Quectel LTE Standard Module Series, Hardware Design

Page: 18 / 55

LTE Standard Module Series
EG21-G Mini PCIe Hardware Design
EG21-G_Mini_PCIe_Hardware_Design 17 / 54
30 SMB_CLK I2C_SCL DO I2C serial clock
Require
external pull-up
to 1.8V.
31 PETn0 DTR DI Sleep mode control
32 SMB_DATA I2C_SDA IO I2C serial data
Require
external pull-up
to 1.8V.
33 PETp0 RESERVED Reserved
34 GND GND Mini card ground
35 GND GND Mini card ground
36 USB_D- USB_DM IO
USB differential data
(-)
Require
differential
impedance of
90
Ω.
37 GND GND Mini card ground
38 USB_D+ USB_DP IO
USB differential data
(+)
Require
differential
impedance of
90
Ω.
39 3.3Vaux VCC_3V3 PI
3.0V~3.6V, typically
3.3V DC supply
40 GND GND Mini card ground
41 3.3Vaux VCC_3V3 PI
3.0V~3.6V, typically
3.3V DC supply
42 LED_WWAN# LED_WWAN# OC
LED signal for
indicating the network
status of the module
Active low
43 GND GND Mini card ground
44 LED_WLAN# USIM_PRESENCE DI
(U)SIM card insertion
detection
45 RESERVED PCM_CLK IO PCM clock signal
46 LED_WPAN# RESERVED Reserved
47 RESERVED PCM_DOUT DO PCM data output
48 1.5V NC Not connected
49 RESERVED PCM_DIN DI PCM data input