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DP83256VF 데이터시트(PDF) 120 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
부품명 DP83256VF
상세설명  PLAYERa??Device (FDDI Physical Layer Controller)
PDF  144 Pages
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제조업체  NSC [National Semiconductor (TI)]
홈페이지  http://www.national.com
Logo NSC - National Semiconductor (TI)

DP83256VF 데이터시트(HTML) 120 Page - National Semiconductor (TI)

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70 Electrical Characteristics (Continued)
AC Characteristics for the PMD Interface
The following signals are covered PMD Indicate Data (PMID) Signal Detect (SD) and PMD Request Data (PMRD)
Symbol
Parameter
Conditions
Min
Typ
Max
Units
T36
PMIDg to PMRDg Latency
Looped Back through
5
LBC
Configuration Switch
Cycles
LBC1 e 125 MHz
In Lock
(Note 1)
T37
SD Minimum Pulse Width
120
ns
T38
PMRD Rise Time
(Note 2)
15
ns
T39
PMRD Fall Time
(Note 2)
15
ns
Note 1
This only applies when the Alternate PMD Interface is disabled APMDREGAPMDEN e 0
Note 2
This parameter is not tested but is assured by correlation with characterization data
TLF11708 – 36
FIGURE 7-10 Primary PMD Timing Diagrams
120



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