DP83902A - ST-NIC Serial Network Interface Controller for Twisted Pair [Obsolete]

Datasheet	Obsolete Versions	Application Notes	Knowledge Base

Features

•	Single chip solution for IEEE 802.3, 10BASE-T
•	Integrated controller, ENDEC, and transceiver
•	Full AUI interface
•	No external precision components required
•	3 levels of loopback supported Transceiver Module
•	Integrates transceiver electronics, including:
•	Transmitter and receiver
•	Collision detect, heartbeat and jabber timer
•	Link integrity test
•	Link disable and polarity detection/correction
•	Integrated smart receive squelch
•	Reduced squelch level for extended distance cable operation (100-pin QFP version) ENDEC Module
•	10 Mb/s Manchester encoding/decoding, plus clock recovery
•	Transmitter half or full step mode
•	Squelch on receive and collision pairs
•	Lock time 5 bits typical
•	Decodes Manchester data with up to ±18 ns jitter MAC/Controller Module
•	100% DP8390 software/hardware compatible
•	Dual 16-bit DMA channels
•	16-byte internal FIFO
•	Efficient buffer management implementation
•	Independent system and network clocks
•	Supports physical, multicast and broadcast address filtering
•	Network statistics storage

General Description

The DP83902A Serial Network Interface Controller for Twisted Pair (ST-NIC) is a microCMOS VLSI device designed for easy implementation of CSMA/CD local area networks. More...

Additional Resources

Application Notes

Datasheet

RoHS Compliance Information	Size in Kbytes	Date
DP83902A ST-NIC(TM) Serial Network Interface Controller for Twisted Pair	851 Kbytes	7-Jan-96	Download

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Obsolete Versions

Obsolete Part	Alternate Part or Supplier	Source	Last Time Buy Date
DP83902AV	NONE	NATIONAL SEMICONDUCTOR	16 Nov 2008
DP83902AVJG	NONE	NONE	30 Nov 2009
DP83902AVLJ	NONE	NATIONAL SEMICONDUCTOR	25 Oct 2005

General Description

The DP83902A Serial Network Interface Controller for Twisted Pair (ST-NIC) is a microCMOS VLSI device designed for easy implementation of CSMA/CD local area networks. These include Ethernet (10BASE5), Thin Ethernet (10BASE2) and Twisted-pair Ethernet (10BASE-T). The overall ST-NIC solution provides the Media Access Control (MAC) and Encode-Decode (ENDEC) with an AUI interface, and 10BASE-T transceiver functions in accordance with the IEEE 802.3 standards.

The DP83902A's 10BASE-T transceiver fully complies with the IEEE standard. This functional block incorporates the receiver, transmitter, collision, heartbeat, loopback, jabber, and link integrity blocks as defined in the standard. The transceiver when combined with equalization resistors, transmit/receive filters, and pulse transformers provides a complete physical interface from the DP83902A's ENDEC module and the twisted pair medium.

The integrated ENDEC module allows Manchester encoding and decoding via a differential transceiver and phase lock loop decoder at 10 Mbit/sec. Also included are collision detect translator and diagnostic loopback capability. The ENDEC module interfaces directly to the transceiver module, and also provides a fully IEEE compliant AUI (Attachment Unit Interface) for connection to other media transceivers.

More Application Notes

Title	Size in Kbytes	Date
AN-975: Designing Multiple Function PC Cards	74 Kbytes	5-Aug-95	Download

If you have trouble printing or viewing PDF file(s), see Printing Problems.

[Information as of 8-Nov-2009]