Technical Reference Manual
002-29852 Rev. *B
4.13.2 DWT
4.13.2.1 CM4_DWT_CTRL
Description:
Control register
Address:
0xE0001000
Offset:
0x0
Retention:
Retained
IsDeepSleep:
No
Comment:
The CTRL register characteristics are:
Purpose: Provides configuration and status information for the DWT unit, and used to control
features of the unit.
Usage constraints: There are no usage constraints.
Configurations: Always implemented.
Attributes: See Table C1-21 and the register field descriptions.
Default:
0x40000000
Bit-field Table
Bits
7
6
5
4
3
2
1
0
Name
POSTPRESET [4:1]
CYCCNTENA
[0:0]
Bits
15
14
13
12
11
10
9
8
Name
None [15:13]
PCSAMPLEN
A [12:12]
SYNCTAP [11:10]
CYCTAP
[9:9]
POSTINIT
[8:8]
Bits
23
22
21
20
19
18
17
16
Name
None
[23:23]
CYCEVTENA
[22:22]
FOLDEVTEN
A [21:21]
LSUEVTENA
[20:20]
SLEEPEVTE
NA [19:19]
EXCEVTENA
[18:18]
CPIEVTENA
[17:17]
EXCTRCENA
[16:16]
Bits
31
30
29
28
27
26
25
24
Name
NUMCOMP [31:28]
NOTRCPKT
[27:27]
NOEXTTRIG
[26:26]
NOCYCCNT
[25:25]
NOPRFCNT
[24:24]
Bit-fields
Bits Name
SW
HW
Default or
Enum
Description
0
CYCCNTENA
RW
R
0
Enables CYCCNT:
0 Disabled.
1 Enabled.
This bit is UNK/SBZP if the NOCYCCNT bit is RAO.
1:4
POSTPRESET
RW
R
0
Reload value for the POSTCNT counter. For more
information see The POSTCNT timer on Arm TRM
page C1-792.
This field is UNK/SBZP if the NOCYCCNT bit is RAO.
5:8
POSTINIT
RW
R
0
Initial value for the POSTCNT counter. For more
information see Enabling POSTCNT, and behavior of
accesses to the DWT_CTRL.POSTINIT field and The
POSTCNT timer on Arm TRM page C1-792.
This field is UNK/SBZP if the NOCYCCNT bit is RAO.
Note
This field was previously called POSTCNT. The
changed name gives a better indication of its function.
9
CYCTAP
RW
R
0
Selects the position of the POSTCNT tap on the
CYCCNT counter:
0 POSTCNT tap at CYCCNT[6].
1 POSTCNT tap at CYCCNT[10].
For more information see The POSTCNT timer on
page C1-792.
This bit is UNK/SBZP if the NOCYCCNT bit is RAO.
326
2022-04-18
TRAVEO™ T2G Automotive MCU: TVII-B-E-4M body controller entry registers