Rev. 5.00, 09/03, page 22 of 760
Register values after a reset are shown in table 2.1.
Table 2.1
Initial Register Values
Type
Registers
Initial Value
*
General registers
R0 to R15
Undefined
Control registers
SR
MD bit = 1, RB bit = 1, BL bit = 1,
I3–I0 = 1111 (H'F), reserved bits =
0, others undefined
GBR, SSR, SPC
Undefined
VBR
H'00000000
System registers
MACH, MACL, PR
Undefined
PC
H'A0000000
Note:
*
Register values are initialized at power-on reset or manual reset.
2.1.2
General Registers
There are 16 general registers, designated R0 to R15 (figure 2.3). General registers R0 to R7 are
banked registers, with a different R0–R7 register bank (R0_BANK0–R7_BANK0 or
R0_BANK1–R7_BANK1) being accessed according to the processor mode. For details, see
figures 2.1 and 2.2.
The general register configuration is shown in figure 2.3.
31
0
R0
*
1
*
2
General Registers
Notes:
R0 functions as an index register in the indexed
register-indirect addressing mode and indexed
GBR-indirect addressing mode. In some instructions,
only R0 can be used as the source register or
destination register.
R0–R7 are banked registers.
In privileged mode, SR.RB specifies which banked
registers are accessed as general registers
(R0_BANK0
−
R7_BANK0 or R0_BANK1
−
R7_BANK1).
1.
2.
R1
*
2
R2
*
2
R3
*
2
R4
*
2
R5
*
2
R6
*
2
R7
*
2
R8
R9
R10
R11
R12
R13
R14
R15
Figure 2.3 General Registers
Summary of Contents for SH7709S
Page 2: ......
Page 44: ...Rev 5 00 09 03 page xliv of xliv ...
Page 62: ...Rev 5 00 09 03 page 18 of 760 ...
Page 128: ...Rev 5 00 09 03 page 84 of 760 ...
Page 146: ...Rev 5 00 09 03 page 102 of 760 ...
Page 224: ...Rev 5 00 09 03 page 180 of 760 ...
Page 246: ...Rev 5 00 09 03 page 202 of 760 ...
Page 266: ...Rev 5 00 09 03 page 222 of 760 ...
Page 370: ...Rev 5 00 09 03 page 326 of 760 ...
Page 432: ...Rev 5 00 09 03 page 388 of 760 ...
Page 532: ...Rev 5 00 09 03 page 488 of 760 ...
Page 598: ...Rev 5 00 09 03 page 554 of 760 ...
Page 630: ...Rev 5 00 09 03 page 586 of 760 ...
Page 656: ...Rev 5 00 09 03 page 612 of 760 ...
Page 684: ...Rev 5 00 09 03 page 640 of 760 ...
Page 700: ...Rev 5 00 09 03 page 656 of 760 ...
Page 758: ...Rev 5 00 09 03 page 714 of 760 ...
Page 807: ...SH7709S Group Hardware Manual REJ09B0081 0500O ADE 602 250C ...