Features

PXS20 Product Brief, Rev. 1

Freescale Semiconductor

19

— Extended data and remote frames

— 0 to 8 bytes data length

— Programmable bit rate as fast as 1Mbit/s

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32 message buffers of 0 to 8 bytes data length

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Each message buffer configurable as receive or transmit buffer, all supporting standard and

extended messages

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Programmable loop-back mode supporting self-test operation

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3 programmable mask registers

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Programmable transmit-first scheme: lowest ID or lowest buffer number

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Time stamp based on 16-bit free-running timer

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Global network time, synchronized by a specific message

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Maskable interrupts

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Independent of the transmission medium (an external transceiver is assumed)

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High immunity to EMI

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Short latency time due to an arbitration scheme for high-priority messages

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Transmit features

— Supports configuration of multiple mailboxes to form message queues of scalable depth

— Arbitration scheme according to message ID or message buffer number

— Internal arbitration to guarantee no inner or outer priority inversion

— Transmit abort procedure and notification

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Receive features

— Individual programmable filters for each mailbox

— 8 mailboxes configurable as a 6-entry receive FIFO

— 8 programmable acceptance filters for receive FIFO

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Programmable clock source

— System clock

— Direct oscillator clock to avoid FMPLL jitter

2.5.27

FlexRay

The FlexRay module provides the following features:

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Full implementation of FlexRay Protocol Specification 2.1 Rev. A

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64 configurable message buffers can be handled

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Dual channel or single channel mode of operation, each as fast as 10 Mbit/s data rate

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Message buffers configurable as transmit or receive

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Message buffer size configurable

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Message filtering for all message buffers based on Frame ID, cycle count, and message ID

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Programmable acceptance filters for receive FIFO