MPXD2005VMM80R datasheet(16/119 Pages) FREESCALE

16 / 119 page

PXS20 Microcontroller Data Sheet, Rev. 1

Preliminary—Subject to Change Without Notice

Introduction

Freescale Semiconductor

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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

1.5.27

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

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Message buffer header, status, and payload data stored in system memory (SRAM)

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Internal FlexRay memories have error detection and correction

1.5.28

Serial Communication Interface Module (UART)

The UART module with DMA support on this device features the following:

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UART features:

— Full-duplex operation

— Standard non return-to-zero (NRZ) mark/space format

— Data buffers with 4-byte receive, 4-byte transmit

— Configurable word length (8-bit or 9-bit words)

— Error detection and flagging

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Parity, noise and framing errors

— Interrupt driven operation with 4 interrupts sources

— Separate transmitter and receiver CPU interrupt sources

— 16-bit programmable baud-rate modulus counter and 16-bit fractional

— 2 receiver wake-up methods

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LIN features:

— Autonomous LIN frame handling

— Message buffer to store identifier and up to eight data bytes

— Supports message length of up to 64 bytes

— Detection and flagging of LIN errors

MPXD2005VMM80R Datasheet(PDF) 16 Page - Freescale Semiconductor, Inc

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