MAC7200 datasheet(184/976 Pages) FREESCALE

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Normal Single Chip Mode

MAC7200 Microcontroller Family Reference Manual, Rev. 2

106

Freescale Semiconductor

•

External Bus Interface is enabled

•

Flash main array access is enabled

•

Shadow Block access is enabled

•

Boot from the Flash main array

Table 9-1 shows the device memory map of the MAC72xx in Normal Single Chip Mode after Reset.

After Reset, the memory map may be re-mapped using the AAMR register in the MCM module. The

allowed combinations are shown in Table 9-2. The Peripheral Bus space is always fixed at $FC00 0000,

and is not re-mappable.

Table 9-1. Device Memory Map in Normal Single Chip Mode (After Reset)1

1. This reset memory map equates to a reset value of $f0d0 0b98 in the AAMR register in the MCM module.

Address

Module

Size

(Bytes)

$0000 0000 - $0007 FFFF

$0000 0000 - $0004 FFFF

Flash main array2 (MAC72x1)

Flash main array2 (MAC72x2)

2. The Exception Vector Table is located at $0000 0000 - $0000 001F in the Flash main array.

512K

320K

$00F0 0000 - $00F0 7FFF

Shadow Block

32K

$0008 0000 - $1FFF FFFF

Reserved

~511M

$2000 0000 - $3FFF FFFF

External Bus Interface

512M

$4000 0000 - $4000 7FFF

$4000 0000 - $4000 4FFF

SRAM3 (MAC72x1)

SRAM3 (MAC72x2)

3. The SRAM is mirrored across the entire 512MByte address range on a 32K boundary. Please refer to

Section 9.10, “SRAM Memory Map”.

32K

20K

$4000 8000 - $FBFF FFFF

Reserved

~3008M

$FC00 0000 - $FFFF FFFF

Peripheral Bus modules

64M

Table 9-2. Allowed Memory Maps in Normal Single Chip Mode

$0000 0000

$2000 0000

$4000 0000

AAMR Register

External Bus

Flash Main Array

SRAM

$f0d0 0b89

Unused

Flash Main Array

SRAM

$f0d0 0b80

SRAM

Flash Main Array

SRAM

$f0d0 0b8b

Flash Main Array

External Bus

SRAM

$f0d0 0b98

External Bus

SRAM

$f0d0 0b99

Unused

External Bus

SRAM

$f0d0 0b90

SRAM

External Bus

SRAM

$f0d0 0b9b

Flash Main Array

Unused

SRAM

$f0d0 0b08

External Bus

Unused

SRAM

$f0d0 0b09

Unused

SRAM

$f0d0 0b00

SRAM

Unused

SRAM

$f0d0 0b0b

Flash Main Array

SRAM

$f0d0 0bb8

External Bus

SRAM

$f0d0 0bb9

Unused

SRAM

$f0d0 0bb0

SRAM

$f0d0 0bbb

MAC7200 Datasheet(PDF) 184 Page - Freescale Semiconductor, Inc

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