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DP83924BVCENSN/a256avaiQuad 10 Mb/s Ethernet Physical Layer


DP83924BVCE ,Quad 10 Mb/s Ethernet Physical LayerFeatures– Enhanced Supply Rejection■ 100 pin package– Enhanced Jitter Performance■ 10BASE-T and AUI ..
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DP83924BVCE
Quad 10 Mb/s Ethernet Physical Layer
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October 1998
DP83924BVCE
Quad 10 Mb/s Ethernet Physical Layer - 4TPHY™
General Description

The DP83924B Quad 10Mbps Ethernet Physical Layer
(4TPHY) is a 4-Port Twisted Pair PHYsical Layer Trans-
ceiver that includes all the circuitry required to interface
four Ethernet Media Access Controllers (MACs) to
10BA SE-T. This device is ideally suited for switch hub
applications where 8 to 32 ports are commonly used.
The 4TPHY has three dedicated 10Base-T ports. There is
an additional port that is selectable for either 10Base-T or
for an Attachment Unit Interface (AUI). In 10Base-T mode,
any port can be configured to be Half or Full Duplex.
(Continued)
Features
100 pin package 10BASE-T and AUI interfaces Automatic or manual selection of twisted pair or Attach-
ment Unit Interfaces on port 1 Direct Interface to NRZ Compatible controllers IEEE 802.3u Auto-Negotiation between 10Mb/s Full
and Half Duplex data traffic and parallel detection MII-like Serial management interface for configuration
and monitoring of ENDEC/Transceiver operation.
System Diagram
8392 AUI
TPI
MAC Serial
NRZ Interface
10BASE-T DP83924B
10BASE-2
Serial Mgmt Interface
TXD4,TXE4
RXD4,RXC4,COL4,CRS4

(port 1 option)
MAC
TXD3,TXE3
RXD3,RXC3,COL3,CRS3
TXD2,TXE2
RXD2,RXC2,COL2,CRS2
TXD1,TXE1
RXD1,RXC1,COL1,CRS1
TXC

ports 1-4
MDIO MDC Programmable MAC Interface supports most
standard 7 signal MAC interfaces Twisted Pair Transceiver Module On-chip filters for transmit outputs Low Power Driver Heartbeat and Jabber Timers Link Disable and Smart Receive Squelch Polarity detection and correction Jabber Enable/Disable Isolate mode for diagnostics Low Power Class AB Attachment Unit Interface (AUI)
Driver for one port Enhanced Supply Rejection Enhanced Jitter Performance Diagnostic Endec Loopback Squelch on Collision and Receive Pair Serial LED interface for LINK, POLARITY, ACTIVITY,
and ERROR. JTAG Boundary Scan per IEEE 1149.1
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