User Guide

16／35
12 UIM_CLK USIM_CLK DO USIM Clock Signal
13 REFCLK+ RESERVED — Reserved
14 UIM_RESET USIM_RST DO USIM Reset Signal
15 GND GND Ground
16 UIM_VPP RESERVED — Reserved
17 RESERVED RESERVED — Reserved
18 GND GND Ground
19 RESERVED WAKEUP_IN DI
Module Sleep
Control Pin
Allows to
sleep when
low level
20 W_DISABLE# W_DISABLE# DI
Disable RF
Communication
Valid when
low level
21 GND GND Ground
22 PERST# PERST# DI Reset Control Pin
Valid when
low level
23 PERn0 UART_RXD DI
Module receiving
end
24 3.3Vaux VBAT PI Power Input
25 PERp0 UART_RTS DO
Module request
to send
26 GND GND Ground
27 GND GND Ground
28 1.5V UART_CTS DI
Module request
to delete
uCloudlink M3B Mini PCIe-C _Hardware Design Guide_V1.0