Datasheet
Table Of Contents
- 1. General Description
- 2. Electrical Characteristics
- 3. SX1272/73 Features
- 4. SX1272/73 Digital Electronics
- 4.1. The LoRaTM Modem
- 4.2. FSK/OOK Modem
- 4.2.1. Bit Rate Setting
- 4.2.2. FSK/OOK Transmission
- 4.2.3. FSK/OOK Reception
- 4.2.4. Operating Modes in FSK/OOK Mode
- 4.2.5. General Overview
- 4.2.6. Startup Times
- 4.2.7. Receiver Startup Options
- 4.2.8. Receiver Restart Methods
- 4.2.9. Top Level Sequencer
- 4.2.10. Data Processing in FSK/OOK Mode
- 4.2.11. FIFO
- 4.2.12. Digital IO Pins Mapping
- 4.2.13. Continuous Mode
- 4.2.14. Packet Mode
- 4.2.15. io-homecontrol® Compatibility Mode
- 4.3. SPI Interface
- 5. SX1272/73 Analog & RF Frontend Electronics
- 6. Description of the Registers
- 7. Application Information
- 8. Packaging Information
- 9. Revision History
www.semtech.comPage 53
SX1272/73
WIRELESS, SENSING & TIMING DATASHEET
Rev. 2 - July 2014
©2014 Semtech Corporation
4.2.6.4. Tx to Rx Turnaround Time
Figure 20. Tx to Rx Turnaround
Note The SPI instruction times are omitted, as they can generally be very small as compared to other timings (up to
10 MHz SPI clock).
4.2.6.5. Rx to Tx
Figure 21. Rx to Tx Turnaround
Tx Mode
1. set new Frf (*)
2. set Rx mode
Timeline
0TS_HOP
+TS_RE
(*) Optional
Rx Mode
Rx Mode
1. set new Frf (*)
2. set Tx mode
Timeline
0TS_HOP
+TS_TR
(*) Optional
Tx Mode