LAN91C95 datasheet(2/144 Pages) SMSC

2 / 144 page

TABLE OF CONTENTS

FEATURES ........................................................................................................................................1

PIN CONFIGURATION.......................................................................................................................3

GENERAL DESCRIPTION .................................................................................................................4

OVERVIEW ........................................................................................................................................4

PIN REQUIREMENTS ........................................................................................................................7

DESCRIPTION OF PIN FUNCTIONS .................................................................................................9

BUFFER TYPES ..............................................................................................................................16

FUNCTIONAL DESCRIPTION..........................................................................................................20

MODEM INTERFACE ......................................................................................................................23

BUFFER MEMORY ..........................................................................................................................24

INTERRUPT STRUCTURE ...............................................................................................................32

RESET LOGIC .................................................................................................................................33

POWERDOWN LOGIC.....................................................................................................................34

INTERNAL VS EXTERNAL ATTRIBUTE MEMORY MAP ................................................................40

PCMCIA CONFIGURATION REGISTERS: ADDRESS 8000-803EH................................................41

PCMCIA CONFIGURATION REGISTERS DESCRIPTION ...............................................................42

INTERNAL I/O SPACE MAP ............................................................................................................52

I/O REGISTERS DESCRIPTION ......................................................................................................53

THEORY OF OPERATION ...............................................................................................................83

MAGIC PACKET SUPPORT ............................................................................................................84

INTERNAL VS. EXTERNAL ATTRIBUTE MEMORY MAP ...............................................................93

FUNCTIONAL DESCRIPTION OF THE BLOCKS.............................................................................97

BOARD SETUP INFORMATION ....................................................................................................106

OPERATIONAL DESCRIPTION .....................................................................................................111

TIMING DIAGRAMS ......................................................................................................................115

LAN91C95 Datasheet(PDF) 2 Page - SMSC Corporation