Infineon Technologies C166S V2 User Manual page 90

The Constant Ones Register ONES
All bits of this bit addressable register are fixed to 1 by hardware. This register is read-
only. Register ONES can be used as a register-addressable constant of all ones for bit
manipulation or mask generation. It can be accessed via any instruction capable of
accessing an SFR.
ONES
Constant Ones Register
15 14 13 12
1 1 1
r r r
Field
1
CPU Identification Register CPUID
This 16-bit register contains the module and revision number of the implemented
C166S V2 core module.
CPUID
CPU Identification Register
15 14 13 12
MODULE NUMBER
Field
MODULE NUMBER [15:8]
VERSION NUMBER [7:0]
User Manual
11 10 9
1 1 1 1
r r r r
Bits Type Description
[all] r Fixed to One
11 10 9
r
Bits Type Description
r
r
SFRb
8 7 6 5
1 1 1 1
r r r
ESFR
8 7 6 5
VERSION NUMBER
Module Number
C166S V2 core module number
03
H
Version Number
Version Number
2-90
User Manual
Central Processing Unit
Reset Value: FFFF
4 3 2
1 1 1
r r r r
Reset Value: 03??
4 3 2
r
V 1.7, 2001-01
C166S V2
H
1 0
1 1
r r
H
1 0