User's Manual
Page 8 of 31
12 RUIM_CLK RUIM CLK
RUIM Interface
14 RUIM_RESET RUIM Reset
RUIM Interface
16 I2C_SCL* IIC Clock
IIC Interface
18 GND Ground
20
W_DISABLE_N External Disable signal Active low signal. This signal is used by the
system to disable radio operation on add-in
cards that implement radio frequency
applications
22 AUXADC1* ADC Input
Analog signals input via this pin, this signal
can be used by U6300
24 3.3VAUX Power Supply
26 GND Ground
28
I2C_SDA* IIC Data IIC Interface
30 UART_DCD* DCD Signal of UART
UART Interface
32
UART1_RI* Ring Of UART UART Interface
34 GND Ground
36 USB_DM_IN USB Data-
USB Interface
38 USB_DP_IN USB Data+
USB Interface
40 GND Ground
42
LED_WWAN Led control Signal Active low signal
44 GPIO_TBD1* GPIO TBD
GPIO For Reserved
46 UART_DTR* DTR of UART
UART Interface
48 UART1_DSR* DSR of UART
UART Interface
50 GND Ground
52 3.3VAUX Power Supply
Notes:* Only support on LCT_U6300_001
2.1.3 RF interface
U6300 uses HRS’s U.FL-R-SMT-1(10) RF connector on the module side. There are three RF connector on U6300,from
right to left: main antenna / GPS antenna* / diversity antenna.
The RF connector is showed in figure 2-6.










