Table 12-16 Identification Code Register Bit Assignments; Figure 12-21 Identification Code Register Bit Assignments - ARM Cortex-M3 Technical Reference Manual

Debug Port
Bits Function
[31:28] Version
12-52
The Identification Code Register, IDCODE
The Identification Code Register is always present on all DP implementations. It
provides identification information about the ARM Debug Interface.
JTAG-DP It is accessed using its own scan chain.
SW-DP It is at address 0b00 on read operations when the DPnAP bit =1. Access
to the Identification Code Register is not affected by the value of the
CTRLSEL bit in the Select Register.
It is:
• a read-only register
• always accessible.
Figure 12-21 shows the register bit assignments.
Table 12-16 lists the bit functions of the Identification Code Register.
Description
Version code. The meaning of this field is Implementation-defined.
Copyright © 2005, 2006 ARM Limited. All rights reserved.

Figure 12-21 Identification Code Register bit assignments

Table 12-16 Identification Code Register bit assignments

ARM DDI 0337B