S2-LPS datasheet(50/73 Pages) STMICROELECTRONICS

50 / 73 page

Name

Addr

Default

Bit

Field name

Description

AGCCTRL4

3:0

LOW_THRESHOLD_1

Low threshold 1 for

the AGC

AGCCTRL3

7:0

LOW_THRESHOLD_

SEL

Low threshold

selection (defined

in the AGCCTRL4).

Bitmask for each

attenuation step.

AGCCTRL2

7:6

RESERVED

FREEZE_ON_SYNC

Enable the AGC

algorithm to be frozen

on SYNC

RESERVED

3:0

MEAS_TIME

AGC measurement

time

AGCCTRL1

7:4

HIGH_THRESHOLD

High threshold for the

AGC

3:0

RESERVED

AGCCTRL0

AGC_ENABLE

0: disabled

1: enabled

RESERVED

5:0

HOLD_TIME

Hold time for after

gain adjustment for

the AGC.

ANT_SELECT_CONF

RESERVED

6:5

EQU_CTRL

ISI cancellation

equalizer:

•

00b:

equalization

disabled

•

01b: single pass

equalization

•

10b: dual pass

equalization.

(see

Section 4.4.1.2 ISI

cancellation 4-

(G)FSK)

CS_BLANKING

Do not fill the RX FIFO

with data if the CS is

above threshold (see

Section 4.4.5.9 CS

blanking).

AS_ENABLE

1: enable the antenna

switching (see

Section 4.4.5.10 Ante

nna switching).

2:0

AS_MEAS_TIME

Set the measurement

time.

CLOCKREC2

7:5

CLK_REC_P_GAIN_S

LOW

Clock recovery slow

loop gain (log2).

CLK_REC_ALGO_SE

Select the symbol

timing recovery

algorithm:

•

0: DLL

S2-LPS

DS13831 - Rev 1

page 50/73

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