DP83251 Datasheet, PDF (1/96 Pages) National Semiconductor (TI) – PLAYER Device (FDDI Physical Layer Controller)

February 1991
DP83251 55 PLAYER^TM 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