Section 7 User Break Controller (UBC)
Rev. 3.00 Sep. 27, 2007 Page 133 of 758
REJ09B0243-0300
7.2.14
Branch Destination Register (BRDR)
BRDR is a 32-bit read-only register. BRDR stores bits 27 to 0 in the address of the branch
destination instruction. BRDR has the flag bit that is set to 1 when a branch occurs. This flag bit is
cleared to 0 by a power-on reset or manual reset when BRDR is read or the setting to enable PC
trace is made. Other bits are not initialized by a power-on reset. The eight BRDR registers have a
queue structure and a stored register is shifted at every branch.
Bit:
Initial value:
R/W:
Bit:
Initial value:
R/W:
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0
0
0
0
-
-
-
-
-
-
-
-
-
-
-
-
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
DVF
-
-
-
BDA27 BDA26 BDA25 BDA24 BDA23 BDA22 BDA21 BDA20 BDA19 BDA18 BDA17 BDA16
BDA15 BDA14 BDA13 BDA12 BDA11 BDA10
BDA9
BDA8
BDA7
BDA6
BDA5
BDA4
BDA3
BDA2
BDA1
BDA0
Bit Bit
Name
Initial
Value
R/W Description
31
DVF
0
R
BRDR Valid Flag
Indicates whether a branch destination address is
stored. This flag bit is set to 1 when a branch occurs.
This flag is cleared to 0 when BRDR is read, the
setting to enable PC trace is made, or BRDR is
initialized by a power-on reset.
0: The value of BRDR register is invalid
1: The value of BRDR register is valid
30 to 28
All
0
R
Reserved
These bits are always read as 0. The write value
should always be 0.
27 to 0
BDA27 to
BDA0
Undefined
R
Branch Destination Address
Store bits 27 to 0 of the branch destination address.
Содержание SH7124 R5F7124
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Страница 8: ...Rev 3 00 Sep 27 2007 Page viii of xx ...
Страница 36: ...Section 1 Overview Rev 3 00 Sep 27 2007 Page 16 of 758 REJ09B0243 0300 ...
Страница 68: ...Section 2 CPU Rev 3 00 Sep 27 2007 Page 48 of 758 REJ09B0243 0300 ...
Страница 108: ...Section 5 Exception Handling Rev 3 00 Sep 27 2007 Page 88 of 758 REJ09B0243 0300 ...
Страница 166: ...Section 7 User Break Controller UBC Rev 3 00 Sep 27 2007 Page 146 of 758 REJ09B0243 0300 ...
Страница 400: ...Section 9 Multi Function Timer Pulse Unit 2 MTU2 Rev 3 00 Sep 27 2007 Page 380 of 758 REJ09B0243 0300 ...
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