XR17L152CM datasheet, PDF - EEWORLD Datasheet

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XR17L152CM: Description3.3V PCI BUS DUAL UART; File Size302KB，55 Pages; ManufacturerExar [Exar Corporation]

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XR17L152CM Overview

3.3V PCI BUS DUAL UART

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AUGUST 2003

DISCONTINUED

XR17L152

3.3V PCI BUS DUAL UART

REV. 1.1.0

GENERAL DESCRIPTION

The XR17L152

(L152) 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

requirements 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.

OTE

1 Covered by U.S. Patents #5,649,122, #5,949,787

FEATURES

APPLICATIONS

•

Network Management

•

Factory Automation and Process Control

•

Ethernet Network to Serial Ports

•

Point-of-Sale Systems

•

Multi serial ports RS-232/RS-422/RS-485 Cards

•

High Performance DUART

•

PCI Bus 2.2 Target Interface Compliance

•

3.3 V PCI Bus Compliant up to 33 MHz Clock

•

5 Volt Tolerant Serial Inputs

•

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

•

Programmable TX and RX FIFO Trigger Level

•

Automatic RTS/CTS or DTR/DSR Flow Control

•

Automatic Xon/Xoff Software Flow Control

•

Automatic RS485 Half-duplex Control Output

Selectable Turn-around Delay (0 to 15 bit-times)

with

•

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 XR17C152

XR17D152 (14x14x1.0 mm TQFP)

•

Infrared (IrDA 1.0) Data Encoder/Decoder

•

Programmable Data Rate with Prescaler

•

Up to 3.125 Mbps Data Rate at 8X Sampling

and

IGURE

1. B

LOCK

IAGRAM

*5V Tolerance for non-PCI Inputs

CLK

RST#

AD[31:0]

C/BE[3:0]#

FRAME#

IRDY#

TRDY#

DEVSEL#

STOP#

INTA#

IDSEL

PERR#

SERR#

PAR

UART Channel 0

64 Byte TX F IFO

UA RT

Regs

TX & R X

EN DEC

3.3V VCC

GND

TX0, RX0, DTR0#,

DSR0#, RTS0#,

CTS0#, CD0#, RI0#

PCI Local

Bus

Interface

Device

Configuration

Registers

BR G

64 Byte RX FIFO

UART Channel 1

UA RT

Regs

64 Byte TX F IFO

TX & R X

BR G

EN DEC

TX1, RX1, DTR1#,

DSR1#, RTS1#,

CTS1#, CD1#, RI1#

64 Byte RX FIFO

Configuration

Space

Registers

EECK

EEDI

EEDO

EECS

ENIR

EN485#

EEPROM

Interface

16-bit

Timer/Counter

Multi-purpose

Inputs/Outputs

Crystal Osc/Buffer

MPIO0- MPIO7

XTAL1

XTAL2

TMRCK

Exar

Corporation 48720 Kato Road, Fremont CA, 94538

•

(510) 668-7000

•

FAX (510) 668-7017

•

www.exar.com

XR17L152CM Related Products

	XR17L152CM	XR17L152	XR17L152IM
Description	3.3V PCI BUS DUAL UART	3.3V PCI BUS DUAL UART	3.3V PCI BUS DUAL UART

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