S2-LPQTR datasheet(3/90 Pages) STMICROELECTRONICS

3 / 90 page

S2-LP

Contents

DocID029944 Rev 1

3/90

5.4.2

Amplitude modulation ....................................................................... 33

5.4.3

Direct polar mode ............................................................................. 34

5.4.4

Test modes....................................................................................... 35

5.4.5

Data rate ........................................................................................... 35

5.5

Receiver .......................................................................................... 36

5.5.1

Automatic frequency compensation ................................................. 36

5.5.2

Automatic gain control ...................................................................... 37

5.5.3

Symbol timing recovery .................................................................... 38

5.5.4

RX channel filter bandwidth.............................................................. 39

5.5.5

Intermediate frequency setting ......................................................... 39

5.5.6

RX timer management...................................................................... 39

5.5.7

Receiver data modes........................................................................ 40

5.5.8

Receiver quality indicators ............................................................... 41

5.5.9

CS blanking ...................................................................................... 42

5.5.10

Antenna switching ............................................................................ 42

5.6

Transmitter ...................................................................................... 43

5.6.1

PA configuration ............................................................................... 43

5.6.2

Transmitter data modes.................................................................... 44

5.6.3

Data FIFO ......................................................................................... 44

5.7

Integrated RCO ............................................................................... 46

5.8

Low battery indicator ....................................................................... 47

5.9

Voltage reference............................................................................ 47

Operating modes ........................................................................... 48

6.1

Command list .................................................................................. 49

6.2

State transaction response time...................................................... 50

6.3

Sleep states .................................................................................... 50

Packet handler engine .................................................................. 51

7.1

BASIC packet format....................................................................... 51

7.2

STack packet .................................................................................. 53

7.3

802.15.4g packet............................................................................. 54

7.4

UART over the air packet format..................................................... 55

7.5

Wireless MBUS packet (W-MBUS, EN13757-4) ............................. 56

7.6

Payload transmission order............................................................. 56

7.7

Automatic packet filtering ................................................................ 56

7.8

Data coding and integrity check ...................................................... 57

7.8.1

FEC................................................................................................... 57

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