Key facts
- Model
- DP25
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-06-12
Start here

National Semiconductor DP83936AVUL-20/25/33 MHz Full Duplex SONIC TM -T Systems-Oriented Network Interface Controller with Twisted Pair Interface handbook
This document is a technical datasheet for the SONIC-T (Systems-Oriented Network Interface Controller with Twisted Pair) from National Semiconductor. It describes the features, functional description, pin connections, register details, and other technical information related to the DP83936AVUL-20/25/33 MHz Full Duplex SONIC-T Network Interface Controller.
The datasheet covers system diagrams, connection diagrams for National/Intel and Motorola modes, detailed pin descriptions, functional descriptions of modules like the Twisted Pair Interface and IEEE 802.3 Encoder/Decoder, buffer management schemes, register definitions, bus interface operations, network interfacing specifications, and AC/DC electrical characteristics.
All National Semiconductor DP25 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
- National Semiconductor DP83936AVUL-20/25/33 MHz Full Duplex SONIC TM -T Systems-Oriented Network Interface Controller with Twisted Pair Interface handbook 104 p
- National Semiconductor DP83934CVUL-20/25 MHz SONIC TM -T Systems-Oriented Network Interface Controller with Twisted Pair Interface handbook 104 p
Questions answered in these manuals
What is the primary function of this controller?
It is a full duplex Ethernet controller designed for use with twisted pair interfaces.
How long does the transmit LED stay active?
The transmit LED is asserted for approximately 50 ms whenever data is transmitted.
What is the primary function of the SONIC-T controller?
It is a second-generation Ethernet Controller designed to meet the demands of today's high-speed 32- and 16-bit systems.
Does the device support external ENDEC units?
Yes, tying the EXT pin to V CC disables the internal ENDEC and allows an external ENDEC to be used.
