Motorola MPC8260 User Manual
MOTOROLA
Chapter 3. Memory Map
3-1
Chapter 3
Memory Map
Memory Map
30
30
The MPC8260's internal memory resources are mapped within a contiguous block of
memory. The size of the internal space in the MPC8260 is 128 Kbytes. The location of this
block within the global 4-Gbyte real memory space can be mapped on 128 Kbytes
resolution through an implementation speciÞc special register called the internal memory
map register (IMMR). For more information, see Section 4.3.2.7, ÒInternal Memory Map
Register (IMMR). The following table deÞnes the internal memory map of the MPC8260.
Table 3-1 deÞnes the internal memory map of the MPC8260.
memory. The size of the internal space in the MPC8260 is 128 Kbytes. The location of this
block within the global 4-Gbyte real memory space can be mapped on 128 Kbytes
resolution through an implementation speciÞc special register called the internal memory
map register (IMMR). For more information, see Section 4.3.2.7, ÒInternal Memory Map
Register (IMMR). The following table deÞnes the internal memory map of the MPC8260.
Table 3-1 deÞnes the internal memory map of the MPC8260.
Table 3-1. Internal Memory Map
Internal
Address
Abbreviation
Name
Size
Section/Page Number
CPM Dual-Port RAM
00000Ð03FFF
DPRAM1
Dual-port RAM
16 Kbytes
04000Ð07FFF
Reserved
Ñ
16 Kbytes
Ñ
08000Ð08FFF
DPRAM2
Dual-port RAM
4 Kbytes
09000Ð0AFFF
Reserved
Ñ
8 Kbytes
Ñ
0B000Ð0BFFF DPRAM3
Dual-port RAM
4 Kbytes
0C000Ð0FFFF Reserved
Ñ
16 Kbytes
Ñ
General SIU
10000
SIUMCR
SIU module conÞguration register
32 bits
10004
SYPCR
System protection control register
32 bits
10008
Reserved
Ñ
6 bytes
Ñ
1000E
SWSR
Software service register
16 bits
10010Ð10023
Reserved
Ñ
20 bytes
Ñ
10024
BCR
Bus conÞguration register
32 bits
10028
PPC_ACR
60x bus arbiter conÞguration register
8 bits
1002C
PPC ALRH
60x bus arbitration-level register high
(Þrst 8 clients)
(Þrst 8 clients)
32 bits