Feature list

• Conformance with the FlexRay™ protocol specification version 2.1

• Flexible functional configuration and monitoring for software

  • Configuration of message buffers with different payload lengths possible

  • Up to 128 message buffers

  • Each message buffer can be configured as receive buffer, as transmit buffer, or as part of the receive FIFO (first in first out)

  • Flag indicating which input buffer is currently accessible by the host

• Transmit frames according to the protocol

  • Data rates of up to 10 Mbit/s on each channel

  • Filtering for slot counter, cycle counter, and channel

• Receive frames according to the protocol

  • Data rates of up to 10 Mbit/s on each channel

  • Filtering for slot counter, cycle counter, and channel

• Data storage of 8 Kbyte Message RAM available for message buffers and receive FIFO (first in first out)

  • Storage of for example 128 message buffers with a maximum 48 byte data field or up to 30 message buffers with 254 byte data sections

  • One configurable receive FIFO

  • Host access to message buffers through input and output buffer

    • Input buffer holds message to be transferred to the Message RAM

    • Output buffer holds message read from the message RAM

  • Four input buffers for building up transmission frames in parallel

  • Automatically delayed read access to Input Buffer Command Request (IBCR) register if a data transfer from the input shadow buffer to the Message RAM (initiated by a previous write access to the IBCR) is ongoing

  • Automatically delayed read access to Output Buffer Command Request OBCR register if a data transfer from the message RAM to the output shadow buffer (initiated by a previous write access to the OBCR) is ongoing

• Flexible interrupt structure generation available

  • Maskable module service requests

  • Service request lines

• Time management functions

  • Synchronization to the cluster according to the protocol

  • External clock output

• Network Management support