DP83902AVJG/NOPB

Controllers Overview

The DP83902AVJG/NOPB is a Serial Network Interface Controller (ST-NIC) designed for 10BASE-T Ethernet implementations. It integrates Media Access Control (MAC), Encode-Decode (ENDEC), and a twisted-pair transceiver into a single microCMOS VLSI device. The component supports 10 Mbit/sec data rates with Manchester encoding/decoding via a phase lock loop decoder. It features dual 16-bit DMA channels, a 16-byte internal FIFO, and independent system and network clocks. The device operates on a 5V supply and includes full AUI interface support for connection to other media transceivers.

Controllers Feature Summary

• Integrates MAC, ENDEC, and 10BASE-T transceiver functions on a single chip
• Supports full AUI interface for external transceiver connectivity
• Provides three levels of loopback diagnostics for testing
• Includes smart receive squelch and link integrity test capabilities

Controllers Applications

• Implementation of 10BASE-T twisted pair local area networks
• Integration with 10BASE5 or 10BASE2 media via AUI interface
• CSMA/CD network station or DTE interface design

Controllers Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and environmental rating. Confirm that the NOPB suffix indicates lead-free compliance as per the datasheet specifications. Ensure the source document matches the part number exactly before procurement.

Controllers Selection Notes

Select this controller for designs requiring a complete IEEE 802.3 compliant solution without external precision components. Consider the 100-pin QFP package availability for reduced squelch level operations if extended cable distance operation is required. Verify bus interface compatibility with the target CPU architecture.

Controllers Part Context

This component belongs to the National Semiconductor DP83902 series of ST-NIC controllers. It is software and hardware compatible with the earlier DP8390 model. The device represents a single-chip solution for implementing Ethernet network interfaces in embedded systems.

Controllers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.