Renesas HD6417641 用户手册
Section 11 User Break Controller (UBC)
Rev. 4.00 Sep. 14, 2005 Page 244 of 982
REJ09B0023-0400
11.2.2 Break
Address
Mask Register A (BAMRA)
BAMRA is a 32-bit readable/writable register. BAMRA specifies bits masked in the break address
specified by BARA.
specified by BARA.
Bit Bit
Name
Initial
Value R/W Description
Value R/W Description
31 to 0
BAMA31 to
BAMA0
BAMA0
All 0
R/W
Break Address Mask A
Specify bits masked in the channel A break address
bits specified by BARA (BAA31 to BAA0).
bits specified by BARA (BAA31 to BAA0).
0: Break address bit BAAn of channel A is included in
the break condition
1: Break address bit BAAn of channel A is masked and
is not included in the break condition
Note: n = 31 to 0
11.2.3 Break
Bus
Cycle Register A (BBRA)
Break bus cycle register A (BBRA) is a 16-bit readable/writable register, which specifies (1) L bus
cycle or I bus cycle, (2) instruction fetch or data access, (3) read or write, and (4) operand size in
the break conditions of channel A.
cycle or I bus cycle, (2) instruction fetch or data access, (3) read or write, and (4) operand size in
the break conditions of channel A.
Bit Bit
Name
Initial
Value R/W Description
Value R/W Description
15 to 8
All
0
R
Reserved
These bits are always read as 0. The write value
should always be 0.
should always be 0.
7
6
CDA1
CDA0
0
0
R/W
R/W
L Bus Cycle/I Bus Cycle Select A
Select the L bus cycle or I bus cycle as the bus cycle
of the channel A break condition.
of the channel A break condition.
00: Condition comparison is not performed
01: The break condition is the L bus cycle
10: The break condition is the I bus cycle
11: The break condition is the L bus cycle