Technical Reference Manual
002-29852 Rev. *B
4.13.2.10 CM4_DWT_MASK0
Description:
Comparator Mask registers
Address:
0xE0001024
Offset:
0x24
Retention:
Retained
IsDeepSleep:
No
Comment:
The MASKn register characteristics are:
Purpose: Provides the size of the ignore mask applied to the access address for address
range matching by comparator n.
Usage constraints: The operation of comparator n depends also on the registers COMPn and
FUNCTIONn, see Comparator registers, COMPn and Comparator Function registers,
FUNCTIONn on Arm TRM page C1-806.
Configurations:
Implemented only when CTRL.NUMCOMP is nonzero, see Control register, CTRL on page
C1-797.
CTRL.NUMCOMP defines the number of implemented MASKn registers. Implemented
MASKn registers number from 0 to (NUMCOMP-1). Unimplemented registers are 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
None [7:5]
MASK [4:0]
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
0:4
MASK
RW
R
0
The size of the ignore mask, 0-31 bits, applied to
address range matching.
The maximum mask size is IMPLEMENTATION
DEFINED. A debugger can write 0b11111 to this field
and then read the register back to determine the
maximum mask size supported.
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2022-04-18
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