DP83936AVUL-20

Controllers Overview

The DP83936AVUL-20 is a full-duplex SONIC-T systems-oriented network interface controller designed for 10BASE-T Ethernet applications. It integrates an IEEE 802.3 encoder/decoder and twisted pair interface to provide a one-chip solution. The device features a 32-bit non-multiplexed address and data bus with high-speed DMA that typically consumes less than 5% of bus bandwidth. It supports selectable big and little endian byte ordering and includes two independent 32-byte transmit and receive FIFOs. The controller implements linked-list buffer management for efficient packet processing without intermediate copying.

Controllers Feature Summary

• Integrated IEEE 802.3 ENDEC and Twisted Pair Interface
• Configurable for Full Duplex operation
• Linked-list buffer management system
• Complete address filtering for up to 16 physical and/or multicast addresses

Controllers Applications

• High-speed 32-bit and 16-bit system motherboard designs
• PC-oriented Ethernet adapters
• Bridge and repeater applications

Controllers Procurement Notes

Verify the specific suffix AVUL-20 against the manufacturer's current documentation to confirm pinout compatibility and electrical specifications. Ensure the source document matches the literature number SNLS105A. Confirm package type is 160 PQFP. Check for any regional compliance variations in the official datasheet.

Controllers Selection Notes

Select this component when a complete 10BASE-T solution is required on a single chip. It is suitable for systems needing full duplex capability and efficient DMA performance. Consider the integrated ENDEC if external transceivers are not desired. Verify bus mode compatibility with the target microprocessor architecture before integration.

Controllers Part Context

This part belongs to the National Semiconductor SONIC-T family, now under Texas Instruments. It is a second-generation Ethernet controller designed to replace older discrete solutions. Similar parts include the DP83934 and DP83932, which offer different interface options or half-duplex configurations. The AVUL-20 variant specifically targets 20 MHz clock speeds.

Controllers Replacement Considerations

Public confirmed substitute part numbers: DP83936AVUL-25, DP83936AVUL-33.