XR17C152

www.DataSheet4U.com áç JUNE 2004 XR17C152 5V PCI BUS DUAL UART REV. 1.2.0 GENERAL DESCRIPTION The XR17C1521 (152) 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 requirement in communication systems. The global interrupt source register provides a complete interrupt status indication for both channels to speed up interrupt parsing. Each UART is independently controlled and has its own 16C550 compatible 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 IrDA (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 High Performance Dual PCI UART PCI Bus 2.2 Target Interface Compliance 5V PCI Bus Compliant up to 33MHz Clock 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 Compatible 5G Register Set 64-byte Transmit and Receive ...