Specifications

405GP – Power PC 405GP Embedded Processor
AMCC 7
Revision 2.01 – January 6, 2005
Data Sheet
Address Map Support
The PPC405GP incorporates two simple and separate address maps. The first address map defines the possible
use of address regions that the processor can access. The second address map is for Device Configuration
Registers (DCRs). The DCRs are accessed by software running on the PPC405GP processor through the use of
mtdcr and mfdcr instructions.
System Memory Address Map 4GB System Memory
Function Subfunction Start Address End Address Size
General Use
SDRAM, External Peripherals, and PCI
Memory
Note: Any of the address ranges listed at
right may be use for any of the above
functions.
0x00000000 0xE7FFFFFF 3712MB
0xE8010000 0xE87FFFFF 8MB
0xEC000000 0xEEBFFFFF 44MB
0xEEE00000 0xEF3FFFFF 6MB
0xEF500000 0xEF5FFFFF 1MB
0xF0000000 0xFFFFFFFF 256MB
Boot-up
Peripheral Bus Boot
1
0xFFE00000 0xFFFFFFFF 2MB
PCI Boot
2
0xFFFE0000 0xFFFFFFFF 128KB
PCI
PCI I/O 0xE8000000 0xE800FFFF 64KB
PCI I/O 0xE8800000 0xEBFFFFFF 56MB
Configuration Registers 0xEEC00000 0xEEC00007 8B
Interrupt Acknowledge and Special Cycle 0xEED00000 0xEED00003 4B
Local Configuration Registers 0xEF400000 0xEF40003F 64B
Internal Peripherals
UART0 0xEF600300 0xEF600307 8B
UART1 0xEF600400 0xEF600407 8B
IIC0 0xEF600500 0xEF60051F 32B
OPB Arbiter 0xEF600600 0xEF60063F 64B
GPIO Controller Registers 0xEF600700 0xEF60077F 128B
Ethernet Controller Registers 0xEF600800 0xEF6008FF 256B
Notes:
1. When peripheral bus boot is selected, peripheral bank 0 is automatically configured at reset to the address range listed above.
2. If PCI boot is selected, a PLB-to-PCI mapping is automatically configured at reset to the address range listed above.
3. After the boot process, software may reassign the boot memory regions for other uses.
4. All address ranges not listed above are reserved.