The Octal UART Core software for the D2698 is compatible with the SC2698. The three character receiver FIFO, increased baud rate, and configurable receiver and transmitter interrupts are all parts of the core. Two full-duplex asynchronous receiver/transmitter channels are offered by the D2698 Octal Universal Asynchronous Receiver/Transmitter (DUART), a communications tool. It offers a modem interface and directly connects to microprocessors. It may be utilized in polled or interrupt-driven systems. Each channel can have its own separate programming for its operating mode and data type. Also available are 26 fixed baud rates, a 16X clock generated by a programmable counter/timer, and an external 1X or 16X clock. Each receiver and transmitter can choose one of these options for their working speed. Using an external power source, the baud rate generator and counter/timer.