AS3930
Data Sheet - Detailed Description
Table 7. Default Values of Registers
Default
Value
Register
Name
Type
Description
R1<2>
R1<1>
EN_PAT2
EN_WPAT
EN_RTC
S_ABSH
W_PAT
W
W
W
W
W
0
1
Double wakeup pattern correlation
Data correlation enable
R1<0>
1
Crystal oscillator enable
R2<7>
0
Data slicer threshold reduction
Pattern correlation tolerance (see Table 19)
Reserved
R2<6:5>
R2<4:2>
R2<1:0>
00
000
00
S_WU1
W
W
Tolerance setting for the stage wakeup (see Table 13)
Data slicer hysteresis
if HY_20m = 0 then comparator hysteresis = 40mV
if HY_20m = 1 then comparator hysteresis = 20mV
R3<7>
R3<6>
HY_20m
0
0
Data slicer hysteresis only on positive edges (HY_POS=0, hysteresis on both
edges, HY_POS=1, hysteresis only on positive edges)
HY_POS
W
R3<5:3>
R3<2:0>
FS_SCL
FS_ENV
W
W
100
000
Data slices time constant (see Table 17)
Envelop detector time constant (see Table 16)
Off time in ON/OFF operation mode
T_OFF=00
T_OFF=01
T_OFF=10
T_OFF=11
1ms
R4<7:6>
T_OFF
W
00
2ms
4ms
8ms
R4<5:4>
R4<3:0>
D_RES
GR
W
W
01
Antenna damping resistor (see Table 15)
Gain reduction (see Table 14)
0000
2nd Byte of wakeup pattern
R5<7:0>
R6<7:0>
TS2
TS1
W
W
01101001
10010110
1st Byte of wakeup pattern
R7<7:5>
R7<4:0>
T_OUT
T_HBIT
W
W
000
Automatic time-out (see Table 20)
01011
Bit rate definition (see Table 18)
Artificial wake-up
No artificial wake-up
1 sec
T_AUTO=000
T_AUTO=001
T_AUTO=010
T_AUTO=011
T_AUTO=100
T_AUTO=101
T_AUTO=110
T_AUTO=111
5 sec
R8<2:0>
T_AUTO
W
000
20 sec
2 min
15min
1 hour
2 hour
R9<6:0>
R10<4:0>
R11<4:0>
000000
Reserved
RSSI channel
Reserved
RSSI
R
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