AS3933 datasheet(25/64 Pages) AMSCO

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ams Datasheet

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[v1-08] 2015-Sep-02

AS3933 − Detailed Description

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 only on positive 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 Figure 45)

R3<2:0>

FS_ENV

R/W

000

Envelop detector time constant (see Figure 44)

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 Figure 40)

R4<3:0>

R/W

0000

Gain reduction (see Figure 39)

R5<7:0>

TS2

R/W

01101001

2nd Byte of wake-up pattern

R6<7:0>

TS1

R/W

10010110

1st Byte of wake-up pattern

R7<7:5>

T_OUT

R/W

000

Automatic time-out (see Figure 49)

R7<4:0>

T_HBIT

R/W

01011

Bit rate definition (see Figure 48)

R8<7:5>

BAND_SEL

R/W

000

Band selection (see Figure 36)

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<7>

BLOCK_A

R/W

Disables AGC

R9<6:0>

000000

Reserved

Name

Type

Default

Value

Description

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