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Freescale Semiconductor
Application Note
Document Number: AN3271
Rev. 1, 05/2007
Contents
© Freescale Semiconductor, Inc., 2006, 2007. All rights reserved.
1 Introduction
Freescale Semiconductor offers two key standalone
FlexRay communication controllers — MFR4200 and
MFR4310. These communication controllers are
implemented with different FlexRay protocol
specifications, version 1.1 and 2.1a respectively. Both
devices are interoperable and can communicate with
each other in a FlexRay network. This application note
describes the differences between interoperability,
compatibility, and gives an example of hardware and
software configurations to help with migrating from the
MFR4200 to MFR4310.
2Objective
The aim of the document is to detail the differences
between the MFR4200 and the MFR4310 and to provide
hardware and software configuration examples to
demonstrate interoperability and successful migration
from MFR4200 to MFR4310. The information contained
can help you quickly migrate from MFR4200 to a fully
functional MFR4310 FlexRay node or complete
network.
1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2 Objective . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
3 Tasks to Build a FlexRay Cluster . . . . . . . . . . . . . . . . . . 2
4 MFR4200 Interoperability . . . . . . . . . . . . . . . . . . . . . . . . 3
5 MFR4200 Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . 4
5.1 Practical Impact of Differences . . . . . . . . . . . . . . . . 4
5.2 MFR4310 Feature Changes . . . . . . . . . . . . . . . . . . 4
5.3 Buffer Access Comparison . . . . . . . . . . . . . . . . . . . 5
5.4 Pinout Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
5.5 MFR4200/4310 AMI Layout Considerations . . . . . . 9
5.6 Bus Timing Comparison . . . . . . . . . . . . . . . . . . . . . 9
6 Hardware Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6.1 MFR4200/MFR4310 HCS12 Interface . . . . . . . . . 10
6.2 MFR4200/MFR4310 AMI Interface . . . . . . . . . . . . 11
7 Software Configuration Examples . . . . . . . . . . . . . . . . 11
8 Conclusions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
9 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Migrating from MFR4200
to MFR4310
by: David Paterson
MCD Applications, East Kilbride, Scotland
