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SPI_DIN
88
SPI_DOUT
64
ADC Interface
Pin Name
Pin No.
ADC0
24
ADC1
2
Analog Audio Interfaces
Pin Name
Pin No.
MIC_N
119
MICBIAS
120
SPK_P
121
SPK_N
122
MIC_P
126
USB_BOOT
Pin Name
Pin No.
USB_BOOT
75
PSM
Interface*
Pin Name
Pin No.
EG915U_Series_Hardware_Design
DI
SPI master mode input
DO
SPI master mode output
I/O
Description
AI
General-purpose ADC
interface
AI
I/O
Description
Microphone analog input
AI
(-)
Bias voltage output for
PO
microphone
Analog audio differential
AO
output (+)
Analog audio differential
AO
output (-)
Microphone analog input
AI
(+)
I/O
Description
Control pin for module to
DI
enter download mode
I/O
Description
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 Characteristics
Voltage range:
0.1 V to VBAT
DC Characteristics
Vo = 2.2–3.0 V
Vnom = 2.2 V
DC Characteristics
V
min = -0.3 V
IL
V
max = 0.6 V
IL
V
min = 1.26 V
IH
V
max = 2.0 V
IH
DC Characteristics
Comment
If unused, keep it
open.
Comment
Comment
1.8 V power
domain.
Active high.
A circuit that
enables the
module to
enter the
download
mode must be
reserved.
Comment
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