XR17C152 - Exar Corporation

XR17C152 5V PCI BUS DUAL UART

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.

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 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 Selecta.