S2-LP datasheet(78/90 Pages) STMICROELECTRONICS

78 / 90 page

S2-LP

78/90

DocID029944 Rev 1

Name

Addr

Default

Bit

Field name

Description

AGCCTRL4

7:4

LOW_THRESHOLD_0

Low threshold 0 for the AGC

3:0

LOW_THRESHOLD_1

Low threshold 0 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 5.4.1.2)

CS_BLANKING

Do not fill the RX FIFO with data if the CS is above

threshold (see Section 5.5.9).

AS_ENABLE

1: enable the antenna switching (see Section 5.5.10).

2:0

AS_MEAS_TIME

Set the measurement time.

CLOCKREC2

7:5

CLK_REC_P_GAIN_SLOW

Clock recovery slow loop gain (log2).

CLK_REC_ALGO_SEL

Select the symbol timing recovery algorithm:



0: DLL



1: PLL.

3:0

CLK_REC_I_GAIN_SLOW

Set the integral slow gain for symbol timing recovery

(PLL mode only).

CLOCKREC1

7:5

CLK_REC_P_GAIN_FAST

Clock recovery fast loop gain (log2).

PSTFLT_LEN

Select the post filter length:



0: 8 symbols



1: 16 symbols.

3:0

CLK_REC_I_GAIN_FAST

Set the integral fast gain for symbol timing recovery

(PLL mode only).

PCKTCTRL6

7:2

SYNC_LEN

The number of bits used for the SYNC field in the

packet.

1:0

PREAMBLE_LEN[9:8]

The MSB of the number of '01 or '10' of the preamble

of the packet.

PCKTCTRL5

7:0

PREAMBLE_LEN[7:0]

The LSB of the number of '01 or '10' of the preamble

of the packet.

PCKTCTRL4

LEN_WID

The number of bytes used for the length field:



0: 1 byte



1: 2 bytes.

6:4

RESERVED

ADDRESS_LEN

1: include the ADDRESS field in the packet.

2:0

RESERVED

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