GENERAL DESCRIPTION

The XR16V7941 (794), is a 2.25V to 3.6V octal Universal Asynchronous Receiver and Transmitter (UART) with 5V tolerant serial (modem) inputs. The highly integrated device is designed for high bandwidth requirement in communication systems.

FEATURES

• 2.25V to 3.6V with 5V Tolerant Serial Inputs

• Single Interrupt output for all 4 UARTs

• A Global Interrupt Source Register for all 4 UARTs

• 5G “Flat” UART Registers for easier programming

• Simultaneous Initialization of all UART channels

• A General Purpose Command-driven 16-bit Timer/counter

• Sleep Mode with Wake-up Indication

• Highly Integrated Device for Space Saving

• Each UART is independently controlled with:

■ 16C550 Compatible 5G Register Set

■ 64-byte Transmit and Receive FIFOs

■ Fractional Baud Rate Generator

■ Transmit and Receive FIFO Level Counters

■ Programmable TX and RX FIFO Trigger Level

■ Automatic RTS/CTS or DTR/DSR Flow Control

■ Automatic Xon/Xoff Software Flow Control

■ RS485 Half-Duplex Control Output with Selectable Turn-around Delay

■ Infrared (IrDA 1.0) Data Encoder/Decoder

■ Programmable Data Rate with Prescaler

• Up to 8 Mbps Serial Data Rate

• Pin compatible to XR16L784. Same 64-pin LQFP Package (10x10x1.4 mm)

APPLICATIONS

• Remote Access Servers

• Ethernet Network to Serial Ports

• Network Management

• Factory Automation and Process Control

• Point-of-Sale Systems

• Multi-port RS-232/RS-422/RS-485 Cards