DP83850CVF

Specialized Overview

The DP83850CVF is a 100 Mb/s TX/T4 Repeater Interface Controller (100RIC) designed for high-speed Ethernet networking systems. It supports up to twelve 100 Mb/s links and is compatible with IEEE 802.3 repeater clause 27. The device integrates separate jabber and partition state machines, an on-chip elasticity buffer for PHY signal re-timing, and a serial register interface. It connects via MII to management devices like the DP83856 for managed entity functionality. The component is housed in a 132-pin PQFP package.

Specialized Feature Summary

• Supports Class II TX translational repeater and Class I T4 repeater configurations
• Integrates per-port jabber protection and auto-partition state machines
• Features an on-chip elasticity buffer for clock skew compensation
• Provides serial register interface for physical layer device control

Specialized Applications

• Construction of large Ethernet hubs using cascaded repeater chips
• Managed repeater systems compatible with IEEE 802.3u clause 30
• High-speed Ethernet networking system interconnects

Specialized Procurement Notes

Verify component authenticity through official manufacturer channels or authorized distributors. Confirm the specific ordering suffix matches the required package and temperature range. Review the datasheet revision history for any functional updates or pinout changes prior to integration into new designs.

Specialized Selection Notes

Select this controller for applications requiring support for both 100BASE-TX and 100BASE-T4 PHY technologies. Ensure the design accommodates the 132-pin PQFP footprint and provides the necessary 25 MHz local clock input. Verify compatibility with the target management base device for statistics collection if managed operation is required.

Specialized Part Context

This component belongs to the National Semiconductor DP83850 series of repeater interface controllers. It serves as the central logic unit for managing multiple physical layer connections within a repeater architecture. The device enables scalable hub designs by supporting inter-repeater bus cascading.

Specialized Replacement Considerations

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