XR17D152 Exar Corporation, XR17D152 Datasheet

XR17D152

Manufacturer Part Number

XR17D152

Description

Two-channel Pci-bus Uart

Manufacturer

Exar Corporation

Datasheet

1.XR17D152.pdf (61 pages)

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FEBRUARY 2003

GENERAL DESCRIPTION

The XR17D152

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 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,

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

Universal PCI Bus Add-in Card

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, #5,832,205

1. B

LOCK

automatic

Power Supply)

CLK (33 MHz)

3.3V or 5V

(PCI VI/O

RST#

AD[31:0]

C/BE[3:0]#

FRAME#

IRDY#

TRDY#

DEVSEL#

STOP#

INTA#

IDSEL

PERR#

SERR#

PAR

EECK

EEDI

EEDO

EECS

ENIR

EN485#

(D152) is a monolithic dual PCI Bus

IAGRAM

software

Configuration

PCI Local

EEPROM

Registers

Interface

Space

Bus

(Xon/Xoff)

Timer/Counter

PRELIMINARY

Configuration

16-bit

Registers

Device

UNIVERSAL (3.3V AND 5V) PCI BUS DUAL UART

flow

•

(510) 668-7000

FEATURES

High Performance DUART

Universal PCI Bus Buffers - 3.3V and 5V Operation

32-bit PCI Bus 2.2 Target Interface Compliance

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

Same package and pin-out as XR17C152 and XR17L152

(14x14x1.0 mm TQFP)

UA RT

Regs

BR G

Regs

BR G

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 HDX Control Output with

Selectable Turn-around Delay

Infrared (IrDA 1.0) Data Encoder/Decoder

Programmable Data Rate with Prescaler

Up to 6.25 Mbps Data Rate at 8X Sampling

UART Channel 0

UART Channel 1

Crystal Osc/Buffer

Inputs/Outputs

Multi-purpose

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

XTAL1

XTAL2

TMRCK

TX0, RX0, DTR0#,

DSR0#, RTS0#,

CTS0#, CD0#, RI0#

DSR1#, RTS1#,

CTS1#, CD1#, RI1#

MPIO0- MPIO7

TX1, RX1, DTR1#,

XR17D152

(Core Logic)

GND

5V VCC

•

www.exar.com

REV. P1.0.0

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