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S3C4530A Datasheet(PDF) 33 Page - Samsung semiconductor

Part No. S3C4530A
Description  16/32-bit RISC microcontroller is a cost-effective, high-performance microcontroller
Download  432 Pages
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Maker  SAMSUNG [Samsung semiconductor]
Homepage  http://www.samsung.com/Products/Semiconductor
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S3C4530A Datasheet(HTML) 33 Page - Samsung semiconductor

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S3C4530A
PROGRAMMER'S MODEL
2-7
The Relationship between ARM and THUMB State Registers
The THUMB state registers relate to the ARM state registers in the following way:
— THUMB state R0–R7 and ARM state R0–R7 are identical
— THUMB state CPSR and SPSRs and ARM state CPSR and SPSRs are identical
— THUMB state SP maps onto ARM state R13
— THUMB state LR maps onto ARM state R14
— The THUMB state program counter maps onto the ARM state program counter (R15)
This relationship is shown in Figure 2-5.
R0
R1
R2
R3
R4
R5
R6
R7
R0
R1
R2
R3
R5
R6
R7
R8
R9
R10
R11
R12
Stack Pointer (R13)
Link Register (R14)
Program Counter (R15)
CPSR
SPSR
Stack Pointer (SP)
Link Register (LR)
Program Counter (PC)
CPSR
SPSR
THUMB State
ARM State
R4
Figure 2-5. Mapping of THUMB State Registers onto ARM State Registers


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