System Control Coprocessor
ARM DDI 0363E Copyright ©2009 ARM Limited. All rights reserved. 4-9
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4.2 System control coprocessor registers

This section describes all of the registers in the system control coprocessor. The section presents

a summary of the registers and descriptions in register order of CRn, Opcode_1, CRm,

Opcode_2.

For more information on using the system control coprocessor and the general method of how

to access CP15 registers, see the ARM Architecture Reference Manual.

4.2.1 Register allocation

Table4-2 shows a summary of address allocation and reset values for the registers in the system

control coprocessor where:

• CRn is the register number within CP15

• Op1 is the Opcode_1 value for the register

• CRm is the operational register

• Op2 is the Opcode_2 value for the register.

Table4-2 Summary of CP15 registers and operations
CRn Op1 CRm Op2 Register or operation Type Reset value Page
c0 0 c0 {0, 3, 6-7} Main ID Read-only
0x41xFC14x
apage4-14
1 Cache Type Read-only
0x8003C003
page4-15
2 TCM Type Read-only
0x00010001
page4-16
4 MPU Type Read-only
0x00000000
bpage4-17
5 Multiprocessor ID Read-only
0x00000000
page4-18
c1 0 Processor Feature 0 Read-only
0x00000131
page4-18
1 Processor Feature 1 Read-only
0x00000001
page4-19
2 Debug Feature 0 Read-only
0x00010400
page4-20
3 Auxiliary Feature 0 Read-only
0x00000000
page4-21
4 Memory Model Feature 0 Read-only
0x00210030
page4-21
5 Memory Model Feature 1 Read-only
0x00000000
page4-22
6 Memory Model Feature 2 Read-only
0x01200000
page4-24
7 Memory Model Feature 3 Read-only
0x00000011
page4-25
c2 0 Instruction Set Attributes 0 Read-only
0x01101111
page4-26
c0 0 c2 1 Instruction Set Attributes 1 Read-only
0x13112111
page4-27
2 Instruction Set Attributes 2 Read-only
0x21232131
page4-28
3 Instruction Set Attributes 3 Read-only
0x01112131
page4-30
4 Instruction Set Attributes 4 Read-only
0x00010142
page4-31
5 Instruction Set Attributes 5 Read-only
0x00000000
page4-32
6-7 Reserved, Read As Zero
(RAZ)
Read-only
0x00000000
page4-32
c3-c7 0-7 Reserved, RAZ Read-only
0x00000000
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