System Modes; Modes Description; Standby; Figure 2-1: Lr1110 Modes And Transitions - Semtech LR1110 User Manual

2. System Modes

2.1 Modes Description

The different LR1110 operating modes are shown in

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.
LR1110
User Manual Rev.1.0
UM.LR1110.W.APP March 2020

Figure 2-1: LR1110 Modes and Transitions

S_POR
S_STARTUP
S_BOOT
S_CAL
S_STBY_RC
S_STBY_
S_DSP S_DSP
XOSC
S_RX S_RX S_FS
S_TX
Figure 2-1: LR1110 Modes and Transitions
www.semtech.com
S_SLEEP
S_DEEP_ S_DEEP_
SLEEP SLEEP
S_GPS_ S_GPS_
CAPTURE CAPTURE
S_WIFI_
CAPTURE
hereafter:
14 of 130
Semtech