●General Description
●The DP83924B Quad 10Mbps Ethernet Physical Layer (4TPHY) is a 4-Port Twisted Pair PHYsical Layer Transceiver that includes all the circuitry required to interface four Ethernet Media Access Controllers (MACs) to 10BASE-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.
●Features
●100 pin package
●10BASE-T and AUI interfaces
●Automatic or manual selection of twisted pair or Attachment 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.
●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
