121
6.1.3
Register Configuration
Table 6-1 shows the PC break controller registers.
Table 6-1
PC Break Controller Registers
Initial Value
Name
Abbreviation
R/W
Power-On
Reset
Manual
Reset
Address
*
1
Break address register A
BARA
R/W
H'XX000000 Retained
H'FE00
Break address register B
BARB
R/W
H'XX000000 Retained
H'FE04
Break control register A
BCRA
R/(W)
*
2
H'00
Retained
H'FE08
Break control register B
BCRB
R/(W)
*
2
H'00
Retained
H'FE09
Module stop control register C
MSTPCRC
R/W
H'FF
Retained
H'FDEA
Notes: 1. Lower 16 bits of the address.
2. Only 0 can be written, for flag clearing.
6.2
Register Descriptions
6.2.1
Break Address Register A (BARA)
Bit
:
Initial value :
R/W
:
—
—
31
Unde-
fined
—
—
24
Unde-
fined
R/W
BAA
23
23
0
R/W
BAA
22
22
0
R/W
BAA
21
21
0
R/W
BAA
20
20
0
R/W
BAA
19
19
0
R/W
BAA
18
18
0
R/W
BAA
17
17
0
R/W
BAA
16
16
0
R/W
0
BAA
7
7
R/W
0
BAA
6
6
R/W
0
BAA
5
5
R/W
0
BAA
4
4
R/W
0
BAA
3
3
R/W
0
BAA
2
2
R/W
0
BAA
1
1
R/W
0
BAA
0
0
• • •
• • •
• • •
• • •
• • •
• • •
• • •
• • •
BARA is a 32-bit readable/writable register that specifies the channel A break address.
BAA23 to BAA0 are initialized to H'000000 by a power-on reset and in hardware standby mode.
Bits 31 to 24—Reserved: These bits return an undefined value if read, and cannot be modified.
Bits 23 to 0—Break Address A23 to A0 (BAA23–BAA0): These bits hold the channel A PC
break address.