Product Info

LTE Module Series
EC25 Mini PCIe Hardware Design
EC25_Mini_PCIe_Hardware_Design Confidential / Released 19 / 46
Table 4: Description of Pins
Pin No.
Mini PCI Express
Standard Name
EC25 Mini PCIe
Pin Name
I/O Description Comment
1 WAKE# WAKE# OC
Output signal can be used
to wake up the host.
2 3.3Vaux VCC_3V3 PI 3.3V DC supply
3 COEX1 RESERVED Reserved
4 GND GND Mini card ground
5 COEX2 RESERVED Reserved
6 1.5V NC
7 CLKREQ# RESERVED Reserved
8 UIM_PWR USIM_VDD PO
Power source for the USIM
card
9 GND GND Mini card ground
10 UIM_DATA USIM_DATA IO USIM data signal
11 REFCLK- UART_RX DI UART receive data
Connect to
DTE’s TX
12 UIM_CLK USIM_CLK DO USIM clock signal
13 REFCLK+ UART_TX DO UART transmit data
Connect to
DTE’s RX
14 UIM_RESET USIM_RST DO USIM reset signal
15 GND GND Mini card ground
16 UIM_VPP RESERVED Reserved
17 RESERVED RI DO
Output signal can be used
to wake up the host.
18 GND GND Mini card ground
19 RESERVED RESERVED Reserved
20 W_DISABLE# W_DISABLE# DI
Disable wireless
communications
Pull-up by
default
Active low
21 GND GND Mini card ground
22 PERST# PERST# DI Functional reset to the card Active low
23 PERn0 UART_CTS DI UART clear to send
Connect to
DTE’s RTS