xr17l152im Exar Corporation, xr17l152im Datasheet

xr17l152im

Manufacturer Part Number

xr17l152im

Description

3.3v Pci Bus Dual Uart

Manufacturer

Exar Corporation

Datasheet

1.XR17L152IM.pdf (55 pages)

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AUGUST 2003

GENERAL DESCRIPTION

The XR17L152

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.

APPLICATIONS

Exar

OTE

IGURE

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

Corporation 48720 Kato Road, Fremont CA, 94538

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

1. B

LOCK

CLK

RST#

AD[31:0]

C/BE[3:0]#

FRAME#

IRDY#

TRDY#

DEVSEL#

STOP#

INTA#

IDSEL

PERR#

SERR#

PAR

EECK

EEDI

EEDO

EECS

ENIR

EN485#

(L152) is a monolithic dual PCI Bus

IAGRAM

Configuration

PCI Local

EEPROM

Registers

Interface

Space

Bus

Timer/Counter

DISCONTINUED

Configuration

16-bit

Registers

Device

•

(510) 668-7000

*5V Tolerance for non-PCI Inputs

FEATURES

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:

Eight Multi-Purpose Inputs/outputs

A General Purpose 16-bit Timer/Counter

Sleep Mode with Automatic Wake-up Indicator

Same

XR17D152 (14x14x1.0 mm TQFP)

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 with

Infrared (IrDA 1.0) Data Encoder/Decoder

Programmable Data Rate with Prescaler

Up to 3.125 Mbps Data Rate at 8X Sampling

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

UA RT

Regs

BR G

Regs

BR G

UART Channel 0

UART Channel 1

Crystal Osc/Buffer

Inputs/Outputs

Multi-purpose

package

TX & R X

64 Byte RX FIFO

64 Byte TX F IFO

64 Byte RX FIFO

64 Byte TX F IFO

•

FAX (510) 668-7017

EN DEC

3.3V PCI BUS DUAL UART

and

XTAL1

XTAL2

TMRCK

TX0, RX0, DTR0#,

DSR0#, RTS0#,

CTS0#, CD0#, RI0#

DSR1#, RTS1#,

CTS1#, CD1#, RI1#

MPIO0- MPIO7

TX1, RX1, DTR1#,

pin-out

XR17L152

GND

3.3V VCC

•

www.exar.com

XR17C152

REV. 1.1.0

and

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