MCB2929 User's Guide

Serial Port

The MCB2929 board connects the on-chip serial UART to the ST3232 (IC11), which converts the logic signals to RS-232 voltage levels.

MCB2929 Board Serial Port

The serial port (COM0) is configured as a standard 3-wire interface. The DB9 connector is wired directly to the ST3232 serial UART. Refer to the figure below for details.

DB9 Connector Wiring