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National Semiconductor - (DP83251 / DP83255) PLAYER Device

Numéro de référence DP83251
Description (DP83251 / DP83255) PLAYER Device
Fabricant National Semiconductor 
Logo National Semiconductor 





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DP83251 fiche technique
www.DataSheet4U.com
February 1991
DP83251 55 PLAYERTM Device
(FDDI Physical Layer Controller)
General Description
The DP83251 DP83255 PLAYER device implements one
Physical Layer (PHY) entity as defined by the Fiber Distribut-
ed Data Interface (FDDI) ANSI X3T9 5 Standard The PLAY-
ER device contains NRZ NRZI and 4B 5B encoders and
decoders serializer deserializer framing logic elasticity
buffer line state detector generator link error detector re-
peat filter smoother and configuration switch
Features
Y Low power CMOS-BIPOLAR process
Y Single 5V supply
Y Full duplex operation
Y Separate management interface (Control Bus)
Y Parity on PHY-MAC Interface and Control Bus Interface
Y On-chip configuration switch
Y Internal and external loopback
Y DP83251 for single attach stations
Y DP83255 for dual attach stations
FIGURE 1-1 FDDI Chip Set Block Diagram
TL F 10386 – 1
TRI-STATE is a registered trademark of National Semiconductor Corporation
BSITM BMACTM PLAYERTM CDDTM and CRDTM are trademarks of National Semiconductor Corporation
C1995 National Semiconductor Corporation TL F 10386
RRD-B30M105 Printed in U S A

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