GigaDevice Semiconductor GD32F3x0 - Tamper Register (RTC_TAMP)

GD32F3x0 User Manual
245
Note: When CWND8 = 1, CMSK[1:0] are stuck at “00”.
13
CWND16
Frequency compensation window 16 second selected
0: No effect
1: Calibration window is 16 second
Note: When CWND16 = 1, CMSK[0] are stuck at “0”.
12:9
Reserved
Must be kept at reset value.
8:0
CMSK[8:0]
Calibration mask number
The number of mask pulse out of 2
20
RTCCLK pulse.
This feature will decrease the frequency of calendar with a resolution of 0.9537
PPM.
15.4.14. Tamper register (RTC_TAMP)
Address offset: 0x40
Backup domain reset: 0x0000 0000
System reset: no effect
This register has to be accessed by word (32-bit).
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
Reserved
PC15MD
E
PC15VAL
PC14MD
E
PC14VAL
PC13MD
E
PC13VAL
Reserved
rw
rw
rw
rw
rw
rw
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
DISPU
PRCH[1:0]
FLT[1:0]
FREQ[2:0]
TPTS
Reserved
TP1EG
TP1EN
TPIE
TP0EG
TP0EN
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
Bits
Fields
Descriptions
31:24
Reserved
Must be kept at reset value.
23
PC15MDE
PC15 Mode
0: No effect
1: Force PC15 to push-pull output if LXTAL is disable
22
PC15VAL
PC15 Value
Only valid when LXTAL is disabled and PC15MDE = 1, PC15 output this bit data.
21
PC14MDE
PC14 Mode
0: No effect
1: Force PC14 to push-pull output if LXTAL is disable
20
PC14VAL
PC14 Value
Only valid when LXTAL is disabled and PC14MDE = 1, PC14 output this bit data.
19
PC13MDE
PC13 Mode
0: No effect
1: Force PC13 to push-pull output if all RTC alternate functions are disabled.
18
PC13VAL
PC13 value or alarm output type value