Table 6-2: Settcxomode Command; Table 6-3: Tcxo Supply Voltage Programming Values - Semtech LR1110 User Manual

6.2.3.2 SetTcxoMode
The SetTcxoMode( ) command configures the chip for a connected TCXO.

Table 6-2: SetTcxoMode Command

Byte 0
Data from Host 0x01
Data to Host Stat1
•
RegTcxoTune allows to tune the output voltage on the TCXO supply pin VTCXO, according to
Voltage programming values

Table 6-3: TCXO Supply Voltage programming values

RegTcxoTune
0x00
0x01
0x02
0x03
0x04
0x05
0x06
0x07
•
Delay represents the maximum duration for the 32MHz oscillator to start and stabilize (in 30.52us steps). If the 32 MHz
oscillator from the TCXO is not detected internally at the end the delay period, the device internal firmware triggers a
HF_XOSC_START_ERR error.
Delay set to 0 (default value) disables the TCXO mode.

The command will operate only in Standby RC mode, otherwise it will return CMD_FAIL on the next GetStatus command.
LR1110
User Manual Rev.1.0
UM.LR1110.W.APP March 2020
1 2
0x17 RegTcxoTune
IrqStatus
Stat2
(31:24)
TCXO Supply Voltage (typ)
1.6
1.8
1.8 V
2.2 V
2.4 V
2.7 V
3.0 V
3.3 V
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3 4
Delay Delay
(23:16) (15:8)
IrqStatus IrqStatus
(23:16) (15:8)
Table 6-3: TCXO Supply
5
Delay
(7:0)
IrqStatus
(7:0)
40 of 130
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