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DP83952 Datasheet(PDF) 80 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # DP83952
Description  Repeater Interface Controller with Security Features (RIC II)
PDF  90 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

DP83952 Datasheet(HTML) 80 Page - National Semiconductor (TI)

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100 Timing and Load Diagrams
PORT ARBITRATION TIMING
TLF12499 – 24
Number
Symbol
Parameter
Min
Max
Units
T1
ackilackol
ACKI Low to ACKO Low
24
ns
T2
ackihackoh
ACKI High to ACKO High
21
ns
Note
Timing valid with no receive or collision activities
Note
In these diagrams the Inter-RIC and Management Busses are shown using active high signals active low signals may also be used See Mode Load
Operation description
RECEIVE TIMINGSAUI PORTS
Receive activity propagation start up and end delays for ports in non 10BASE-T mode
TLF12499 – 25
Number
Symbol
Parameter
Min
Max
Units
T3a
rxaackol
RX Active to ACKO Low
66
ns
T4a
rxiackoh
RX Inactive to ACKO High
325
ns
T5a
rxaactna
RX Active to ACTNd Active
105
ns
T6a
rxiactni
RX Inactive to ACTNd Inactive
325
ns
Note
ACKI assumed high
RECEIVE TIMING10BASE-T PORTS
Receive activity propagation start up and end delays for ports in 10BASE-T mode
TLF12499 – 26
Number
Symbol
Parameter
Min
Max
Units
T3t
rxaackol
RX Active to ACKO Low
240
ns
T4t
rxiackoh
RX Inactive to ACKO High
255
ns
T5t
rxaactna
RX Active to ACTNd Active
270
ns
T6t
rxiactni
RX Inactive to ACTNd Inactive
265
ns
Note
ACKI assumed high
80



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