S2-LP datasheet(79/90 Pages) STMICROELECTRONICS

79 / 90 page

S2-LP

DocID029944 Rev 1

79/90

Name

Addr

Default

Bit

Field name

Description

PCKTCTRL3

7:6

PCKT_FRMT

Format of packet:



0: Basic



1: 802.15.4g



2: UART OTA



3: Stack

(see section 6 )

5:4

RX_MODE

RX mode:



0: normal mode



1: direct through FIFO



2: direct through GPIO

FSK4_SYM_SWAP

Select the symbol mapping for 4(G)FSK.

BYTE_SWAP

Select the transmission order between MSB and LSB.

1:0

PREAMBLE_SEL

Select the preamble pattern.

PCKTCTRL2

7:6

RESERVED

FCS_TYPE_4G

This is the FCS type in header field of 802.15.4g

packet.

FEC_TYPE_4G/STOP_BIT



If the 802.15.4 mode is enabled, this is the

FCS type in header field of 802.15.4g packet.

Select the FEC type of 802.15.4g packet:



0: NRNSC



1: RSC.



If the UART packet is enabled, this is the value

of the STOP_BIT.

INT_EN_4G/START_BIT



If the 802.15.4 mode is enabled, 1: enable the

interleaving of 802.15.4g packet.



If the UART packet is enabled, this is the value

of the START_BIT.

MBUS_3OF6_EN

1: enable the 3-out-of-6 encoding/decoding.

MANCHESTER_EN

1: enable the Manchester encoding/decoding.

FIX_VAR_LEN

Packet length mode:



0: fixed



1: variable (in variable mode the field

LEN_WID of PCKTCTRL3 register must be

configured)

PCKTCTRL1

7:5

CRC_MODE

CRC field:



0: no CRC field



1: CRC using poly 0x07



2: CRC using poly 0x8005



3: CRC using poly 0x1021



4: CRC using poly 0x864CBF



5: CRC using poly 0x04C011BB7

WHIT_EN

1: enable the whitening mode.

3:2

TXSOURCE

Tx source data:



0: normal mode



1: direct through FIFO



2: direct through GPIO



3: PN9

SECOND_SYNC_SEL

In TX mode:



0 select the primary SYNC word



1 select the secondary SYNC word.

In RX mode, if 1 enable the dual SYNC word

detection mode.

FEC_EN

1: enable the FEC encoding in TX or the Viterbi

decoding in RX.

PCKTLEN1

7:0

PCKTLEN1

MSB of length of packet in bytes.

PCKTLEN0

7:0

PCKTLEN0

LSB of length of packet in bytes.

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