Digital Equipment 21140A User manual
DigitalSemiconductor21140A
10/100BASE–TXEvaluationBoard
User’sGuide
Order Number: EC–QN7QC–TE
Revision/Update Information: This preliminary document supersedes the
Digital Semiconductor 21140A
10/100BASE–TX Evaluation Board
User’s Guide (EC–QN7QB–TE).
Digital Equipment Corporation
Maynard, Massachusetts
July 1996
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
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or otherwise distribute such products based on, or that incorporate the sample Digital Alpha
microprocessor or peripheral products.
© Digital Equipment Corporation 1996. All rights reserved.
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All other trademarks and registered trademarks are the property of their respective owners.
FCC Statement for Class A Equipment
Warning! This is a Class A product. In a domestic environment this product may cause radio
interference in which case the user may be required to take adequate measures.
This equipment generates, uses, and may emit radio frequency energy. The equipment has been
type tested and found to comply with the limits for a Class A digital device pursuant to Part 15
of FCC rules, which are designed to provide reasonable protection against such radio frequency
interference.
Operation of this equipment in a residential area may cause interference in which case the user
at his own expense will be required to take whatever measures may be required to correct the
interference.
Additional information on the need to interconnect the device with shielded (data) cables or the
need for special devices, such as ferrite beads on cables, is required if such means of interference
suppression was used in the qualification test for the device. This information will vary from
device to device and needs to be obtained from the EMC group or product manager and is based
on restrictions detailed in the FCC grant. As a rule at least one restriction applies and needs to
be added to the above FCC statement.
Contents
Preface ..................................................... vii
1 Introduction
1.1 What is the EB140A–TX? . . . ........................... 1–1
1.2 EB140A–TX Features ................................. 1–2
1.3 EB140A–TX Description ............................... 1–3
1.3.1 Block Diagram . ................................... 1–4
1.4 LEDs and Connectors ................................. 1–5
1.5 General-Purpose Port .................................. 1–7
1.6 EB140A–TX Dimensions ............................... 1–9
2 System Requirements, Kit Contents, and Installation
2.1 System Requirements ................................. 2–1
2.2 Kit Contents ........................................ 2–2
2.2.1 Using the Documentation ........................... 2–3
2.2.2 Unpacking the Hardware Design Package ............... 2–3
2.3 Installation Procedure ................................. 2–4
A Technical Support and Ordering Information
A.1 Obtaining Technical Support . ........................... A–1
A.2 Ordering Digital Semiconductor Products .................. A–1
A.3 Ordering Digital Semiconductor Literature ................. A–2
A.4 Ordering Third-Party Literature ......................... A–2
A.5 Obtaining Drivers and Software Updates .................. A–2
v
Figures
1–1 Main Components of the EB140A–TX . . ................ 1–3
1–2 EB140A–TX Block Diagram . . ........................ 1–4
1–3 EB140A–TX LEDs and Connectors .................... 1–5
1–4 General-Purpose Port Bit Mapping .................... 1–7
Tables
1–1 EB140A–TX LED and Connector Descriptions ............ 1–6
1–2 General-Purpose Port Bit Descriptions . ................ 1–8
2–1 Guidelines for Using Documentation . . . ................ 2–3
2–2 Hardware Design Package Files ...................... 2–3
vi
Preface
This document describes the Digital Semiconductor 21140A 10/100BASE–TX
Evaluation Board (also referred to as the EB140A–TX), which is a sample
design and development board for systems based on the Digital Semiconductor
21140A PCI Fast Ethernet LAN Controller (21140A). The EB140A–TX supports
10BASE–T and 100BASE–TX Fast Ethernet, and complies with the electrical
and protocol requirements of the PCI Local Bus Specification, Revision 2.0 and
PCI Local Bus Specification, Revision 2.1.
Audience
This document is intended for developers who are evaluating the functionality
of the 21140A, and who use the EB140A–TX to design systems based on
the 21140A.
Content Overview
This manual contains the following chapters and appendix:
•Chapter 1, Introduction — Describes the EB140A–TX.
•Chapter 2, System Requirements, Kit Contents, and Installation —
Lists the requirements for installing the EB140A–TX and lists the contents
of the Digital Semiconductor 21140A 10/100BASE–TX Evaluation Board
Kit. It also provides the procedure for installing the evaluation board.
•Appendix A, Technical Support and Ordering Information —
Contains information about how to obtain technical support and order
Digital Semiconductor products.
vii
1
Introduction
This chapter describes the main components of the EB140A–TX. The chapter
describes how to interpret the LEDs and connectors on the EB140A–TX, and it
describes the bit mapping of the general-purpose port.
1.1 What is the EB140A–TX?
The EB140A–TX is a 10BASE–T and 100BASE–TX PCI bus master adapter
board that demonstrates the functionality of the 21140A. With the EB140A–TX
installed in a personal computer (PC), you can evaluate the hardware, PCI
protocols, Ethernet controller, and autonegotiation protocols, and develop
drivers for an Ethernet node.
For more information about the 21140A, refer to the Digital Semiconductor
21140A PCI Fast Ethernet LAN Controller Data Sheet.
Preliminary—Subject to Change—July 1996 1–1
1.2 EB140A–TX Features
The EB140A–TX is a universal, PCI form-factor option card that has the
following features:
• Direct interface to PCI bus
• Full PCI compliance (revisions 2.0 and 2.1)
• PCI bus master operation
• Direct 10BASE–T and 100BASE–TX network connection
• Onboard, unique Ethernet address MicroWire ROM
• Onboard boot ROM
• Full JTAG support
• Full autonegotiation support
• ‘‘Jumperless’’ board—fully software controlled (including network bit rate
selection)
• LEDs for indicating link status, transmit activity, and receive activity
• Support for 5-volt and 3.3-volt signaling environment systems
• Minimum chip count implementation
• Single 5-volt power supply
• Power-management support
1–2 Preliminary—Subject to Change—July 1996
Table of contents
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