SPC560P54x datasheet(21/105 Pages) STMICROELECTRONICS

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SPC56xP54x, SPC56xP60x

Introduction

104



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



Time stamp based on 16-bit free-running timer



Global network time, synchronized by a specific message



Maskable interrupts



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



High immunity to EMI



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



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



Receive features

–

Individual programmable filters for each mailbox

–

8 mailboxes configurable as a six-entry receive FIFO

–

8 programmable acceptance filters for receive FIFO



Programmable clock source

–

System clock

–

Direct oscillator clock to avoid PLL jitter

1.5.19

Safety port (FlexCAN)

The SPC56xP54x/SPC56xP60x MCU has a second CAN controller synthesized to run at

high bit rates to be used as a safety port. The CAN module of the safety port provides the

following features:



Identical to the FlexCAN module



Bit rate as fast as 7.5 Mb at 60 MHz CPU clock using direct connection between CAN

modules (no physical transceiver required)



32 Message buffers of 0 to 8 bytes data length



Can be used as a third independent CAN module

1.5.20

FlexRay

The FlexRay module provides the following features:



Full implementation of FlexRay Protocol Specification 2.1



64 configurable message buffers can be handled



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



Message buffers configurable as Tx, Rx or RxFIFO



Message buffer size configurable



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



Programmable acceptance filters for RxFIFO message buffers

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