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AM79C989 Datasheet(PDF) 35 Page - Advanced Micro Devices

No. de pieza AM79C989
Descripción Electrónicos  Quad Ethernet Switching Transceiver (QuEST??
PDF  37 Pages
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Fabricante Electrónico  AMD [Advanced Micro Devices]
Página de inicio  http://www.amd.com
Logo AMD - Advanced Micro Devices

AM79C989 Datasheet(HTML) 35 Page - Advanced Micro Devices

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Am79C989
35
PRELIMINARY
Attachment Unit Interface (AUI)
Figure 5.
AUI Timing Diagram
(DO+) – (DO–)
VASQ
(CI+) – (CI–)
32
33
VASQ
(DI+) – (DI–)
30
31
34
100 mV
40 mV
80 Bit Times
21173B-9
No.
Symbol
Parameter Description
Min
Max
Unit
30
tPWODI
DI Pulse Width Accept/Reject Threshold.
15
45
ns
31
tPWKDI
DI Pulse Width Maintain/Turn-Off Threshold.
136
200
ns
32
tPWOCI
CI Pulse Width Accept/Reject Threshold.
10
26
ns
33
tPWKCI
CI Pulse Width Maintain/Turn-Off Threshold.
90
160
ns
34
tDOETD
DO
± End of Transmission Delimiter.
275
375
ns



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