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Dual‑UART connector

One dual‑UART connector provides access to the MCC.

The UART port enables you to access the command‑line interface in the MCC and perform application software debugging.

Note

The UART I/O voltage at the connectors is 3.3V.

The following figure shows the dual‑UART connector, J57.

Figure A-9 Dual‑UART connector, J57A, upper, and J57B, lower


The following table shows the pin mapping for UART 0. This is the upper connector, J57A, of the dual‑UART connector, J57.

Table A-5 UART 0 connector, J57A, signal list

Pin Signal
A1 No connection
A2 SER0_RX
A3 SER0_TX
A4 SER0_DTR
A5 GND
A6 SER0_DSR
A7 SER0_RTS
A8 SER0_CTS
A9 No connection

The following table shows the pin mapping for UART 1. This is the lower connector, J57B, of the dual‑UART connector, J57.

Table A-6 UART 1 connector, J57B, signal list

Pin Signal
A1 No connection
A2 SER1_RX
A3 SER1_TX
A4 SER1_DTR
A5 GND
A6 SER1_DSR
A7 SER1_RTS
A8 SER1_CTS
A9 No connection
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