HD6417034B RENESAS [Renesas Technology Corp], HD6417034B Datasheet - Page 635

• Manufacturer Part Number: HD6417034B
• Description: 32-Bit RISC Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

A.2.39
Start Address: H'5FFFF98
Bus Width: 8/16/32
Bit
Initial value
Read/Write
Bit
Initial value
Read/Write
Table A.40 BBR Bit Functions
Bit
7,6
5,4
3,2
1,0
Bit name
CPU cycle/DMA cycle 0
select (CD1, CD0)
Instruction fetch/data
access select
(ID1, ID0)
Read/write select
(RW1, RW0)
Operand size select
(SZ1, SZ0)
Break Bus Cycle Register (BBR)
CD1
R/W
15
—
—
0
7
0
Value Description
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
CD0
R/W
14
—
—
0
6
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
User break interrupt not generated
CPU cycle is break condition
DMA cycle is break condition
CPU cycle and DMA cycle are both break conditions
User break interrupt not generated
Instruction fetch cycle is break condition
Data access cycle is break condition
Instruction fetch cycle and data access cycle are both
break conditions
User break interrupt not generated
Read cycle is break condition
Write cycle is break condition
Read cycle and write cycle are both break conditions
Operand size not included in the break conditions
Byte access is break condition
Word access is break condition
Longword access is break condition
R/W
ID1
13
—
—
0
5
0
Appendix A On-Chip Supporting Module Registers
R/W
ID0
12
—
—
0
4
0
Rev. 7.00 Jan 31, 2006 page 609 of 658
RW1
R/W
11
—
—
0
3
0
RW0
R/W
10
—
—
0
2
0
REJ09B0272-0700
R/W
SZ1
—
—
9
0
1
0
(Initial value)
(Initial value)
(Initial value)
(Initial value)
R/W
SZ0
—
—
UBC
8
0
0
0