MAC7200 datasheet(196/976 Pages) FREESCALE

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Boot Assist Module (BAM) Memory Map

MAC7200 Microcontroller Family Reference Manual, Rev. 2

118

Freescale Semiconductor

9.14

Boot Assist Module (BAM) Memory Map

The BAM, unlike other resources, is not software relocatable in the system, and is always present at $A000

0000, regardless of chip mode. When JTAG Lockout Recovery is triggered, the BAM is mirrored to

address $0000 0000, and the Lockout Recovery firmware is executed after reset. Although it is generally

not used by the application, it is accessible in software at address $A000 0000.

9.15

Exception Table Memory Map

The ARM7 exception vector table is located at $0000 0000 to $0000 001F, and may not be relocated either

at reset or after reset. Please refer to Chapter 7, “Exceptions” for more details on exceptions.

$0000 7DF0

HBL Register Shadow

$0000 7DF8

SLL Register Shadow

$0000 7E00

PFCR2 (BIU2) Register Shadow

$0000 7E08

PFSACC (BIU3) Register Shadow

$0000 7E10

PFDACC (BIU4) Register Shadow

$0000 7E18

$0000 7FFF

Shadow Block (User Area)

1. This memory map is assuming a 32K Shadow Block. If the size of the Shadow Block

changes, the registers will move accordingly (i.e.-the registers are always placed at the

end of the Shadow Block in order to allow the maximum amount of contiguous user area

possible).

Table 9-17. Boot Assist Module (BAM) Memory Map

Address Offset

Function

$0000 0000

$1FFF FFFF

BAM

Table 9-18. Exception Table Memory Map

Address Offset

Function

$0000 0000

Reset exception

$0000 0004

Undefined Instruction exception

$0000 0008

Software Interrupt (SWI) exception

$0000 000c

Prefetch Abort exception

$0000 0010

Data Abort exception

$0000 0014

Reserved

Table 9-16. Shadow Block Memory Map1 (Continued)

Address Offset

Function

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