MAC7200 datasheet(583/976 Pages) FREESCALE

Part #	MAC7200

Description	MAC7200 Microcontroller Family Reference Manual

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Manufacturer	FREESCALE [Freescale Semiconductor, Inc]

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The Generic FlexCAN2 Module

MAC7200 Microcontroller Family Reference Manual, Rev. 2

Freescale Semiconductor

505

28.1.8.2

Message Buffer Initialization

Before being used, all FlexCAN message buffers must be initialized by writing ‘0’ into all locations. Since

the FlexCAN Message Buffer Memory does not have ECC, there is no requirement to initialize the

memory in a specific manner.

28.2

The Generic FlexCAN2 Module

The FlexCAN module is a communication controller implementing the CAN protocol according to the

CAN 2.0B protocol specification.

28.2.1

Block Diagram

A general block diagram is shown in Figure 28-1, which describes the main sub-blocks implemented in

the FlexCAN module, including two embedded memories, one for storing Message Buffers (MB) and

another one for storing Rx Individual Mask Registers. On the MAC72xx, there are 32 Message Buffers for

each FlexCAN module. The functions of the sub-modules are described in subsequent sections.

MAC7200 Datasheet(PDF) 583 Page - Freescale Semiconductor, Inc