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XR17C154

Exar Corporation

5V PCI BUS QUAD UART

www.DataSheet4U.com áç JUNE 2004 XR17C154 5V PCI BUS QUAD UART REV. 1.3.0 GENERAL DESCRIPTION The XR17C1541 (154) is ...


Exar Corporation

XR17C154

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Description
www.DataSheet4U.com áç JUNE 2004 XR17C154 5V PCI BUS QUAD UART REV. 1.3.0 GENERAL DESCRIPTION The XR17C1541 (154) is a quad PCI Bus Universal Asynchronous Receiver and Transmitter (UART) with same package and pin-out as the Exar XR17x158 octal UARTs. The device is designed to meet today’s 32-bit PCI Bus and high bandwidth requirements in communication systems. The global interrupt source register provides a complete interrupt status indication for all 4 channels to speed up interrupt parsing. Each UART is independently controlled and has its own 16C550 compatible 5G 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, IrDA (Infrared Data Association) 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 Quad 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 all 4 UARTs Data Transfer in Byte, Word and Double-word Data Read/Write Burst Operation Each UART is independently Controlled with: 16C550 Compatible 5G (Fifth Gen Register Set 64-byte Transmit and Receive FIFOs Transmit and Receive FIFO Level Co...




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