LAN91C96 Ver la hoja de datos (PDF) - SMSC -> Microchip
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LAN91C96 Datasheet PDF : 125 Pages
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Non-PCI Single-Chip Full Duplex Ethernet Controller with Magic Packet
TABLE OF CONTENTS
Chapter 1 General Description _________________________________________________________________________ 6
Chapter 2 Overview __________________________________________________________________________________ 7
Chapter 3 Pin Configurations_________________________________________________________________________ 10
3.1 Local Bus vs. PCMCIA vs. 68000 Pin Requirements ________________________________________________ 14
Chapter 4 Description of Pin Functions ________________________________________________________________ 16
4.1 Buffer Symbols _______________________________________________________________________________ 20
Chapter 5 Functional Description _____________________________________________________________________ 22
5.1 Buffer Memory _______________________________________________________________________________ 23
5.2 Interrupt Structure____________________________________________________________________________ 30
5.3 Reset Logic___________________________________________________________________________________ 31
5.4 Power Down Logic States_______________________________________________________________________ 31
5.5 LAN91C96 Power Down States __________________________________________________________________ 32
5.6 PCMCIA CONFIGURATION REGISTERS DESCRIPTION ________________________________________ 35
Chapter 6 Frame Format in Buffer Memory for Ethernet __________________________________________________ 37
Chapter 7 Registers Map in I/O Space __________________________________________________________________ 41
7.1 I/O Space Access ______________________________________________________________________________ 41
7.2 I/O Space Registers Description _________________________________________________________________ 41
Chapter 8 Theory of Operation________________________________________________________________________ 65
8.1 Typical Flow of Events for Transmit (Auto Release = 0) _____________________________________________ 67
8.2 Typical Flow of Events for Transmit (Auto Release = 1) _____________________________________________ 68
8.3 Flow of Events for Receive ______________________________________________________________________ 69
Chapter 9 Functional Description of the Blocks __________________________________________________________ 79
9.1 Memory Management Unit _____________________________________________________________________ 79
9.2 Arbiter ______________________________________________________________________________________ 79
9.3 Bus Interface _________________________________________________________________________________ 80
9.4 Wait State Policy ______________________________________________________________________________ 80
9.5 Arbitration Considerations _____________________________________________________________________ 81
9.6 DMA Block __________________________________________________________________________________ 81
9.7 Packet Number FIFOS _________________________________________________________________________ 82
9.8 CSMA Block _________________________________________________________________________________ 84
9.9 Network Interface _____________________________________________________________________________ 85
9.10 10Base-T___________________________________________________________________________________ 86
9.11 AUI _______________________________________________________________________________________ 86
9.12 Physical Interface ___________________________________________________________________________ 86
9.13 Transmit Functions__________________________________________________________________________ 86
9.13.1 Manchester Encoding _______________________________________________________________________ 86
9.13.2 Transmit Drivers ___________________________________________________________________________ 87
9.13.3 Jabber Function____________________________________________________________________________ 87
SMSC LAN91C965v&3v
Page 3
DATASHEET
Rev. 09/10/2004
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