5G Module Series
5G-M2_EVB_User_Guide 18 / 34
J0601
J0101
USB_DM
USB_DP
USB_SS_TX_P
USB_SS_TX_M
USB_SS_RX_P
USB_SS_RX_M
U0601
USB_DM
USB_DP
USB_SS_RX_P
USB_SS_RX_M
USB_SS_TX_P
USB_SS_TX_M
TP0101(DP)
0
Ω
0
Ω
HD3SS3220
M.2 Module
TP0102(DM)
TP0605(GND)
USB Type-C
Figure 8: Block Diagram of Connections Between the Module and the USB Type-C Interface
3.5. USB-TO-UART Interface (J0901/J0902)
The EVB provides a USB-TO-UART interface (J0901/J0902). This interface is used for Linux console and
converting debug log UART signal to USB 2.0 signal.
Before using the USB-TO-UART interface, DBG_RXD and DBG_TXD of the module should be connected
to the corresponding positions of J0902.2 (RXD_1V8) and J0902.3 (TXD_1V8) on the EVB respectively. A
connection example of RM500Q-GL module is shown as below.
J0901
USB-TO-UART
DBG_RXD
DBG_TXD
1
2
3
4
5
RM500Q-GL
J0902
Figure 9: USB-TO-UART Interface (J0901/J0902)