 2 and gateway support.

  • Product brief · PDF

    FlexRay Controller

    Channel options, configuration, and gate count by message buffers.

  • Product brief · PDF

    LINFlexD Controller

    LIN and UART modes, DMA and deliverables.

Licensing automotive IP for your next SoC?

Tell an IP specialist which buses the chip carries and the ASIL target it has to meet. You'll settle licensing, evaluation and foundry availability in one conversation, plus the safety documentation your ISO 26262 case needs.

Talk to an IP specialist Download the IP catalog (PDF)

Questions about the automotive controllers

It's the controller logic that puts an automotive SoC on the vehicle's buses: CAN, CAN FD, LIN and FlexRay. Silvaco licenses its automotive IP as synthesizable RTL. The FlexCAN, MultiCAN, FlexRay and LINFlexD controllers already run inside distributed and zonal vehicle architectures in production cars.

Part 8 of ISO 26262 lets a component earn functional-safety credit from its service history in comparable use. New development evidence isn't the only route. Silvaco's four controllers take this one, backed by their service in production vehicle platforms worldwide.

ISO 26262 grades automotive safety functions from ASIL A to ASIL D, and ASIL-B is the second of those four levels. Silvaco builds these controllers for ASIL-B use cases such as steer-by-wire. Before you settle your ASIL decomposition, ask an IP specialist which safety documentation ships for your program.

Classic CAN 2.0B runs at up to 1 Mbps with 8-byte payloads, and CAN FD raises that to 8 Mbit/s and 64 bytes. LIN is a low-cost bus at up to 20 kbit/s for actuators, switches and buttons. FlexRay is deterministic, at 10 Mbit/s per channel, with dual channels for bandwidth or redundancy.

Plan on 22k to 23k gates for LINFlexD, 25k to 61k for FlexCAN, 34k to 87k for MultiCAN and 76k to 141k for FlexRay. Where you land in each range depends on configuration: how many mailboxes, message objects or message buffers you build in. Size the options first, and the area follows.

Yes. The controllers have shipped in over a billion units worldwide, and hundreds of millions of those run in production vehicle platforms. Each one counts as Proven in Use for ISO 26262, and MultiCAN has already gone into several production devices.

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