SX1235IMLTRT View Datasheet(PDF) - Semtech Corporation

Part Name

Description

Manufacturer

SX1235IMLTRT

EN300 220 Category 1 Compliant Transceiver

Semtech Corporation 

SX1235

WIRELESS & SENSING

Table of contents

Section

DATASHEET

Page

5.2.1. SPI Interface.............................................................................................................................................. 53

5.2.2. FIFO .......................................................................................................................................................... 54

5.2.3. Sync Word Recognition............................................................................................................................. 55

5.2.4. Packet Handler.......................................................................................................................................... 56

5.2.5. Control....................................................................................................................................................... 56

5.3. Digital IO Pins Mapping .................................................................................................................................57

5.4. Continuous Mode ...........................................................................................................................................58

5.4.1. General Description................................................................................................................................... 58

5.4.2. Tx Processing............................................................................................................................................ 58

5.4.3. Rx Processing ........................................................................................................................................... 59

5.5. Packet Mode .................................................................................................................................................. 59

5.5.1. General Description................................................................................................................................... 59

5.5.2. Packet Format ........................................................................................................................................... 60

5.5.3. Tx Processing............................................................................................................................................ 63

5.5.4. Rx Processing ........................................................................................................................................... 63

5.5.5. Handling Large Packets ............................................................................................................................ 64

5.5.6. Packet Filtering.......................................................................................................................................... 64

5.5.7. DC-Free Data Mechanisms .......................................................................................................................66

5.5.8. Beacon Tx Mode ....................................................................................................................................... 67

5.6. io-homecontrol® Compatibility Mode ............................................................................................................. 67

6. Description of the Registers................................................................................................................................... 68

6.1. Register Table Summary ............................................................................................................................... 68

6.2. Register Map ..................................................................................................................................................71

7. Application Information .......................................................................................................................................... 85

7.1. Crystal Resonator Specification..................................................................................................................... 85

7.2. Reset of the Chip ........................................................................................................................................... 85

7.2.1. POR........................................................................................................................................................... 85

7.2.2. Manual Reset ............................................................................................................................................86

7.3. Reference Designs ........................................................................................................................................ 86

7.4. Top Sequencer: Listen Mode Examples ........................................................................................................89

7.4.1. Wake on Preamble Interrupt ..................................................................................................................... 89

7.4.2. Wake on SyncAddress Interrupt................................................................................................................ 91

7.5. Top Sequencer: Beacon Mode ......................................................................................................................94

7.5.1. Timing diagram.......................................................................................................................................... 94

7.5.2. Sequencer Configuration........................................................................................................................... 94

7.6. Example CRC Calculation .............................................................................................................................96

7.7. Example Temperature Reading .....................................................................................................................97

7.8. ETSI Category 1 Quick Start.......................................................................................................................... 98

7.8.1. PLL Settings .............................................................................................................................................. 98

Rev 1 - December 2012

Page 4

www.semtech.com

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