Multi-Tech Systems ISI551PC User Manual

Multi

Tech

Systems



Intelligent Serial Interface (ISI)

Model ISI551PC Card

Owner's Manual

82031702

NOTE: This equipment has been tested and found to comply

with the limits for a Class B digital device, pursuant to Part 15 of

the FCC Rules. These limits are designed to provide reasonable

protection against harmful interference when the equipment is

operated in a residential installation. This equipment generates,

uses and can radiate radio frequency energy, and if not installed

and used in accordance with the instruction manual, may cause

harmful interference to radio communications. However, there is

no guarantee that interference will not occur in a particular

installation. If this equipment cause harmful interference to radio

or television reception, which can be determined by turning the

equipment off and on, the user is encouraged to try to correct the

interference by one or more of the following measures:

Reorient or relocate the receiving antenna.

Increase the separation between the equipment and receiver.

Connect the equipment into an outlet on a circuit different

from that of which the receiver is connected.

Consult the dealer or an experienced radio/TV technician for

help.

WARNING: Changes or modifications to this unit not expressly

approved by the party responsible for compliance could void the

users authority to operate this equipment.

This device complies with Part 15 of the FCC rules. Operation is

subject to the following conditions: (1) This device may not cause

harmful interference, and (2) this device must accept any

interference received, including interference that may cause

undesired operation.

Owner's Manual

P/N 82031702, Rev. C

ISI551PC

Multi-Tech Systems, Inc., makes no representation or warranties with respect to the contents hereof and specifically disclaims any implied warranties of merchantability or fitness for any particular purpose. Furthermore, Multi-Tech Systems, Inc., reserves the right to revise this publication and to make changes from time to time in the content hereof without obligation of Multi-Tech Systems, Inc., to notify any person or organization of such revisions or changes.

Record of Revision

C Manual revised with format and editorial (2/6/95) changes

TRADEMARKS

Multi-Tech, MultiExpress, MultiModem Multi-Tech Systems, Inc.

i386, i486: Intel Corporation PC-DOS: International Business Machines Corporation

and the Multi-Tech logo:

Multi-Tech Systems, Inc.

2205 Woodale Drive

Mounds View, Minnesota 55112 U.S.A.

(612) 785-3500 or (800) 328-9717

U. S. FAX 612-785-9874

Technical Support (800) 972-2439

BBS (612) 785-3702 or (800) 392-2432

Internet Address: http://www.multitech.com

TABLE OF CONTENTS

INTRODUCTION & DESCRIPTION

1.1 Introduction ........................................... 1-1

1.2 Product Description .............................. 1-2

1.3 How to Use This Manual ......................1-2

1.4 Technical Specifications ...................... 1-3

HARDWARE INSTALLATION

2.1 ISI Card Installation .............................. 2-1

2.2 Determining Current System Settings . 2-1

2.3 Hardware Installation Procedure ..........2-3

SERVICE, WARRANTY, AND TECHNICAL

3.1 Introduction ........................................... 3-1

3.2 Limited Warranty ..................................3-1

3.3 Tech Support ........................................3-2

3.3.1 Recording ISI551PC Information 3-3

3.3.2 Service ........................................3-4

3.4 About the Multi-Tech BBS .................... 3-5

3.4.1 How to Use the Multi-Tech BBS .3-6

3.5 About CompuServe/Internet ................3-7

Appendix A: I/O Address Switch Settings A-1

CHAPTER 1

CHAPTER 2

CHAPTER 3

SUPPORT

1.1 Introduction

The introduction of high speed, data compression modems, such as Multi-Tech's MultiModem Series, has shown that many PC serial ports are unable to keep up, essentially becoming a bottleneck for the entire system. The ISI551PC card provides processing power to reliably transmit data up to

115.2K bps. Using an ISI enables your system's processor to perform more efficiently. This is because the ISI handles all of the byte-by-byte interrupts generated by the asynchronous terminals and stores the data in buffers. The ISI then generates one interrupt for an entire block of information and transfers the block to the system's microprocessor.

This manual provides the hardware installation procedures for the ISI551PC card. The ISI551PC card is used with Multi-Tech's high speed modems; and is a high speed, buffered, single-port serial card, with its own on board processor. The operation of the card provides the basis for its name ISI (Intelligent Serial Interface), 551 indicating the processing power of a 16550A UART and one port support, and PC indicating that it is an ISA bus card (8 bit), which is able to operate in any 286, 386, 486 or Pentium ISA or EISA compatible bus personal computer. The ISI551PC card can be accessed by any software written to the 16550A specification.

II TM

1-1

This manual contains product specifications, installation instructions, configuration and technical support information which will assist you in the operation process. It is assumed that you have basic PC skills at the very least. Therefore, we have not included step-by-step instructions for basic operations such as logging in and file editing, etc.

1.2 Product Description

The ISI551PC card is a single port serial expansion card which adds data buffering for enhanced serial port performance. The ISI551PC features a 9-pin connector (one DB-9), and is a "half-size" expansion card that supports a high-speed interface (up to

115.2K bps via 32K bytes of RAM). The ISI551PC features a bank of 8 DIP-Switches for I/O address selection and one jumper block for IRQ level selection.

1.3 How to Use This Manual

This chapter begins with a short introduction, product description, followed by a guide (which you are now reading) to the use of this manual, as well as the ISI551PCs technical specifications.

1-2

This manual includes hardware configuration and installation procedures described in Chapter 2. Chapter 3 covers technical support, warranty and BBS information. Appendix A describes complete

information on Base I/O addressing.

1.4 Technical Specifications

Computer Requirements

· 286-, 386- or 486- based PC or compatible

Operating Temperature

· 0° to 50°C (32° to 120°F)

Serial Interface

· RS232C, RS232D

Bus Type

· IBM PC standard (ISA bus) or EISA

Power Consumption

· 750 mAmps @ +5 VDC

· 100 mAmps @ +12 VDC

· 100 mAmps @ -12 VDC

1-3

Card Dimensions

ISI551PC

· 4.95" L x 2.375" W x .062" D

· 12.5 cm L x 6.0 cm W x .16 cm D

Baud Rates

· Up to 115.2K bps

Connector Types

· One DB-9 on ISI551PC

I/O Address

· Set by hardware DIP-Switch, valid range 100H to

3F8H (See Appendix A)

Interrupt Request

· Set by hardware Jumper, valid IRQs -- 2, 3, 4, 5,

7, 10, 11, 12, & 15

1-4

2.1 ISI Card Installation

This chapter provides you with the procedures to install the Multi-Tech ISI551PC card in your ISA or EISA bus personal computer.

Hardware installation involves:

1) Opening your PC.

2) Setting card configuration (determining I/O address DIP-Switch setting and IRQ jumper setting).

3) Installing the card into the PC.

2.2 Determining Current System Settings

When you install a serial device into your computer, the processor must have a means of routing information to and from the device and the device must have a means of gaining the processor's attention. These are called Input/Output (I/O) addresses and Interrupt Requests (IRQs), respectively. The ISI551PC card requires eight I/O addresses and one IRQ value which are not used by any other device in your system. When selecting a unique base I/O address, be sure that the other addresses are also unused. (For example, if you

2-1

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