Nations Technologies Inc.
Tel
:
+86-755-86309900
:
Address: Nations Tower, #109 Baoshen Road, Hi-tech Park North.
Nanshan District, Shenzhen, 518057, P.R.China
341
/
631
Bit field
Name
Description
These bits determine the the precharge time before each sampling.
0x0: 1 RTCCLK cycles
0x1: 2 RTCCLK cycles
0x2: 4 RTCCLK cycles
0x3: 8 RTCCLK cycles
12:11
TPFLT[1:0]
RTC_TAMPx filter count
These bits determine the number of consecutive samples when occur active level.
0x0: Triggers a tamper event at the active level.
0x1: Triggers a tamper event after 2 consecutive samples at the active level.
0x2: Triggers a tamper event after 4 consecutive samples at the active level.
0x3: Triggers a tamper event after 8 consecutive samples at the active level.
10:8
TPFREQ[2:0]
Tamper sampling frequency
This bit determines the frequency at the each RTC_TAMPx input is sampled.
0x0: Sampling once every 32768 RTCCLK (1 Hz when RTCCLK = 32.768 KHz).
0x1: Sampling once every 16384 RTCCLK.
0x2: Sampling once every 8192 RTCCLK.
0x3: Sampling once every 4096 RTCCLK.
0x4: Sampling once every 2048 RTCCLK.
0x5: Sampling once every 1024 RTCCLK.
0x6: Sampling once every 512 RTCCLK.
0x7: Sampling once every 256 RTCCLK.
7
TPTS
Tamper event trigger timestamp
0: Disable tamper event trigger timestamp
1: Enable tamper event trigger timestamp
TPTS is valid even if RTC_CTRL.TSEN=0.
6
TP3TRG
Tamper 3 event trigger edge
if TPFLT[1:0] != 00, tamper detection is in level mode:
0: low level trigger a tamper detection event.
1: high level trigger a tamper detection event.
if TPFLT = 00, tamper detection is in edge mode:
0: Rising edge trigger a tamper detection event.
1: Falling edge trigger a tamper detection event
5
TP3EN
Tamper 3 detection enable
0: Disable tamper detection
1: Enable tamper detection
4
TP2TRG
Tamper 2 event trigger edge
if TPFLT[1:0] != 00, tamper detection is in level mode:
0: low level trigger a tamper detection event.
1: high level trigger a tamper detection event.
if TPFLT = 00, tamper detection is in edge mode:
0: Rising edge trigger a tamper detection event.