Memory Map - Motorola MPC8260 PowerQUICC II User Manual

Chapter 3

Memory Map

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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.
Internal
Abbreviation
Address
00000Ð03FFF DPRAM1
04000Ð07FFF Reserved
08000Ð08FFF DPRAM2
09000Ð0AFFF Reserved
0B000Ð0BFFF DPRAM3
0C000Ð0FFFF Reserved
10000 SIUMCR
10004 SYPCR
10008 Reserved
1000E SWSR
10010Ð10023 Reserved
10024 BCR
10028 PPC_ACR
1002C PPC ALRH
MOTOROLA
Table 3-1. Internal Memory Map
Name
CPM Dual-Port RAM
Dual-port RAM
Ñ
Dual-port RAM
Ñ
Dual-port RAM
Ñ
General SIU
SIU module conÞguration register
System protection control register
Ñ
Software service register
Ñ
Bus conÞguration register
60x bus arbiter conÞguration register
60x bus arbitration-level register high
(Þrst 8 clients)
Chapter 3. Memory Map
Size Section/Page Number
16 Kbytes 13.5/13-15
16 Kbytes Ñ
4 Kbytes 13.5/13-15
8 Kbytes Ñ
4 Kbytes 13.5/13-15
16 Kbytes Ñ
32 bits 4.3.2.6/4-31
32 bits 4.3.2.8/4-35
6 bytes Ñ
16 bits 4.3.2.9/4-36
20 bytes Ñ
32 bits 4.3.2.1/4-25
8 bits 4.3.2.2/4-28
32 bits 4.3.2.3/4-28
3-1