Console Ports; Usb Recovery - Digi ConnectCore 8M Mini Hardware Reference Manual

Interfaces
Tag Connect footprint.
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Console ports

A dedicated USB micro AB-type port (J16) provides access to the two console ports of the
ConnectCore 8M Mini system-on-module:
i.MX 8M Mini Cortex A-53 serial debug port
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i.MX 8M Mini Cortex-M4 serial debug port
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The USB port is routed directly to the FTDI FT2232D bridge, which converts the USB bus into TTL
UARTs:
Debug port UART port
Cortex A-53 UART1
Cortex-M4 UART4
Note that UART4 is not connected to the FTDI chip by default. To access this UART, change the
following resistors:
Depopulate R152 and R154
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Populate R152 and R152
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You can also access the UART ports at TTL level through the J17 connector:
Pin Signal name
1 3V3_DBG
2 CONSOLE_TX CPU console port transmission line
3 CONSOLE_RX CPU console port receiver line
4 UART_M7_TX M7 console port transmission line
5 UART_M7_RX M7 console port receiver line
6 GND
Default console port settings
Baud rate: 115200
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Data: 8 bit
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Parity: none
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Stop: 1 bit
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Flow control: none
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USB recovery

The development board includes a dedicated USB micro AB-type port (J35) for recovery. This port
detects when a cable is plugged in and automatically switches the USB1 bus of the CPU from its
ConnectCore 8M Mini Development Board Reference Manual
Description
3.3 V power rail
Ground
Debug
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