HD6417021 Hitachi Semiconductor, HD6417021 Datasheet - Page 94

• Manufacturer Part Number: HD6417021
• Description: SuperH RISC engine
• Manufacturer: Hitachi Semiconductor

Table 6.1
Name
Break address register high
Break address register low
Break address mask register high
Break address mask register low
Break bus cycle register
Note: Only the values of bits A27–A24 and A8–A0 are valid; bits A23–A9 are ignored. For details
6.2
6.2.1
There are two break address registers—break address register H (BARH) and break address
register L (BARL)—that together form a single group. Both are 16-bit read/write registers. BARH
stores the upper bits (bits 31–16) of the address of the break condition. BARL stores the lower bits
(bits 15–0) of the address of the break condition. A reset initializes both BARH and BARL to
H'0000. Neither is initialized in standby mode.
BARH: Break address register H.
• BARH Bits 15–0 (break address 31–16 (BA31–BA16)): BA31–BA16 store the upper bit
values (bits 31–16) of the address of the break condition.
Initial value:
Initial value:
on the register addresses, see section 8.3.5, Description of Areas.
Bit name:
Bit name:
Register Descriptions
Break Address Registers (BAR)
User Break Controller Registers
R/W:
R/W:
Bit:
Bit:
BA31
BA23
R/W
R/W
15
0
7
0
BA30
BA22
R/W
R/W
14
0
6
0
Abbr.
BARH
BARL
BAMRH
BAMRL
BBR
BA29
BA21
R/W
R/W
13
0
5
0
R/W
R/W
R/W
R/W
R/W
R/W
BA28
BA20
R/W
R/W
12
0
4
0
Address*
H'5FFFF90
H'5FFFF92
H'5FFFF94
H'5FFFF96
H'5FFFF98
BA19
BA27
R/W
R/W
11
3
0
0
BA26
BA18
R/W
R/W
10
0
2
0
Initial
Value
H'0000
H'0000
H'0000
H'0000
H'0000
BA25
BA17
R/W
R/W
9
0
1
0
HITACHI 77
Bus width
8, 16, 32
8, 16, 32
8, 16, 32
8, 16, 32
8, 16, 32
BA24
BA16
R/W
R/W
8
0
0
0