Quectel LTE-A Module Series - COEX UART Interface

LTE-A Module Series
EM120R-GL&EM160R-GL Hardware Design
EM120R-GL&EM160R-GL_Hardware_Design 50 / 79
3.10.6. ANT_CONFIG Signal
EM160R-GL provides an ANT_CONFIG signal for antenna configuration, however, EM120R-GL does not
support it since EM120R-GL only supports 2 antennas. The signal is sent by a host system to
EM160R-GL module. ANT_CONFIG is an input port which is pulled high internally by default. The
definition of ANT_CONFIG signal is shown as below table.
Table 21: Pin Definition of ANT_COMNFIG of EM160R-GL
3.11. COEX UART Interface*
EM120R-GL&EM160R-GL provide one COEX UART interface. The following table shows the COEX
UART interface pin definition.
Table 22: Pin Definition of COEX UART Interface
“*” means under development.
ANT_CONFIG Level
Function
High/Floating
Support 2 antennas
Low Level
Support 4 antennas
Pin Name
Pin No.
I/O
Description
Comment
COEX3
60
IO
GPIO
1.8 V power domain
COEX_RXD
62
IO
COEX UART Interface
1.8 V power domain
COEX_TXD
64
IO
1.8 V power domain
NOTE