SX1231 SEMTECH [Semtech Corporation], SX1231 Datasheet - Page 3

• Manufacturer Part Number: SX1231
• Description: Low Power Integrated UHF Transceiver
• Manufacturer: SEMTECH [Semtech Corporation]

4.
5.
Rev 2 - Nov 2009
ADVANCED COMMUNICATIONS & SENSING
4.1.
4.2.
4.3.
4.4.
5.1.
5.2.
5.3.
5.4.
5.5.
Operating Modes .................................................................................................................................................. 33
Data Processing.................................................................................................................................................... 41
3.5.9. Cordic ....................................................................................................................................................... 26
3.5.10. FSK Demodulator ................................................................................................................................... 27
3.5.11. OOK Demodulator .................................................................................................................................. 27
3.5.12. Bit Synchronizer ..................................................................................................................................... 29
3.5.13. Frequency Error Indicator....................................................................................................................... 30
3.5.14. Automatic Frequency Correction ............................................................................................................ 31
3.5.15. Temperature Sensor .............................................................................................................................. 31
3.5.16. Timeout Function.................................................................................................................................... 32
4.2.1. Transmitter Startup Time........................................................................................................................... 34
4.2.2. Tx Start Procedure ................................................................................................................................... 34
4.2.3. Receiver Startup Time.............................................................................................................................. 34
4.2.4. Rx Start Procedure ................................................................................................................................... 36
4.2.5. Optimized Frequency Hopping Sequences .............................................................................................. 36
5.1.1. Block Diagram .......................................................................................................................................... 41
5.1.2. Data Operation Modes ............................................................................................................................. 41
5.2.1. SPI Interface............................................................................................................................................. 42
5.2.2. FIFO ......................................................................................................................................................... 43
5.2.3. Sync Word Recognition ............................................................................................................................ 44
5.2.4. Packet Handler ......................................................................................................................................... 45
5.2.5. Control ...................................................................................................................................................... 45
5.3.1. DIO Pins Mapping in Continuous Mode ................................................................................................... 46
5.3.2. DIO Pins Mapping in Packet Mode .......................................................................................................... 46
5.4.1. General Description.................................................................................................................................. 47
5.4.2. Tx Processing........................................................................................................................................... 47
5.4.3. Rx Processing .......................................................................................................................................... 48
5.5.1. General Description.................................................................................................................................. 48
5.5.2. Packet Format .......................................................................................................................................... 49
5.5.3. Tx Processing (without AES).................................................................................................................... 51
5.5.4. Rx Processing (without AES) ................................................................................................................... 52
5.5.5. AES .......................................................................................................................................................... 52
5.5.6. Packet Filtering......................................................................................................................................... 54
Basic Modes.................................................................................................................................................. 33
Listen mode ................................................................................................................................................... 37
AutoModes .................................................................................................................................................... 40
Overview ....................................................................................................................................................... 41
Continuous Mode .......................................................................................................................................... 47
Packet Mode ................................................................................................................................................. 48
Automatic Sequencer and Wake-Up Times .................................................................................................. 33
Control Block Description.............................................................................................................................. 42
Digital IO Pins Mapping................................................................................................................................. 45
Page 3
DATASHEET
www.semtech.com
SX1231