SX1239 View Datasheet(PDF) - Semtech Corporation

Part Name

Description

Manufacturer

SX1239

Low Power Integrated UHF Receiver

Semtech Corporation 

SX1239

ADVANCED COMMUNICATIONS & SENSING

DATASHEET

3.4.18. Temperature Sensor ...............................................................................................................................29

3.4.19. Timeout Function.................................................................................................................................... 29

4. Operating Modes .................................................................................................................................................. 30

4.1. Basic Modes.................................................................................................................................................. 30

4.2. Automatic Sequencer and Wake-Up Times .................................................................................................. 30

4.2.1. Receiver Startup Time.............................................................................................................................. 30

4.2.2. Rx Start Procedure ................................................................................................................................... 32

4.2.3. Optimized Frequency Hopping Sequences .............................................................................................. 32

4.3. Listen Mode ................................................................................................................................................... 33

4.3.1. Timings ..................................................................................................................................................... 33

4.3.2. Criteria ...................................................................................................................................................... 34

4.3.3. End of Cycle Actions ................................................................................................................................ 34

4.3.4. RC Timer Accuracy .................................................................................................................................. 35

4.4. AutoModes .................................................................................................................................................... 36

5. Data Processing.................................................................................................................................................... 37

5.1. Overview ....................................................................................................................................................... 37

5.1.1. Block Diagram .......................................................................................................................................... 37

5.1.2. Data Operation Modes ............................................................................................................................. 37

5.2. Control Block Description.............................................................................................................................. 38

5.2.1. SPI Interface............................................................................................................................................. 38

5.2.2. FIFO ......................................................................................................................................................... 39

5.2.3. Sync Word Recognition ............................................................................................................................ 40

5.2.4. Packet Handler ......................................................................................................................................... 41

5.2.5. Control ...................................................................................................................................................... 41

5.3. Digital IO Pins Mapping ................................................................................................................................. 42

5.3.1. DIO Pins Mapping in Continuous Mode ................................................................................................... 42

5.3.2. DIO Pins Mapping in Packet Mode .......................................................................................................... 42

5.4. Continuous Mode .......................................................................................................................................... 43

5.4.1. General Description.................................................................................................................................. 43

5.4.2. Rx Processing .......................................................................................................................................... 43

5.5. Packet Mode ................................................................................................................................................. 44

5.5.1. General Description.................................................................................................................................. 44

5.5.2. Packet Format .......................................................................................................................................... 44

5.5.3. Processing (without AES)......................................................................................................................... 47

5.5.4. AES .......................................................................................................................................................... 47

5.5.5. Handling Large Packets ........................................................................................................................... 48

5.5.6. Packet Filtering......................................................................................................................................... 48

5.5.7. DC-Free Data Mechanisms ...................................................................................................................... 50

6. Configuration and Status Registers ...................................................................................................................... 52

6.1. General Description ...................................................................................................................................... 52

6.2. Common Configuration Registers ................................................................................................................. 55

6.3. Receiver Registers ........................................................................................................................................ 58

Rev 3 - Jan 2011

Page 3

www.semtech.com

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