Product Info

LTE Standard Module Series
EC21 Mini PCIe Hardware Design
EC21_Mini_PCIe_Hardware_Design 22 / 64
7 CLKREQ# RESERVED Reserved
8 UIM_PWR USIM_VDD PO
Power source for the
(U)SIM card
9 GND GND Mini card ground
10 UIM_DATA USIM_DATA IO Data signal of (U)SIM card
11 REFCLK- UART_RX DI UART receive data
Connect to
DTE’s TX
12 UIM_CLK USIM_CLK DO Clock signal of (U)SIM card
13 REFCLK+ UART_TX DO UART transmit data
Connect to
DTE’s RX
14 UIM_RESET USIM_RST DO Reset signal of (U)SIM card
15 GND GND Mini card ground
16 UIM_VPP RESERVED Reserved
17 RESERVED RI DO
Output signal to wake up
the host
18 GND GND Mini card ground
19 RESERVED RESERVED Reserved
20 W_DISABLE# W_DISABLE# DI Airplane mode control
Pulled up by
default.
Active low.
21 GND GND
Mini card ground
22 PERST# PERST# DI Fundamental reset signal
Pulled up by
default.
Active low.
23 PERn0 UART_CTS DI UART clear to send
Connect to
DTE’s RTS
24 3.3Vaux RESERVED Reserved
25 PERp0 UART_RTS DO UART request to send
Connect to
DTE’s CTS
26 GND GND Mini card ground
27 GND GND Mini card ground
28 1.5V NC Not connected