LTE Standard Module Series
EG25-GL_Hardware_Design 21 / 96
NET_STATUS 6
DO
Indicate the
module’s
network activity status
VDD_EXT
1.8 V power domain.
If unused, keep it
open.
USB Interface
Pin Name
Pin No.
I/O
Description
DC Characteristics Comment
USB_VBUS
71
PI
USB connection
detect
Vmax = 5.25 V
Vmin = 3.0 V
Vnom = 5.0 V
Typical: 5.0 V
If unused, keep it
open.
USB_DP
69
AIO
USB 2.0 differential
data (+)
USB 2.0 compliant.
Require differential
impedance of 90
Ω.
If unused, keep it
open.
USB_DM
70
AIO
USB 2.0 differential
data (-)
(U)SIM Interface
Pin Name
Pin No.
I/O
Description
DC Characteristics Comment
USIM_GND
10
-
Specified ground for
(U)SIM
USIM_VDD
14
PO
(U)SIM card power
supply
I
O
max = 50 mA
Low-voltage:
Vmax = 1.9 V
Vmin = 1.7 V
High-voltage:
Vmax = 3.05 V
Vmin = 2.7 V
Either 1.8 V or 3.0 V
is supported by the
module
automatically.
USIM_DATA
15
DIO
(U)SIM card data
USIM_VDD
USIM_CLK
16
DO
(U)SIM card clock
USIM_VDD
USIM_RST
17
DO
(U)SIM card reset
USIM_VDD
USIM_DET
13
DI
(U)SIM card hot-plug
detect
VDD_EXT
1.8 V power domain.
If unused, keep it
open.
Main UART Interface
Pin Name
Pin No.
I/O
Description
DC Characteristics Comment
MAIN_RI
62
DO
Main UART ring
indication
VDD_EXT
1.8 V power domain.
If unused, keep it
