MPC5634M_09 datasheet(23/118 Pages) FREESCALE

23 / 118 page

Overview

MPC5634M Microcontroller Data Sheet, Rev. 4

Preliminary—Subject to Change Without Notice

Freescale Semiconductor

— Memory-mapped register in the DSPI

•

Deserialized data is provided as Parallel Output signals and as bits in a memory-mapped register

•

Transfer initiation conditions:

— Continuous

— Edge sensitive hardware trigger

— Change in data

•

Pin serialization/deserialization with interleaved SPI frames for control and diagnostics

•

Continuous serial communications clock

•

Support for parallel and serial chaining of up to four DSPI blocks

1.3.16

eSCI

The enhanced serial communications interface (eSCI) allows asynchronous serial communications with peripheral devices and

other MCUs. It includes special support to interface to Local Interconnect Network (LIN) slave devices. The eSCI block

provides the following features:

•

Full-duplex operation

•

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

•

13-bit baud rate selection

•

Programmable 8-bit or 9-bit, data format

•

Programmable 12-bit or 13-bit data format for Timed Serial Bus (TSB) configuration to support the Microsecond bus

standard

•

Automatic parity generation

•

LIN support

— Autonomous transmission of entire frames

— Configurable to support all revisions of the LIN standard

— Automatic parity bit generation

— Double stop bit after bit error

— 10- or 13-bit break support

•

Separately enabled transmitter and receiver

•

Programmable transmitter output parity

•

2 receiver wake up methods:

— Idle line wake-up

— Address mark wake-up

•

Interrupt-driven operation with flags

•

Receiver framing error detection

•

Hardware parity checking

•

1/16 bit-time noise detection

•

DMA support for both transmit and receive data

— Global error bit stored with receive data in system RAM to allow post processing of errors

1.3.17

FlexCAN

The MPC5634M MCU contains two controller area network (FlexCAN) blocks. The FlexCAN module is a communication

controller implementing the CAN protocol according to Bosch Specification version 2.0B. The CAN protocol was designed to

be used primarily as a vehicle serial data bus, meeting the specific requirements of this field: real-time processing, reliable

operation in the EMI environment of a vehicle, cost-effectiveness and required bandwidth. FlexCAN module ‘A’ contains 64

message buffers (MB); FlexCAN module ‘C’ contains 32 message buffers.

MPC5634M Datasheet(PDF) 23 Page - Freescale Semiconductor, Inc

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