8
Am79C983A
P R E L I M I N A R Y
TABLE OF CONTENTS
DISTINCTIVE CHARACTERISTICS.................................................................................................... 1
GENERAL DESCRIPTION................................................................................................................... 1
BLOCK DIAGRAM ............................................................................................................................... 3
RELATED AMD PRODUCTS............................................................................................................... 4
CONNECTION DIAGRAM....................................................................................................................5
LOGIC SYMBOL...................................................................................................................................6
LOGIC DIAGRAM ................................................................................................................................ 6
ORDERING INFORMATION.................................................................................................................7
Standard Products.......................................................................................................................... 7
PIN DESIGNATIONS..........................................................................................................................12
PIN DESCRIPTION............................................................................................................................ 13
Pseudo AUI Pins........................................................................................................................... 13
RAUI Port Pins.............................................................................................................................. 13
AUI Pins........................................................................................................................................ 13
Expansion Bus Pins...................................................................................................................... 13
Packet Report Port........................................................................................................................ 14
Microprocessor Interface .............................................................................................................. 15
LED Interface................................................................................................................................ 15
Miscellaneous Pins....................................................................................................................... 15
Transceiver Device Interface........................................................................................................ 15
FUNCTIONAL DESCRIPTION............................................................................................................17
Overview....................................................................................................................................... 17
Basic Repeater Functions............................................................................................................. 17
Repeater Function ..................................................................................................................17
Signal Regeneration ...............................................................................................................17
Jabber Lockup Protection .......................................................................................................17
Collision Handling ...................................................................................................................17
Fragment Extension ...............................................................................................................17
Auto Partitioning/Reconnection ..............................................................................................17
Basic Management Functions....................................................................................................... 18
Repeater Management ...........................................................................................................18
RMON ....................................................................................................................................18
Packet Reports .......................................................................................................................18
Detailed Functions........................................................................................................................ 22
Reset ......................................................................................................................................22
Hardware Reset............................................................................................................... 22
Software Reset ................................................................................................................ 22
Expansion Bus .......................................................................................................................22
Synchronous Mode Operation......................................................................................... 23
Asynchronous Mode Operation ....................................................................................... 24
Packet Statistics .....................................................................................................................24
Packet Report Port........................................................................................................... 24
RAUI Port......................................................................................................................... 25
Error Packet Statistics ............................................................................................................26
Transceiver Interface.................................................................................................................... 26
PAUI Ports ..............................................................................................................................26
QuIET Device Control and Status Data Interface ...................................................................26
QuIET Device Control and Status Data Interface Operation ........................................... 26
Control and Status for Non-QuIET Transceivers............................................................. 27
Visual Status Monitoring (LED) Support....................................................................................... 27
Using AUI/RAUI for 10BASE-T Ports .....................................................................................28
Intrusion Protection....................................................................................................................... 28
Timer Values ..........................................................................................................................29