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