XR16V794IV(2007) Datasheet PDF - Exar Corporation

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