DESCRIPTION

The XR16C8721 (872) is a dual universal asynchronous receiver and transmitter (UART) with a 1284 bi-directional parallel port and ISA Bus Plug-and-Play (PnP) interface. The PnP interface supports auto configuration for desktop and embedded PC computers.

FEATURES

? Plug and Play ISA Bus Specification Compliant

- Auto Configuration

- Direct Connection, Needing no External Buffers

- Resource Data in External 4K EEPROM

- 10-Interrupts IRQ3-7, IRQ9-12, IRQ15

? Manual Configuration for Standard COM1-COM-4 and LPT1-LPT2

? IEEE 1284 Compliant

- Bidirectional Host Port

- Level-II Electrical Interface, Needing no External Transceivers

- Standard Centronics/ECP/EPP Mode

- 16-byte FIFO in ECP mode

? Dual UART Software Compatible with 16C550

? 128-Byte Transmit and Receiver FIFOs Reduce CPU Interrupt

? FIFO Counters in Transmitter and Receiver

? Automatic RTS/CTS Flow Control with Hysteresis to Increase Data Throughput

? IrDA Infrared Pulse Shaping Encoder/Decoder for up to 115.2Kbps Data Rate

? Up to 460.8 Kbps Standard Serial Data Rate

? +5V and +3.3V Operation

? 100-pin Quad Flat Package (14x20mm)

? Reference PC ISA Card Design Available

? Windows295, 98 and NT4.0 Device Drivers are Available

s

APPLICATIONS

? Multi-function PC/ISA Bus Card with RS-232/RS-422/RS-485 Interface and Printer/parallel Port

? Embedded Systems

? Portable Infrared Wireless Systems

? High-speed Bidirectional Parallel Port

? High-speed Serial Ports