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COM20020I3V-DZD Datasheet(PDF) 3 Page - SMSC Corporation

Part # COM20020I3V-DZD
Description  5Mbps ARCNET (ANSI 878.1) Controller with 2K x 8 On-Chip RAM
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Manufacturer  SMSC [SMSC Corporation]
Direct Link  http://www.smsc.com
Logo SMSC - SMSC Corporation

COM20020I3V-DZD Datasheet(HTML) 3 Page - SMSC Corporation

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5Mbps ARCNET (ANSI 878.1) Controller with 2K x 8 On-Chip RAM
SMSC COM20020I 3.3V Rev.E
Page 3
Revision 09-11-06
DATASHEET
TABLE OF CONTENTS
CHAPTER 1
GENERAL DESCRIPTION................................................................................................................5
CHAPTER 2
PIN CONFIGURATIONS ...................................................................................................................6
CHAPTER 3
DESCRIPTION OF PIN FUNCTIONS ...............................................................................................8
CHAPTER 4
PROTOCOL DESCRIPTION...........................................................................................................11
4.1
NETWORK PROTOCOL ...................................................................................................................................11
4.2
DATA RATES ................................................................................................................................................11
4.2.1
Selecting Clock Frequencies Above 2.5 Mbps .................................................................................... 11
4.3
NETWORK RECONFIGURATION........................................................................................................................12
4.4
BROADCAST MESSAGES ................................................................................................................................12
4.5
EXTENDED TIMEOUT FUNCTION ......................................................................................................................12
4.6
LINE PROTOCOL............................................................................................................................................13
CHAPTER 5
SYSTEM DESCRIPTION ................................................................................................................15
5.1
MICROCONTROLLER INTERFACE .....................................................................................................................15
5.2
TRANSMISSION MEDIA INTERFACE ..................................................................................................................19
CHAPTER 6
FUNCTIONAL DESCRIPTION........................................................................................................24
6.1
MICROSEQUENCER........................................................................................................................................24
6.2
INTERNAL REGISTERS ............................................................................................................................25
6.3
INTERNAL RAM..............................................................................................................................................35
6.4
COMMAND CHAINING .....................................................................................................................................40
6.5
INITIALIZATION SEQUENCE..............................................................................................................................42
6.6
IMPROVED DIAGNOSTICS................................................................................................................................42
CHAPTER 7
OPERATIONAL DESCRIPTION .....................................................................................................45
7.1
MAXIMUM GUARANTEED RATINGS* .................................................................................................................45
7.2
DC ELECTRICAL CHARACTERISTICS ................................................................................................................45
CHAPTER 8
TIMING DIAGRAMS .......................................................................................................................48
CHAPTER 9
PACKAGE OUTLINES ...................................................................................................................63
CHAPTER 10
APPENDIX A...................................................................................................................................65
CHAPTER 11
APPENDIX B...................................................................................................................................68
CHAPTER 12
APPENDIX C...................................................................................................................................69
12.1
SOFTWARE IDENTIFICATION OF THE COM20020I 3V REV D AND REV E ............................................................69


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