Boot Assist Module (BAM)
MPC5510 Microcontroller Family Reference Manual, Rev. 1
32-2
Freescale Semiconductor
Preliminary
32.1.2
Modes of Operation
32.1.3
Normal Mode
In normal operation the BAM responds to all read requests within its address space. The e200z1 core
executes the BAM program after the negation of reset if the CRP CRP_Z1VEC register value is
0xFFFF_FFFC.
32.1.4
Debug Mode
The BAM program is not executed when the MCU comes out of reset in OnCE debug mode. The
development tool must initialize the MCU instead of BAM before starting the user application.
32.1.5
Internal Boot Mode
This mode of operation is for systems that boot from internal memory. The internal flash is used for all
code and the boot configuration data. After the BAM has completed the boot process, user code may
enable the external bus interface if required.
32.1.6
Serial Boot Mode
This mode of operation can be used for initial MCU programming or for user system initialization. It
allows a user program to be loaded into system RAM, using the eSCI or FlexCAN serial interface, then
executed. The loaded program can be used to control the download of data, and the erasing or
programming of internal or external flash memory.
32.2
Memory Map and Registers
This section provides a detailed description of the BAM memory map.
32.2.1
Module Memory Map
shows the BAM memory map.
The BAM ROM module occupies the last 16 KB of the MCU memory space; however, only the last 4 KB
is physically present.
NOTE
Attempting to execute instructions from addresses in the range
0xFFFF_C000–0xFFFF_EFFF may cause unpredictable results.
Some important absolute addresses are presented in
.