Yuga CLM920 TE5 LTE Module Hardware Manual

CLM920_TE5 LTE Module Hardware Manual
26
YUGA Information Technology Co.,Ltd
Pin Name
Pin
I/O
Description
LED_WWAN#
42
OC
Network status indicator
Table 3- 13 Network indicator status
Status
LED display status
No service
Keep ON
Modules are registered on non-4G networks
Flash slowly
Module registered on 4G network or module
registered on non-4G network for voice SMS
and other services
Flash fast
LED network indicator reference design is as follow:
Figure 3- 17 network indicator circuit diagram
LED light’s brightness can be adjusted by limiting the value of resistance, the maximum
current can be adjusted to 40mA .
3.10 Analog voice interface
CLM920_TE5 module provides a set of analog voice interfaces, including one differential
input signal (MIC + / MIC-) and one differential output signal (SPK + / SPK-).
3.10.1 Analog Voice Reference Design
Table 3- 14 Analog voice pin definitions
Pin
Signal Name
I/O
Description
1
MIC+
AI
Analog Audio input+
3
MIC-
AI
Analog Audio input-
5
SPK+/REC+
AO
Analog Audio output+
7
SPK-/REC-
AO
Analog Audio output-
Module
R
VBAT
LED_WWAN#