DP83840A Description
The DP83840A is a Physical Layer device for Ethernet 10BASE-T and 100BASE-X using category 5 Unshielded, Type 1 Shielded and Fiber Optic cables. This VLSI device is designed for easy implementation of 10/100 Mb/s Ethernet LANs. It interfaces to the PMD sublayer through National Semiconductor's DP83223 Twisted Pair Transceiver, and to the MAC layer through a Media Independent Interface (MII), ensuring...
DP83840A Key Features
- IEEE 802.3u 100BASE-X patible--support for 2 pair Category 5 UTP (100m), Type 1 STP and Fiber Optic Transceivers--Connec
- ANSI X3T12 TP-PMD patible
- IEEE 802.3u Auto-Negotiation for automatic speed selection
- IEEE 802.3u patible Media Independent Interface (MII) with Serial Management Interface
- Integrated high performance 100 Mb/s clock recovery circuitry requiring no external filters
- Full Duplex support for 10 and 100 Mb/s
- MII Serial 10 Mb/s output mode
- Fully configurable node and repeater modes--allows operation in either application
- Programmable loopback modes for easy system diagnostics
- Flexible LED support