XR17C154 Datasheet | Exar

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 munication systems. The global interrupt source register provides a plete interrupt status indication for all 4 channels to speed up interrupt parsing. Each UART is independently controlled and has its own 16C550 patible 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, Ir DA (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 pliance - 5V PCI Bus pliant 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 patible 5G (Fifth Gen Register Set - 64-byte Transmit and Receive FIFOs - Transmit and Receive FIFO Level Counters - Automatic RTS/CTS or DTR/DSR Flow Control - Automatic Xon/Xoff Software Flow Control - Automatic RS485 Half-duplex Control Output with 16 Selectable Turn-around Delay - Infrared (Ir DA 1.0) Data Encoder/Decoder - Programmable Data Rate with Prescaler - Up to 6.25 Mbps Serial Data Rate at 8X and 5V - Eight Multi-Purpose Inputs/outputs - A General Purpose 16-bit Timer/Counter - Sleep Mode with Automatic Wake-up Indicator - Same Package and Pin-out as the XR17C158, XR17D154 and XR17D158 UART - 20x20x1.4mm 144-TQFP package APPLICATIONS - Remote Access Servers - Ethernet Network to Serial...