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Datasheet
Document #: 248987
Revision#: 003
Rev Date: 08/07/01
7
Advanced 10/100 Repeater with Integrated Management
—
LXT9860/9880
Tables
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10
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46
47
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49
Signal Types........................................................................................................13
LXT98x0 Pins, Numeric Order ............................................................................13
MII #1 Signal Descriptions...................................................................................20
MII #2 Signal Descriptions...................................................................................21
Inter-Repeater Backplane Signal Descriptions....................................................22
Twisted-Pair Port Signal Descriptions.................................................................25
Serial Management Interface Signal Descriptions ..............................................26
LED Signal Descriptions......................................................................................27
Power Supply and Indication Signal Descriptions...............................................28
PROM Interface Signal Descriptions...................................................................29
Miscellaneous Signal Descriptions......................................................................30
Serial LED Port Bit Stream..................................................................................41
ACTGLED Display Modes...................................................................................42
LED Terms..........................................................................................................43
LED Mode 1 Indications......................................................................................44
LED Mode 2 Indications......................................................................................45
LED Mode 3 Indications......................................................................................46
LED Mode 4 Indications......................................................................................47
Cascading and Stacking Connections.................................................................50
IRB Signal Details ...............................................................................................51
SMI Message Fields............................................................................................55
SMI Header Storage............................................................................................55
SMI Command Set..............................................................................................56
Typical Serial Management Packets...................................................................57
LXT98x0 Magnetics Specifications .....................................................................66
Oscillator Manufacturers .....................................................................................67
Absolute Maximum Ratings.................................................................................75
Operating Conditions...........................................................................................75
Input System Clock1 Requirements....................................................................75
I/O Electrical Characteristics...............................................................................76
100 Mbps IRB Electrical Characteristics.............................................................76
10 Mbps IRB Electrical Characteristics...............................................................77
100BASE-TX Transceiver Electrical Characteristics...........................................78
10BASE-T Transceiver Electrical Characteristics...............................................78
100 Mbps TP Port-to-Port Delay Timing Parameters..........................................79
100BASE-TX MII-to-TP Port Timing Parameters................................................80
100BASE-TX TP-to-MII Timing Parameters........................................................81
10BASE-T MII-to-TP Timing Parameters............................................................82
10BASE-T TP-to-MII Timing Parameters............................................................83
100 Mbps TP-to-IRB Timing Parameters
1................................................................................84
10 Mbps TP-to-IRB Timing Parameters
1...................................................................................85
10 Mbps IRB-to-TP Port Timing Parameters.......................................................86
Serial Management Interface Timing Characteristics..........................................86
PROM Interface Timing Characteristics..............................................................87
Register Map.......................................................................................................88
Port Counter Registers........................................................................................95
RMON Counter Registers - 10 Mbps ..................................................................97
RMON Counter Registers - 100 Mbps ................................................................98
Ethernet Address Register Bit Assignments .......................................................99