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 KbytesDate Click link below to Download
DP83902A ST-NIC(TM) Serial Network Interface Controller for Twisted Pair 851
Kbytes
7-Jan-96 Download

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Obsolete Versions

Obsolete PartAlternate Part or SupplierSourceLast 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


TitleSize in Kbytes Date Click link below to Download
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]