SX1232IML View Datasheet(PDF) - Semtech Corporation

Part Name

Description

Manufacturer

SX1232IML

868 & 915MHz Ultra Low Power High Link Budget Integrated UHF Transceiver

Semtech Corporation 

SX1232

WIRELESS & SENSING

DATASHEET

The carrier frequency is programmed through RegFrf, split across addresses 0x06 to 0x08:

FRF = FSTEP × Frf(23,0)

Note

The Frf setting is split across 3 bytes. A change in the center frequency will only be taken into account when the

least significant byte FrfLsb in RegFrfLsb is written. This allows for more complex modulation schemes such as m-

ary FSK, where frequency modulation is achieved by changing the programmed RF frequency.

3.3.4. RC Oscillator

All timings in the low-power state of the Top Level Sequencer rely on the accuracy of the internal low-power RC oscillator.

This oscillator is automatically calibrated at the device power-up, and it is a user-transparent process.

For applications enduring large temperature variations, and for which the power supply is never removed, RC calibration

can be performed upon user request. RcCalStart in RegOsc triggers this calibration, and the flag RcCalDone will be set

automatically when the calibration is over.

Rev 3 - August 2012

Page 21

www.semtech.com

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