Technical Reference Manual
002-29852 Rev. *B
3.8.3 SCS
3.8.3.1 CM0P_SCS_SYST_CSR
Description:
SysTick Control & Status
Address:
0xE000E010
Offset:
0x10
Retention:
Retained
IsDeepSleep:
No
Comment:
Controls the SysTick counter and provides status data. The SysTick counter is functional in
the Active and Sleep power modes (and not functional in the DeepSleep, and Hibernate power
modes).
Default:
0x0
Bit-field Table
Bits
7
6
5
4
3
2
1
0
Name
None [7:3]
CLKSOURCE
[2:2]
TICKINT
[1:1]
ENABLE
[0:0]
Bits
15
14
13
12
11
10
9
8
Name
None [15:8]
Bits
23
22
21
20
19
18
17
16
Name
None [23:17]
COUNTFLAG
[16:16]
Bits
31
30
29
28
27
26
25
24
Name
None [31:24]
Bit-fields
Bits Name
SW
HW
Default or
Enum
Description
0
ENABLE
RW
R
0
Indicates the enabled status of the SysTick counter:
'0': counter is disabled.
'1': counter is operating.
1
TICKINT
RW
R
0
Indicates whether counting to '0' causes the status of
the SysTick exception to change to pending:
'0': count to '0' does not affect the SysTick exception
status.
'1': count to '0' changes the SysTick exception status
to pending.
Changing the value of the counter to '0' by writing zero
to the SYST_CVR register to '0' never changes the
status of the SysTick exception.
2
CLKSOURCE
RW
R
0
Indicates the SysTick counter clock source:
'0': SysTick uses the low frequency clock. For this
mode to function, the low frequency clock should be
less than half the frequency of 'clk_sys'.
'1': SysTick uses the system/processor clock 'clk_sys'.
Note: Low frequency clock can be selected using
CPUSS_SYSTICK_CTL.CLOCK_SOURCE field.
16
COUNTFLAG
R
RW
0
Indicates whether the counter has counted to '0' since
the last read of this register:
'0': counter has not counted to '0'.
'1': counter has counted to '0'.
COUNTFLAG is set to '1' by a count transition from '1'
to '0'.
COUNTFLAG is cleared to '0' by a read of this register,
and by any write to the SYST_CVR register.
162
2022-04-18
TRAVEO™ T2G Automotive MCU: TVII-B-E-4M body controller entry registers