Product Info

LTE Standard Module Series
EC21_Series_Mini_PCIe_Hardware_Design
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8 UIM_PWR USIM_VDD PO (U)SIM card power supply
9 GND GND Mini card ground
10 UIM_DATA USIM_DATA DIO (U)SIM card data
11 REFCLK- UART_RX DI UART receive
Connect to
DTE’s Tx.
12 UIM_CLK USIM_CLK DO (U)SIM card clock
13 REFCLK+ UART_TX DO UART transmit
Connect to
DTE’s Rx.
14 UIM_RESET USIM_RST DO (U)SIM card reset
15 GND GND Mini card ground
16 UIM_VPP RESERVED Reserved
17 RESERVED RI DO Ring indication
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
Pulled up by
default.
Active LOW.
23 PERn0 UART_CTS DI
DCE clear to send signal
from DTE
Connect to
DTE’s RTS
24 3.3Vaux RESERVED Reserved
25 PERp0 UART_RTS DO
DCE request to send signal
from DTE
Connect to
DTE’s CTS
26 GND GND Mini card ground
27 GND GND Mini card ground
28 1.5V NC Not connected
29 GND GND Mini card ground
30 SMB_CLK I2C_SCL DO
I2C serial clock
(for external codec)
Require
external pull-up