Semtech LR1110 - System Modes of Operation; LR1110 Modes Description

LR1110
User Manual Rev.1.0
UM.LR1110.W.APP March 2020
14 of 130
Semtech
www.semtech.com
2. System Modes
2.1 Modes Description
The different LR1110 operating modes are shown in Figure 2-1: LR1110 Modes and Transitions hereafter:
Figure 2-1: LR1110 Modes and Transitions
2.1.1 Standby
This mode is the default mode of the LR1110: it is the return state from all the other modes (expect for specific fallback
options), and the mode from which the transitions to the other modes are possible. All the commands to configure the
device should be issued in this mode.
Two clocks are available for the system: either the internal 32MHz RC oscillator (Standby RC mode), or an external 32MHz
crystal/TCXO (Standby Xosc mode). The RC clock is used by default for all the automatic mode transitions. The crystal/TCXO
clock allows faster transitions to other modes at the expense of a higher power consumption.
S_POR
S_STARTUP
S_BOOT
S_CAL
S_STBY_RC
S_DEEP_
SLEEP
S_SLEEP
S_STBY_
XOSC
S_FS
S_W IFI_
CAPTURE
S_GPS_
CAPTURE
S_RX
S_TX
S_DS P
S
_DE
EP
_
S
LE E
P
S
_
G
P
S
_
C
APT
U
R
E
S
_R
X
S
_
DS
P