DP83934CVUL-25

Controllers Overview

The DP83934CVUL-25 is a SONIC-T Systems-Oriented Network Interface Controller with a Twisted Pair Interface. It integrates an IEEE 802.3 Encoder/Decoder and supports 10BASE-T Ethernet. The device features a 32-bit non-multiplexed address and data bus, high-speed interruptible DMA, and linked-list buffer management. It includes two independent 32-byte transmit and receive FIFOs, complete address filtering for up to 16 physical/multicast addresses, and a 32-bit general-purpose timer. Fabricated in low-power CMOS, it operates within a commercial temperature range of 0°C to 70°C.

Controllers Feature Summary

• Integrates IEEE 802.3 ENDEC and Twisted Pair Interface for a one-chip 10BASE-T solution
• Supports big and little endian byte ordering via selectable bus modes
• Provides auto AUI/TPI selection and loopback diagnostics
• Includes full network management facilities supporting the 802.3 layer management standard

Controllers Applications

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

Controllers Procurement Notes

Verify component authenticity through authorized channels as this part may be obsolete. Confirm package integrity and pin alignment against the 160-PQFP specification. Review datasheet SNLS088A for detailed electrical characteristics and timing requirements before integration into new designs.

Controllers Selection Notes

Select this controller for systems requiring integrated twisted pair interface capabilities without external transceivers. Ensure the host processor supports the required 32-bit bus interface modes. Consider the linked-list buffer management architecture for efficient memory utilization in packet processing applications.

Controllers Part Context

The DP83934 is part of the SONIC-T family developed by National Semiconductor, now Texas Instruments. It serves as a second-generation Ethernet controller designed to reduce component count and simplify design for 10BASE-T networks. The CVUL-25 suffix indicates specific speed and packaging variants within the broader SONIC-T product line.

Controllers Replacement Considerations

Consult official replacement guides for modern equivalents. Verify compatibility with existing bus architectures and software drivers when transitioning from legacy SONIC controllers to newer integrated PHY solutions.