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DP83261 Datasheet(PDF) 117 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # DP83261
Description  BMAC Device (FDDI Media Access Controller)
PDF  132 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

DP83261 Datasheet(HTML) 117 Page - National Semiconductor (TI)

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80 Electrical Characteristics (Continued)
842 Clock Signals
Symbol
Parameter
Min
Max
Units
T21
LSC to LBC Lead Time (Skew Left)
b
46
ns
T22
LSC Pulse Width High
12
ns
T23
LSC Pulse Width Low
21
ns
T24
LBC Pulse Width High
35
45
ns
T25
LBC Pulse Width Low
35
45
ns
TLF10387 – 32
FIGURE 8-5 Clock Signals
843 PHY Interface
Symbol
Parameter
Min
Max
Units
T26
PHY Data Input Setup
15
ns
T27
PHY Data Input Hold
5
ns
T28
PHY Data Sustain
10
ns
T29
PHY Data Valid
45
ns
TLF10387 – 33
Note
All setup and hold testing is done on single edges only (ie no combined setuphold testing is done for pulse signals This implies that the signal makes only
one low to high or high to low transition per cycle)
FIGURE 8-6 PHY Interface Timing
117



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