Peripherals 6
miriac SBC-LX2160A User Manual
V 1.6
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© MicroSys Electronics GmbH 2021
6.9.3 USB UART Bridge Port
UART1 of the MPX-LX2160 Module is converted via a MCP2221 for console
access (bootloader and standard linux BSP). The usb-to-serial converter always
operates in device mode.
The USB UART Bridge is available on a Micro USB 2.0 type B connector.
The MCP2221 is externally powered via VBUS supplies by the host. In oder to gain
access to early boot messages, make sure that the MCP2221 device is detected
by the host before the SBC-LX2160 is powered up.
Part Reference:
ST29
Manufacturer:
Würth Elektronik
Type:
629105150521
Used with:
Micro USB
Type B cables
The following table shows the internal connections:
ST29
ST1
LX2160A
Pin
Signal
Pin
Signal
Pin
Name
1
Vbus+
2
D-
J47
A50
UART1_SIN
→
B5
UART1_SIN
3
D+
B50
UART1_SOUT
←
B6
UART1_SOUT
4
ID
5
GND
Table 6-23 Console pin assignment