Commands; Setpaconfig; Settxparams; Table 9-3: Setpaconfig Command - Semtech LR1110 User Manual

9.5 Commands

9.5.1 SetPaConfig

The command SetPaConfig( ) selects which PA to use and configures the supply of this PA.

Table 9-3: SetPaConfig Command

Byte 0
Data from Host 0x02
Data to Host Stat1
• PaSel= 0x00 selects the Low Power PA. PaSel= 0x01 selects the High Power PA.
• RegPaSupply= 0x00 powers the PA from the internal regulator. RegPaSupply= 0x01 powers the PA from VBAT. The user
must use RegPaSupply = 0x01 whenever TxPower > 14.
• PaDutyCycle controls the duty cycle of the High Power PA and Low Power PA.

Table 9-4: DutyCycle Parameter

Control
Allowed Range
Default value
•
PaHPSel controls the size of the High Power PA.

9.5.2 SetTxParams

The command SetTxParams( ) allows setting the Tx Power and the Ramp Time of the selected PA. SetPaConfig( ) must be sent
prior to this command.

Table 9-5: SetTxParams Command

Byte
Data from Host
Data to Host
•
TxPower defines the output power in dBm in a range of
- 17 dBm (0xEF) to +14 dBm (0x0E) by step of 1 dB if the High Efficiency PA is selected

LR1110
User Manual Rev.1.0
UM.LR1110.W.APP March 2020
1
0x15 PaSel
IrqStatus
Stat2
(31:24)
Low Power PA
20%<DutyCycle<48%
0<PaDutyCycle<7
0
0x02 0x11
Stat1 Stat2
www.semtech.com
2 3
RegPaSupply
IrqStatus
(23:16)
DutyCycle = 20% + 4%*PaDutyCycle
DutyCycle=36%
PaDutyCycle=4
1 2
TxPower
IrqStatus(31:24)
4 5
PaDutyCycle PaHPSel
IrqStatus IrqStatus
(15:8) (7:0)
High Power PA
20%<DutyCycle<36%
0<PaDutyCycle<6
3
RampTime
IrqStatus(23:16)
82 of 130
Semtech