Technical Reference Manual
002-29852 Rev. *B
4.13.2.6 CM4_DWT_LSUCNT
Description:
LSU Count register
Address:
0xE0001014
Offset:
0x14
Retention:
Retained
IsDeepSleep:
No
Comment:
The LSUCNT register characteristics are:
Purpose: Increments on the additional cycles required to execute all load or store instructions
Usage constraints: The counter initializes to 0 when software enables its counter overflow
event by setting the CTRL.LSUEVTENA bit to 1.
Configurations:
Implemented only when CTRL.NOPRFCNT is RAZ, see Control register, CTRL on page C1-
797.
If CTRL.NOPRFCNT is RAO, indicating that the implementation does not include the profiling
counters, this register is UNK/SBZP.
Attributes: See Table C1-21 on Arm TRM page C1-797.
Default:
0x0
Bit-field Table
Bits
7
6
5
4
3
2
1
0
Name
LSUCNT [7:0]
Bits
15
14
13
12
11
10
9
8
Name
None [15:8]
Bits
23
22
21
20
19
18
17
16
Name
None [23:16]
Bits
31
30
29
28
27
26
25
24
Name
None [31:24]
Bit-fields
Bits Name
SW
HW
Default or
Enum
Description
0:7
LSUCNT
RW
RW
0
Load-store overhead counter. Counts one on each
cycle when all of the following are true:
- No instruction is executed, see CPI Count register,
DWT_CPICNT on page C1-801.
- No exception-entry or exception-exit operation is in
progress, see Exception Overhead Count register,
DWT_EXCCNT on Arm TRM page C1-802.
- A load-store operation is in progress.
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2022-04-18
TRAVEO™ T2G Automotive MCU: TVII-B-E-4M body controller entry registers