Datasheet

166

11011B–ATARM–21-Feb-12

SAM3N

10.21.3 CPUID Base Register

The CPUID register contains the processor part number, version, and implementation informa-

tion. See the register summary in Table 10-30 on page 164 for its attributes. The bit assignments

are:

• Implementer

Implementer code:

0x41 = ARM

•Variant

Variant number, the r value in the rnpn product revision identifier:

0x2 = r2p0

• Constant

Reads as 0xF

•PartNo

Part number of the processor:

0xC23 = Cortex-M3

• Revision

Revision number, the p value in the rnpn product revision identifier:

0x0 = r2p0

31 30 29 28 27 26 25 24

Implementer

23 22 21 20 19 18 17 16

Variant Constant

15 14 13 12 11 10 9 8

PartNo

76543210

PartNo Revision