AS3932 datasheet(15/34 Pages) AMSCO

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AS3932

Datasheet - Detailed Descr i p ti on

R3<7>

HY_20m

R/W

Data slicer hysteresis

if HY_20m = 0 then comparator hysteresis = 40mV

if HY_20m = 1 then comparator hysteresis = 20mV

R3<6>

HY_POS

R/W

Data slicer hysteresis on both edges (HY_POS = 0 → hysteresis on both

edges; HY_POS = 1 → hysteresis only on positive edges)

R3<5:3>

FS_SCL

R/W

100

Data slicer time constant (see Table 18)

R3<2:0>

FS_ENV

R/W

000

Envelop detector time constant (see Table 17)

R4<7:6>

T_OFF

R/W

Off time in ON/OFF operation mode

T_OFF=00

1ms

T_OFF=01

2ms

T_OFF=10

4ms

T_OFF=11

8ms

R4<5:4>

D_RES

R/W

Antenna damping resistor (see Table 16)

R4<3:0>

R/W

0000

Gain reduction (see Table 15)

R5<7:0>

TS2

R/W

01101001

nd Byte of wake-up pattern

R6<7:0>

TS1

R/W

10010110

st Byte of wake-up pattern

R7<7:5>

T_OUT

R/W

000

Automatic time-out (see Table 21)

R7<4:0>

T_HBIT

R/W

01011

Bit rate definition (see Table 19)

R8<2:0>

T_AUTO

R/W

000

Artificial wake-up

T_AUTO=000

No artificial wake-up

T_AUTO=001

1 sec

T_AUTO=010

5 sec

T_AUTO=011

20 sec

T_AUTO=100

2 min

T_AUTO=101

15min

T_AUTO=110

1 hour

T_AUTO=111

2 hour

R9<6:0>

Reserved

000000

Reserved

R10<4:0>

RSSI1

RSSI channel 1

R11<4:0>

RSSI2

RSSI channel 2

R12<4:0>

RSSI3

RSSI channel 3

R13<7:0>

F_WAK

False wake-up register

Table 7. Default Values of Registers

Name

Type

Default

Value

Description

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