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CONTROL REGISTERS
RP0
— Register Pointer 0
Bit Identifier
Reset Value
Read/Write
Addressing Mode
.7–.3
.2–.0
RP1
— Register Pointer 1
Bit Identifier
Reset Value
Read/Write
Addressing Mode
.7– .3
.2– .0
4-40
.7
.6
1
1
R/W
R/W
Register addressing only
Register Pointer 0 Address Value
Register pointer 0 can independently point to one of the 256-byte working register
areas in the register file. Using the register pointers RP0 and RP1, you can select
two 8-byte register slices at one time as active working register space. After a reset,
RP0 points to address C0H in register set 1, selecting the 8-byte working register
slice C0H–C7H.
Not used for the S3C8275X/C8278X/C8274X
.7
.6
1
1
R/W
R/W
Register addressing only
Register Pointer 1 Address Value
Register pointer 1 can independently point to one of the 256-byte working register
areas in the register file. Using the register pointers RP0 and RP1, you can select
two 8-byte register slices at one time as active working register space. After a reset,
RP1 points to address C8H in register set 1, selecting the 8-byte working register
slice C8H–CFH.
Not used for the S3C8275X/C8278X/C8274X
S3C8275X/F8275X/C8278X/F8278X/C8274X/F8274X
.5
.4
0
0
R/W
R/W
R/W
.5
.4
0
0
R/W
R/W
R/W
D6H
.3
.2
.1
0
–
–
–
–
D7H
.3
.2
.1
1
–
–
–
–
Set 1
.0
–
–
Set 1
.0
–
–
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