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Automotive Networking

Every link in your zonal vehicle network has a job, and the job picks the bus. Silvaco's automotive networking IP covers four: CAN FD for high-throughput traffic, MultiCAN for gateways, FlexRay for deterministic control and LIN at the low-cost edge. The CAN controllers comply with ISO 11898-1. All four are functional-safety ready under ISO 26262, and more than a billion units have shipped.

Request the automotive networking IP datasheet Download the IP catalog (PDF)

Match the controller to the link

A vehicle network mixes buses by what each link has to carry. Start there, not with the part number.

  • High-throughput CAN traffic on FlexCAN

    CAN 2.0B and CAN FD in one controller, with CAN FD frames reaching 8 Mbit/s and 64-byte payloads. Idle nodes sleep in a low-power mode until the bus goes active or a matching frame arrives.

  • Gateways between CAN buses with MultiCAN

    Up to six CAN 2.0B nodes in one controller, each running to 1 Mbit/s. Set up as a gateway, MultiCAN forwards frames from one CAN bus to another automatically. TTCAN adds time-triggered messaging.

  • Deterministic control on FlexRay

    FlexRay 2.1 over AMBA AHB, for control traffic that has to arrive on a fixed schedule. Need bandwidth? Two independent channels carry 20 Mbit/s. Need fault tolerance? Run the pair redundant at 10 Mbit/s each.

  • Low-cost edge nodes on LINFlexD

    LINFlexD runs LIN 1.3 to 2.2 as master or slave, up to 20 kbit/s. Use it for actuators, switches and buttons that don't justify a CAN node.

Controllers by network role

Configuration moves you through each gate range: FlexRay spans about 77k gates at 4 message buffers to 141k at 252.

Network role Controller Protocol and interface ISO 26262 Gate count
High-throughput CAN trafficFlexCAN, 70017CAN 2.0B, Full-CAN with CAN FD, IPS / APBProven in Use25k–61k
Gateways between CAN busesMultiCAN, 70034CAN 2.0B, Full-CAN, Twin CAN, TTCAN, IPS / APBProven in Use34k–87k
Deterministic controlFlexRay, 70018FlexRay 2.1, AMBA AHBProven in Use76k–141k
Low-cost edge nodesLINFlexD, 70052LIN 1.3, 2.0, 2.1 and 2.2, IPS / APBProven in Use22k–23k

Under ISO 26262 Part 8, all four carry Proven in Use status. It rests on hundreds of millions of units in production vehicle platforms.

Vehicle functions it's built for

  • Steer-by-wire, brake-by-wire and chassis controlASIL-B functions where communication has to survive a fault
  • CAN and CAN FD networksFlexCAN and MultiCAN, built to ISO 11898-1
  • Zonal and distributed E/E designsMultiCAN gateways pass frames between the CAN buses each zone runs
  • Actuators, switches and buttonsLINFlexD nodes on LIN 2.x, where cost decides the bus
  • Mixed data-rate trafficFlexCAN optimizes traffic by running classic and CAN FD frames on one bus

Scope the network before tape-out

Which buses does your SoC join, and at what ASIL level? Start with those two answers. You'll sort out the ISO 26262 safety documentation, the evaluation and the license for your automotive networking IP with one team.

Request the automotive networking IP datasheet Request a technical briefing on conformance and functional safety deliverables

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