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AM79C984A Datasheet(PDF) 6 Page - Advanced Micro Devices

Part # AM79C984A
Description  enhanced Integrated Multiport Repeater (eIMR??
Download  44 Pages
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Manufacturer  AMD [Advanced Micro Devices]
Direct Link  http://www.amd.com
Logo AMD - Advanced Micro Devices

AM79C984A Datasheet(HTML) 6 Page - Advanced Micro Devices

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P R E L I M I N A R Y
6
Am79C984A
Enable Link Pulse (Per TP Port). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-52
Disable Automatic Receiver Polarity Reversal (Per TP Port) . . . . . . . . . . . . . . . . . 1-53
Enable Automatic Receiver Polarity Reversal (Per TP Port) . . . . . . . . . . . . . . . . . 1-53
Disable Receiver Extended Distance Mode (Per TP Port) . . . . . . . . . . . . . . . . . . . 1-53
Enable Receiver Extended Distance Mode (Per TP Port) . . . . . . . . . . . . . . . . . . . 1-53
Disable Software Override of LEDs 5
(Per Port - AUI and TP, Global) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-53
Enable Software Override of Bank A LEDs (Per Port - AUI and TP, Global) . . . . . 1-53
Enable Software Override of Bank B LEDs (Per Port - AUI and TP, Global) . . . . . 1-54
Software Override of LED Blink Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-54
GET (Read Commands) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-54
AUI Port(s) Status. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-54
Alternate AUI Port(s) Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-54
TP Port Partitioning Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-54
Bit Rate Error Status of TP Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-54
Link Test Status of TP ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-55
Receive Polarity Status of TP Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-55
MJLP Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-55
Version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-55
SYSTEMS APPLICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-55
eIMR to TP Port Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-55
Twisted Pair Transmitters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-55
Twisted Pair Receivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-55
MAC Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-57
Internal Arbitration Mode Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-57
IMR+ Mode External Arbitration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-57
Visual Status Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-59
ABSOLUTE MAXIMUM RATINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-60
OPERATING RANGES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-60
DC CHARACTERISTICS over operating ranges unless otherwise specified . . . . . . . . . . . . . . . . . 1-60
SWITCHING CHARACTERISTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-62
KEY TO SWITCHING WAVEFORMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-64
SWITCHING WAVEFORMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-64
SWITCHING TEST CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-69


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