ARM Architecture Reference Manual ARMv7-A and ARMv7-R edition

Debug Registers Reference
Figure C10-2 shows the fields in the 64-bit Peripheral ID value, and includes the field values for fields that:
have fixed values, including the bits that are reserved, RAZ
have fixed values in a device that is designed by ARM.
For more information about the fields and their values see Table C10-23.
Conceptual 64-bit Peripheral ID
DBGPID7 DBGPID6 DBGPID5 DBGPID4 DBGPID3 DBGPID2 DBGPID1 DBGPID0
7 0 7 0 7 0 7 0 7 0 7 0 7 0 7 0
00000000000000000000000000000100
10111011
63 56 55 48 47 40 39 36 35 32 31 28 27 24 23 20 19 18
12 11
0
Reserved, RAZ 4KB RevAnd Revison JEP 106 Part number
count
ID code
JEP 106
continuation
code
Bits with no value shown are IMPLEMENTATION DEFINED
Customer
modified Uses JEP 106 ID code
Some bit values shown are for a device designed by ARM Limited. See text for details.
Table C10-23 shows the fields in the Peripheral ID.
Figure C10-2 Peripheral ID fields, with values for a design by ARM
Table C10-23 Fields in the Debug Peripheral Identification Registers
Name Size Description Register
4KB count 4 bits Log2 of the number of 4KB blocks occupied by the device. In v7 Debug,
the debug registers occupy a single 4KB block, so this field is always 0x0.
JEP 106 code 4+7
bits
Identifies the designer of the device. This value consists of:
a 4-bit continuation code, also described as the bank number
a 7-bit identity code.
For implementations designed by ARM, the continuation code is 0x4
(bank 5), and the identity code is 0x3B.
For more information, see JEP106, Standard Manufacturers
Identification Code.
RevAnd 4 bits Manufacturing Revision Number. Indicates a late modification to the
device, usually as a result of an Engineering Change Order.
This field starts at 0x0 and is incremented by the integrated circuit
manufacturer on metal fixes.
Customer
modified
4 bits Indicates an endorsed modification to the device.
If the system designer cannot modify the RTL supplied by the processor
designer then this field is RAZ.
DBGPID4
DBGPID1,
DBGPID2,
DBGPID4
DBGPID3
DBGPID3
C10-100 Copyright © 1996-1998, 2000, 2004-2008 ARM Limited. All rights reserved. ARM DDI 0406B