Quectel EG915U-EU Manual page 24

PCM_DIN 6
PCM_DOUT 7
RF Antenna Interface
Pin Name Pin No.
ANT_MAIN 60
ANT_BT/WIFI_
56
SCAN
GRFC Antenna Tuner Control
Pin Name Pin No.
GRFC1 76
GRFC2 77
SPI Interface
Pin Name Pin No.
SPI_CLK 26
SPI_CS 25
SPI_DIN 88
SPI_DOUT 64
ADC Interface
Pin Name Pin No.
ADC0 24
ADC1 2
Other Interfaces
EG915U-EU_Hardware_Design
DI PCM data input
DO PCM data output
I/O Description
AIO Main antenna interface
Wi-Fi/Bluetooth antenna
AIO
interface
Interface*
I/O Description
DO
Generic RF Controller
DO
I/O Description
DO SPI clock
DO SPI chip select
DI SPI master mode input
DO SPI master mode output
I/O Description
AI
General-purpose ADC
interface
AI
LTE Standard Module Series
V min = -0.3 V
IL
V max = 0.6 V
IL
V min = 1.26 V
IH
V max = 2.0 V
IH
V max = 0.45 V
OL
V min = 1.35 V
OH
DC
Comment
Characteristics
50 Ω impedance
50 Ω impedance.
If unused, keep it
open
DC
Comment
Characteristics
. If unused, keep
this pin open.
DC
Comment
Characteristics
V max = 0.45 V
OL
V min = 1.35 V
OH
V max = 0.45 V
OL
V min = 1.35 V
OH
V min = -0.3 V Just master
IL
V max = 0.6 V mode only.
IL
V min = 1.26 V
IH
V max = 2.0 V
IH
V max = 0.45V
OL
V min = 1.35V
OH
DC
Comment
Characteristics
Voltage range:
0 V to VBAT keep it open.
If unused,
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