Technical Reference Manual
002-29852 Rev. *B
3.8.3.4 CM0P_SCS_SYST_CALIB
Description:
SysTick Calibration Value
Address:
0xE000E01C
Offset:
0x1C
Retention:
Retained
IsDeepSleep:
No
Comment:
Reads the calibration value and parameters for SysTick.
Default:
0x0
Bit-field Table
Bits
7
6
5
4
3
2
1
0
Name
TENMS [7:0]
Bits
15
14
13
12
11
10
9
8
Name
TENMS [15:8]
Bits
23
22
21
20
19
18
17
16
Name
TENMS [23:16]
Bits
31
30
29
28
27
26
25
24
Name
NOREF
[31:31]
SKEW
[30:30]
None [29:24]
Bit-fields
Bits Name
SW
HW
Default or
Enum
Description
0:23
TENMS
R
RW
X
Optionally, holds a reload value to be used for 10ms
(100Hz) timing, subject to system clock skew errors. If
this field is '0', the calibration value is not known.
This field is controlled by
CPUSS_SYSTICK_CTL.TENMS field.
30
SKEW
R
RW
X
Indicates whether the 10ms calibration value is exact:
'0': 10ms calibration value is exact.
'1': 10ms calibration value is inexact, because of the
clock frequency.
This field is controlled by
CPUSS_SYSTICK_CTL.SKEW field.
31
NOREF
R
0
Indicates whether a implementation defined reference
clock is provided:
'0': the reference clock is provided.
'1': the reference clock is not provided.
When this bit is '1', the SYST_CSR.CLKSOURCEis
forced to '1' and cannot be cleared to '0'.
This field is controlled by
CPUSS_SYSTICK_CTL.NOREF field.
165
2022-04-18
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