r5f71374an80fpv Renesas Electronics Corporation., r5f71374an80fpv Datasheet - Page 168

• Manufacturer Part Number: r5f71374an80fpv
• Description: 32-bit Risc Microcomputer Superh?? Risc Engine Family
• Manufacturer: Renesas Electronics Corporation.

Section 7 User Break Controller (UBC)
7.3.13
BRSR is a 32-bit read-only register. BRSR stores bits 27 to 0 in the address of the branch source
instruction. BRSR has the flag bit that is set to 1 when a branch occurs. This flag bit is cleared to 0
when BRSR is read, the setting to enable PC trace is made, or BRSR is initialized by a power-on
reset. Other bits are not initialized by a power-on reset. The four BRSR registers have a queue
structure and a stored register is shifted at every branch.
Initial value:
Initial value:
Rev. 1.00 Sep. 21, 2007 Page 142 of 1124
REJ09B0402-0100
Bit
31
30 to 28
27 to 0
R/W:
R/W:
Bit:
Bit:
BSA15 BSA14 BSA13 BSA12 BSA11 BSA10 BSA9
Branch Source Register (BRSR)
SVF
31
15
R
R
Bit Name
SVF

BSA27 to
BSA0
0
-
30
14
R
R
0
-
-
29
13
R
R
0
-
-
Initial
Value
0
All 0
Undefined R
28
12
R
R
0
-
-
BSA27 BSA26 BSA25 BSA24 BSA23 BSA22 BSA21 BSA20 BSA19 BSA18 BSA17 BSA16
27
11
R
R
-
-
R/W
R
R
26
10
R
R
-
-
Description
BRSR Valid Flag
Indicates whether the branch source address is stored.
This flag bit is set to 1 when a branch occurs. This flag
is cleared to 0 when BRSR is read, the setting to
enable PC trace is made, or BRSR is initialized by a
power-on reset.
0: The value of BRSR register is invalid
1: The value of BRSR register is valid
Reserved
These bits are always read as 0. The write value
should always be 0.
Branch Source Address
Store bits 27 to 0 of the branch source address.
25
R
R
9
-
-
BSA8
24
R
R
8
-
-
BSA7
23
R
R
7
-
-
BSA6
22
R
R
6
-
-
BSA5
21
R
R
5
-
-
BSA4
20
R
R
4
-
-
BSA3
19
R
R
3
-
-
BSA2
18
R
R
2
-
-
BSA1
17
R
R
1
-
-
BSA0
16
R
R
0
-
-