ml670100 Oki Semiconductor, ml670100 Datasheet - Page 32

• Manufacturer Part Number: ml670100
• Description: Ml670100 Is A High-performance 32-bit Microcontroller
• Manufacturer: Oki Semiconductor

2.7.2
The THUMB state register set is a subset of the ARM state set. The programmer has direct
access to eight general registers, R0-R7, as well as the Program Counter (PC), a stack pointer
register (SP), a link register (LR), and the CPSR. There are banked Stack Pointers, Link
Registers and Saved Program Status Registers (SPSRs) for each privileged mode. This is shown
in Figure 2.3: Register organization in THUMB state.
The THUMB state register set
System & User
R0
R1
R2
R3
R4
R5
R6
R7
SP
LR
PC
CPSR
THUMB State General Registers and Program Counter
THUMB State Program Status Registers
=banked register
Figure 2.3 : Register organization in THUMB state
R0
R1
R2
R3
R4
R5
R6
R7
SP _fiq
LR_fiq
PC
CPSR
SPSR_fiq
FIQ
Supervisor
R0
R1
R2
R3
R4
R5
R6
R7
SP_svc
LR_svc
PC
CPSR
SPSR_svc
R0
R1
R2
R3
R4
R5
R6
R7
SP_irq
LR_irq
PC
CPSR
SPSR_irq
IRQ
Undefined
R0
R1
R2
R3
R4
R5
R6
R7
SP_und
LR_und
PC
CPSR
SPSR_und
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