●General Description
●The Quad 10 Mb/s Ethernet Transceiver is a 4-Port Encoder/Decoder (ENDEC) that includes all the circuitry required to interface four Ethernet Media Access Control lers (MACs) to 10BASE-T. This device is ideally suited for switch hub applications where 8, 16, 24, or 32 ports are commonly used.
●The DP83924A 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.
●Features
●100 pin package
●10BASE-T and AUI interfaces
●4 ports TP interface with TRI-STATE control
●Single Full AUI and TP Interface on port 1 supports 50 meter drops
●Automatic or manual selection of twisted pair or Attach ment Unit Interfaces on port 1
●Direct Interface to NRZ Compatible controllers
●MII-Like Management Interface
●Serial management interface for configuration and monitoring of ENDEC/Transceiver operation
●Twisted Pair Transceiver Module
●– On-chip filters for transmit outputs
●– Adjustable Equalization and Amplitude
●– Low Power Driver
●– Heartbeat and Jabber Timers
●– Link Disable and Smart Receive Squelch
●– Polarity detection and correction
●– Jabber Enable/Disable
●ENDEC Module (one per port)
●– 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
