XR17L152IM Datasheet | Exar

DESCRIPTION The XR17L1521 (L152) is a monolithic dual PCI Bus Universal Asynchronous Receiver and Transmitter (UART) in Exar’s PCI Bus UART family. The device is designed to meet today’s 32-bit PCI Bus and high bandwidth requirements in munication systems. The global interrupt source register provides a plete interrupt status indication for both channels to speed up interrupt parsing. Each UART is independently controlled and has its own 16C550 patible 5G (Fifth Generation) register set, transmit and receive FIFOs of 64 bytes, fully programmable transmit and receive FIFO trigger levels, transmit and receive FIFO level counters, automatic hardware flow control with programmable hysteresis, automatic software (Xon/Xoff) flow control, automatic half-duplex control output, wireless Ir DA (Infrared Data Association) infrared encoder/decoder, 8 multi-purpose definable inputs/outputs, and a 16-bit general purpose timer/counter. NOTE: 1 Covered by U.S. Patents #5,649,122, #5,949,787 FEATURES APPLICATIONS - Network Management - Factory Automation and Process Control - Ethernet Network to Serial Ports - Point-of-Sale Systems - Multi serial ports RS-232/RS-422/RS-485 Cards - High Performance DUART - PCI Bus 2.2 Target Interface pliance - 3.3 V PCI Bus pliant up to 33 MHz Clock - 5 Volt Tolerant Serial Inputs - 32-bit PCI Bus Interface with EEPROM Interface - A Global Interrupt Source Register for both UARTs - Data Transfer in Byte, Word and Double-word - Data Read/Write Burst Operation - Each UART is independently controlled with: - 16C550 patible 5G Register Set - 64-byte Transmit and Receive FIFOs - 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 - Automatic RS485 Half-duplex Control Output Selectable Turn-around Delay (0 to 15 bit-times) with - Eight Multi-Purpose Inputs/outputs - A General Purpose 16-bit Timer/Counter - Sleep Mode with Automatic...