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DP83256 датащи(PDF) 124 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
номер детали DP83256
подробное описание детали  PLAYERa??Device (FDDI Physical Layer Controller)
PDF  144 Pages
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производитель  NSC [National Semiconductor (TI)]
домашняя страница  http://www.national.com
Logo NSC - National Semiconductor (TI)

DP83256 датащи(HTML) 124 Page - National Semiconductor (TI)

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70 Electrical Characteristics (Continued)
AC Characteristics for the PMD Interface Outputs (ANSI Specifications)
The following output signals are covered PMD Request Data (PMRD) Transmit Clock (TXC) Recovered Data Out
(RXD
OUT) Recovered Clock Out (RXC
OUT)
Note
The Alternate PMD Interface is only available on the 160 pin DP83257 PLAYERa Device and the 100 pin DP83256-AP Device The Transmit Clock is
enabled by the CGMREGTXCE bit The rest of the Alternate PMD Interface is enabled by the APMDREGAPMDEN bit
Comments in square brackets are section references to the ANSI documents where these specifications can be found
Symbol
Parameter
Conditions
Min
Typ
Max
Units
T57
PMRD Total Transmit Jitter
(Note 1)
072
ns p-p
Duty Cycle Distortion (DCD)a
PMD 81
Data Dependent Jitter (DDJ)a
Random Jitter (RJ)
T58
Total Recovered Clock (RXC
OUT) Jitter
(Note 1)
25
ns p-p
Static Alignment Error Accuracy (SAE)a
PMD E2
Clock Data Dependent Jitter (C
DDJ)a
Random Jitter (C
RJ)
Note 1
This parameter is not tested but is assured through characterization data and periodic testing of sample units
124



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