MAC7200 datasheet(181/976 Pages) FREESCALE

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MAC7200 Microcontroller Family Reference Manual, Rev. 2

Freescale Semiconductor

103

Chapter 9

Device Memory Map

This section describes the memory map of the MAC72xx after reset, in the various possible chip modes.

For more details on selecting chip modes, please refer to Chapter 2, “Modes of Operation”. The memory

map of the device immediately following reset is different based on the mode of operation that has been

selected, but is largely re-mappable following reset. It is possible to re-map the flash main array and

shadow block, the SRAM and the external bus interface using the AAMR register in the MCM module,

but not the ARM7 exception table, which is fixed at $0000 0000 to $0000 001F, Figure 9-1 shows the

device memory map at reset in each of the various device modes.

Figure 9-1. MAC72xx Memory Map Overview

Normal

Single

Chip

Secured

Single

Chip

Normal

Expanded

Secured

Expanded

Normal

Bootload

Secured

Bootload

Lockout

Recovery

$0000 0000

Flash

Main

Array

Flash

Main

Array

FlexBus

Shadow

Block

Shadow

Block

BAM

$00F0 0000

Shadow

Block

Shadow

Block

$2000 0000

FlexBus

Flash

Main

Array

Flash

Main

Array

Flash

Main

Array

Flash

Main

Array

$20F0 0000

Shadow

Block

Shadow

Block

Shadow

Block

Shadow

Block

$4000 0000

SRAM

$6000 0000

$8000 0000

$A000 0000

BAM

$C000 0000

$E000 0000

Peripheral

Bus

Peripheral

Bus

Peripheral

Bus

Peripheral

Bus

Peripheral

Bus

Peripheral

Bus

Peripheral

Bus

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