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April 1995

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Document:	DECchip21041 PCI Evaluation Board User’s Guide
Order Number:	EC-QD2LA-TE
Revision:
Pages:	20
Original Filename:	http://bitsavers.org/pdf/dec/semiconductor/ethernet/EC-QD2LA-TE_21041_PCI_Evaluation_Board_Users_Guide_199504.pdf

OCR Text

DECchip 21041 PCI
Evaluation Board
User’s Guide
Order Number: EC–QD2LA–TE
Revision/Update Information:

Digital Equipment Corporation
Maynard, Massachusetts

This is a preliminary manual.

April 1995
While Digital believes the information included in this publication is correct as of the date of
publication, it is subject to change without notice.
Digital Equipment Corporation grants to the purchaser of Alpha microprocessor or peripheral
sample designs a fully paid-up, non-exclusive, irrevocable, perpetual and worldwide license to
copy, use, reproduce or have developed products based on or that incorporate all, or a portion
of the sample designs and to manufacture, have manufactured, market, sell, lease, license
or otherwise distribute such products based on, or that incorporate the sample Digital Alpha
microprocessor or peripheral products.
© Digital Equipment Corporation 1995.
Printed in U.S.A.

DECchip, Digital, and the DIGITAL logo are trademarks of Digital Equipment Corporation.
Digital Semiconductor is a Digital Equipment Corporation business.
IEEE is a registered trademark of The Institute of Electrical and Electronics Engineers, Inc.
Microsoft and MS–DOS are registered trademarks and NDIS2 is a trademark of Microsoft
Corporation.
MICROWIRE is a registered trademark of BankAmerica Corporation.
NetWare and Novell are registered trademarks of Novell, Inc.
OS/2 is a registered trademark of International Business Machines Corporation.
PKZIP is a trademark of PKWARE, Inc.
PostScript is a registered trademark of Adobe Systems Incorporated.
SCO is a trademark of Santa Cruz Operations, Inc.
UNIX is a registered trademark in the United States and other countries licensed exclusively
through X/Open Company Ltd.
All other trademarks and registered trademarks are the property of their respective holders.

Contents
Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1 Introduction
1.1
1.2
1.2.1
1.2.2
1.2.3

DECchip 21041 PCI Ethernet LAN Controller . . . . . . . . . . . . . . .
DECchip 21041 PCI Evaluation Board . . . . . . . . . . . . . . . . . . . . .
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LEDs and Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1–1
1–1
1–2
1–3
1–6

2 System Requirements, Kit Contents, and Installation
2.1
2.2
2.2.1
2.2.2
2.3
2.4

System Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Kit Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using the Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . .
Unpacking the Hardware Design Package . . . . . . . . . . . . . . .
Installation Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Drivers and Updates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–1
2–1
2–3
2–3
2–4
2–5

A Technical Support, Ordering, and Associated Literature
A.1
A.2
A.3
A.4

Digital Semiconductor Information Line . . . . . . . . . . . . . . . . . . .
Ordering Digital Semiconductor Products . . . . . . . . . . . . . . . . . .
Ordering Associated Literature . . . . . . . . . . . . . . . . . . . . . . . . . .
Ordering Third-Party Literature . . . . . . . . . . . . . . . . . . . . . . . . .

A–1
A–1
A–2
A–2

iii

Figures
1–1
1–2
1–3

EB41 Back Panel LEDs and Connectors . . . . . . . . . . . . . . . .
EB41 Diagnostic LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
EB41 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1–3
1–4
1–6

LED Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Guidelines for Using Documentation . . . . . . . . . . . . . . . . . . .
Hardware Design Package Files . . . . . . . . . . . . . . . . . . . . . .

1–5
2–3
2–3

Tables
1–1
2–1
2–2

Preface
This document describes the DECchip 21041 PCI Evaluation Board, which is a
sample design and development board for systems based on the DECchip 21041
PCI Ethernet LAN Controller. The DECchip 21041 PCI Evaluation Board
(also referred to as the EB41) complies with the PCI Local Bus Specification,
Revision 2.0.

Audience
This document is intended for developers who are evaluating the functionality
of the DECchip 21041 PCI Ethernet LAN Controller, and who use the EB41 to
design systems based on the DECchip 21041 PCI Ethernet LAN Controller.

Content Overview
This manual contains the following chapters and an appendix:
•

Chapter 1, Introduction — Describes the DECchip 21041 PCI Ethernet
LAN Controller and the EB41.

•

Chapter 2, System Requirements, Kit Contents, and Installation —
Lists the requirements for installing the EB41 and loading its drivers. It
also provides the contents of the DECchip 21041 PCI Evaluation Board Kit
and the procedure for installing the EB41.

•

Appendix A, Technical Support, Ordering, and Associated
Literature — Provides information about ordering Digital’s microprocessor
and peripheral chips, and associated literature. It also explains how to
obtain technical support and information.

1
Introduction
This chapter describes the DECchip 21041 PCI Ethernet LAN Controller and
the DECchip 21041 PCI Evaluation Board (EB41). It also describes the LEDs
and main parts of the EB41.

1.1 DECchip 21041 PCI Ethernet LAN Controller
The DECchip 21041 PCI Ethernet LAN Controller (21041) is a single-chip
master, direct memory access (DMA) Ethernet LAN controller with a direct
interface to the peripheral component interconnect (PCI) local bus. It supports
full-duplex operation, and its unique design is optimized to reduce host bus
utilization. The 21041 is compliant with the PCI Local Bus Specification,
Revision 2.0.
The 21041 supports 10BASE5, 10BASE-T, and 10BASE2 network connections.
It provides a direct interface to a 64KB to 256KB boot ROM. The 21041
supports both PCI 3.3-volt and 5.0-volt signaling environments and a
power-down mode for energy conservation.
For more information about the 21041, refer to the DECchip 21041 PCI
Ethernet LAN Controller Data Sheet.

1.2 DECchip 21041 PCI Evaluation Board
The DECchip 21041 PCI Evaluation Board (EB41) is a PCI bus master board
that demonstrates the functionality of the DECchip 21041 PCI Ethernet LAN
Controller. With the EB41 installed in a PC, you can do the following:
•

Evaluate hardware and develop software to create an Ethernet node.

•

Evaluate the features of the 21041, the PCI protocol, and the
autonegotiation algorithm.

•

Debug drivers.

The EB41 supports PCI bus master operation with programmed burst length
and uses INTA as its primary interrupt line. An onboard 20-megahertz crystal
oscillator circuit is used to generate the network (serial) clock.
Preliminary—April 1995 1–1

The EB41 can be used in systems with 5-volt or 3.3-volt signaling
environments. An onboard, 5-volt single power supply voltage regulator
supplies 3.3-volts to the 21041 to enable connection to systems without a
3.3-volt power supply.
The EB41 supports a boot ROM (flash) of 64KB to 256KB. A standard
MICROWIRE ROM is used to support a unique Ethernet address ROM.

1.2.1 Features
The EB41 has the following features:
•

Direct PCI interface

•

PCI revision 2.0 compliance

•

PCI bus master operation

•

Direct 10BASE-T, 10BASE5, and 10BASE2 network connections

•

Onboard unique Ethernet address MICROWIRE ROM

•

Onboard boot ROM

•

Full JTAG support

•

Autodetection of half- and full-duplex network environments

•

Jumperless board—fully software-controlled including port selection

•

Transmit and receive LEDs and optional LED indication for link pass,
collision, receive address match, polarity, and transmit jabber

•

Single 5-volt power supply

•

Supports both PCI 5.0-volt and 3.3-volt signaling environments

•

Online network port autosensing

•

Onboard 3.3-volt voltage regulator to support 5.0-volt systems

•

Minimum chip count application

•

Power management

1–2 Preliminary—April 1995

1.2.2 LEDs and Connectors
Each EB41 has a transmit LED and a receive LED. These LEDs are mounted
on the back panel.
The EB41 also supports five, optional diagnostic LEDs. These include
Collision, Receive Address Match, Polarity, Transmit Jabber, and LinkPass.
The diagnostic LEDs are located on the EB41 board, above the TP (RJ45)
connector.
Figures 1–1 and 1–2 show the LEDs, and Table 1–1 describes the LEDs.
Figure 1–1 EB41 Back Panel LEDs and Connectors
TX

RX
Transmit (TX) and
Receive (RX) LEDs

TP Connector (RJ45)

AUI Connector

BNC Connector (Coaxial)

LJ-04291.AI

Preliminary—April 1995 1–3

Figure 1–2 EB41 Diagnostic LEDs

RX_MA TX_JAB

COL

POL

LINK

RJ45

LJ-04380.AI5

1–4 Preliminary—April 1995

Table 1–1 LED Descriptions
LED

Description

Transmit. This yellow LED is on when a transmission is in progress.

Receive. This green LED is on when a receive is in progress.

COL

Collision. This optional LED is on when a collision is detected on
the network.

RX_MA

Receive Address Match. This optional LED is on when a received
packet is identified by the 21041 as a packet directed to the
particular station.

POL

Polarity. This optional LED is on when the 21041 automatically
reverses polarity on the twisted-pair lines.

TX_JAB

Transmit Jabber. This optional LED is on when the 21041 is in
transmit jabber mode. For detailed information about transmit
jabber mode, refer to the DECchip 21041 PCI Ethernet LAN
Controller Hardware Reference Manual.

LINK

LinkPass. This optional LED is on when link is established.

Preliminary—April 1995 1–5

1.2.3 Block Diagram
The EB41 requires a minimum chip implementation to support PCI bus
connections and the three Ethernet media (TP, AUI, and BNC). For AUI
(10BASE5) and TP (10BASE-T) network connections, only a magnetics
component is required for direct connection to the network. BNC (10BASE2)
network connection requires a magnetics component and a BNC transceiver.
Figure 1–3 shows the mains parts of the EB41.
Figure 1–3 EB41 Block Diagram

AUI
DECchip
21041
PCI
Ethernet
LAN
Controller

Port

AUI Network
Connection

AUI
Magnetics

BNC
Magnetics

BNC
Transceiver

BNC Network
Connection

PCI
Bus

TP
Port

Boot
Port

Ethernet
Port

TP
Magnetics

TP Network
Connection

Boot
ROM

Ethernet
Address
ROM
LJ-04292.AI

1–6 Preliminary—April 1995

2
System Requirements, Kit Contents, and
Installation
This chapter provides the system requirements for using the EB41, lists the
contents of the DECchip 21041 PCI Evaluation Board Kit, and describes how
to install the EB41. It also provides information about how to obtain additional
drivers and updates.

2.1 System Requirements
To use the EB41, you need the following:
•

A PCI-based PC system that supports master mode operation

•

A PCI master mode expansion slot

•

A system that is compliant with the PCI Local Bus Specification,
Revision 2.0

•

A 5-volt power supply to the expansion slot (low-power, 7.5 W maximum)

•

A 3½-inch diskette drive

2.2 Kit Contents
The DECchip 21041 PCI Evaluation Board Kit contains the following
materials:
•

DECchip 21041 PCI Evaluation Board (EB41)

•

A hardware design package diskette that contains the following
information. Section 2.2.2 describes how to extract the files.
Board schematics (MD and UA)
Unit assembly and mechanical drawings
Gerber files
Vendor parts list

Preliminary—April 1995 2–1

•

A driver diskette that contains the following executables:
Novell NetWare (client/server)
NDIS2 (DOS, OS/2)
NDIS3 (Windows NT, Windows for WorkGroups, and Windows 95)
The README.TXT file in the top-level directory describes the structure of
this diskette.

•

A utility diskette that contains the following utilities:
A program called PCITEST to verify compliance with the PCI Local
Bus Specification, Revision 2.0 and the PCI BIOS Specification,
Revision 2.0.
A diagnostic program called EVBDEBUG to perform low-level
debugging of the DECchip 21041 PCI Evaluation Board.
An SROM utility to modify the serial ROMs on 21140 and 21041 based
network cards.
The README.TXT file in the top-level directory describes the structure of
this diskette.

•

The following documents:
DECchip 21041 PCI Ethernet LAN Controller Product Brief
DECchip 21041 PCI Ethernet LAN Controller Data Sheet
DECchip 21041 PCI Ethernet LAN Controller Hardware Reference
Manual
Connecting the DECchip 21041 PCI Ethernet LAN Controller to the
Network: An Application Note
Using the DECchip 21041 with Boot ROM, Serial ROM, and External
Register: An Application Note
Digital Semiconductor PCI Ethernet Driver Information Sheet
EB41 Schematics
EB41 Vendor Parts List
Warranty statement/registration card

2–2 Preliminary—April 1995

2.2.1 Using the Documentation
Table 2–1 provides guidelines for using the documentation and software to
accomplish specific tasks.
Table 2–1 Guidelines for Using Documentation
If you want to ...

Start with the ...

Install the DECchip 21041 PCI
Evaluation Board

DECchip 21041 PCI Evaluation Board User’s Guide

Install a driver

README.TXT file on the diskette that contains the
driver

Design new hardware

DECchip 21041 PCI Ethernet LAN Controller Data
Sheet
DECchip 21041 PCI Ethernet LAN Controller
Hardware Reference Manual
Connecting the DECchip 21041 PCI Ethernet LAN
Controller to the Network: An Application Note

Obtain driver sources

Digital Semiconductor PCI Ethernet Driver
Information Sheet

2.2.2 Unpacking the Hardware Design Package
Table 2–2 lists the files that are on the hardware design package diskette. The
files with an .EXE extension have been compressed using PKZIP, Version 2.04g
and converted to self-extracting archives using ZIP2EXE.
Table 2–2 Hardware Design Package Files
File Name

Contents

Comments

README.TXT

Provides a general description of the
diskette contents.

You do not have to extract
this file.

GERBER.EXE

Contains the gerber files.

To extract this file, enter
GERBER at the system
prompt.

EB41VPL.TXT

Contains a vendor parts list.

You do not have to extract
this file.

SCHEM.EXE

Contains the schematics, mechanical drawings, and unit assembly
drawings.

This file is scaled to print
on 8½ x 11 paper. To
extract this file, enter
SCHEM at the system
prompt.

Preliminary—April 1995 2–3

2.3 Installation Procedure
To install the EB41 and load the drivers, do the following:
1. From the diskette that contains the driver you are loading, read
the README.TXT file located in the top-level directory. It provides
information about how to configure the EB41.
2. Turn off the power to the PC and remove its cover.
3. Insert the card edge of the EB41 into an available master PCI option slot
in the PC.
4. Connect the communications media (10BASE-T, 10BASE5, or 10BASE2).
Multi-connection is allowed. The EB41 autosensing feature will select the
active port.
5. Replace the PC box cover.
6. Remove any diskettes from the PC disk drive.
7. Turn on the PC.
8. Load the driver for your operating system. Each driver is stored in its own
subdirectory on the shipped driver diskette. Refer to the README.TXT
and RELEASE.TXT files in the subdirectory for the particular driver for
installation and release information.

2–4 Preliminary—April 1995

2.4 Drivers and Updates
Additional drivers and updates are available on a regular basis. To register
your evaluation board and be notified of these updates, complete the customer
reply card included in the kit, or send the following information to the address
listed below:
Name
Address
Telephone number
FAX number
Product purchased
Serial no.
Date purchased
Mail the information to:
Digital Equipment Corporation
Attn: Marketing/Product Updates
77 Reed Road, HLO2-2/M9
Hudson, MA 01749
USA

Preliminary—April 1995 2–5

A
Technical Support, Ordering, and
Associated Literature
This appendix provides information about ordering Digital’s microprocessor
and peripheral chips, and associated literature. It also explains how to obtain
technical support and information.

A.1 Digital Semiconductor Information Line
If you need technical support or help deciding which literature best meets your
needs, call the Digital Semiconductor Information Line:
United States and Canada
TTY (United States only)
Outside North America

1–800–332–2717
1–800–332–2515
+1–508–568–6868

A.2 Ordering Digital Semiconductor Products
To order the following Digital Semiconductor products, contact your local
distributor.
Product

Order Number

DECchip 21041 PCI Ethernet LAN Controller

21041–AA

DECchip 21041 PCI Evaluation Board Kit

21A41–01

DECchip 21140 PCI Evaluation Board Kit

21A40–03

Preliminary—April 1995 A–1

A.3 Ordering Associated Literature
The following table lists DECchip 21041 literature that is available. For
ordering information, contact the Digital Semiconductor Information Line.
Title

Order Number

DECchip 21041 PCI Ethernet LAN Controller
Product Brief

EC–QAWVA–TE

DECchip 21041 PCI Ethernet LAN Controller
Data Sheet

EC–QAWWA–TE

DECchip 21041 PCI Ethernet LAN Controller
Hardware Reference Manual

EC–QAWXA–TE

Connecting the DECchip 21041 PCI Ethernet
LAN Controller to the Network: An Application
Note

EC–QJBWA–TE

Using the DECchip 21041 with Boot ROM, Serial
ROM, and External Register: An Application
Note

EC–QJLGA–TE

A.4 Ordering Third-Party Literature
You can order the following third-party literature directly from the vendor.
Title

Vendor

PCI Local Bus Specification, Revision 2.0
PCI BIOS Specification, Revision 2.0

PCI Special Interest Group
M/S HF3–15A
5200 N.E. Elam Young Pkwy
Hillsboro, Oregon 97124–6497
(503) 696–2000

Institute of Electrical and Electronics
Engineers (IEEE) 802.3

IEEE Service Center
445 Hoes Lane
P.O. Box 1331
Piscataway, NJ 08855–1331
1–800–678–IEEE (U.S. and Canada)
908–562–3805 (Outside U.S. and Canada)

A–2 Preliminary—April 1995