KSZ8441FHLI

Controllers Overview

The KSZ8441FHLI is an IEEE 1588v2-enabled Ethernet controller featuring an integrated MAC and PHY. It supports 10BASE-T and 100BASE-TX standards with copper and fiber mode capabilities. The device includes a flexible 8- or 16-bit host bus interface, 12 Kbyte RX FIFO, and 6 Kbyte TX FIFO. It operates on a single 3.3V supply with optional 1.8V/2.5V I/O and functions within an industrial temperature range of -40°C to +85°C. The component is housed in a 64-pin LQFP package.

Controllers Feature Summary

• Supports IEEE 1588v2 Precision Time Protocol with hardware-based time stamping for sub-microsecond synchronization.
• Integrates an adaptive equalizer and HP Auto MDI/MDI-X crossover support for reliable link establishment.
• Provides extensive GPIO capabilities synchronized to the precision time clock for event monitoring and control.
• Includes comprehensive power management features such as Energy Efficient Ethernet (EEE) and Wake-on-LAN.

Controllers Applications

• Industrial Ethernet networks requiring sub-microsecond synchronization
• IEC 61850 power substation automation systems
• Real-time motion control and measurement equipment

Controllers Procurement Notes

Verify the specific suffix 'FHLI' against the manufacturer's current datasheet revision DS00002640A to confirm package type and temperature grade. Ensure the ordering information matches the exact pinout and electrical specifications required for the target application design.

Controllers Selection Notes

Select this component when precise time synchronization via IEEE 1588v2 is mandatory for Layer 2 communication. Consider the integrated MAC and PHY architecture to reduce system complexity. Evaluate the 8- or 16-bit host interface compatibility with the target processor before finalizing the design.

Controllers Part Context

This part belongs to the KSZ8441HL/FHL family of Ethernet controllers designed for industrial applications. It complements Microchip's PTP software stack and drivers. The device is positioned as a solution for centralized topology end-points requiring robust synchronization and low power consumption.

Controllers Replacement Considerations

Consult the official datasheet for confirmed substitute part numbers. Verify that any replacement maintains IEEE 1588v2 compliance and compatible host interface timing requirements.

Controllers FAQ

Does the KSZ8441FHLI support both End-to-End and Peer-to-Peer Transparent Clock modes?

Yes, the Port 1 MAC can be programmed as either an End-to-End (E2E) or Peer-to-Peer (P2P) Transparent Clock (TC) port for IEEE 1588 support.

What is the function of the GPIO pins regarding IEEE 1588v2?

Seven programmable GPIO pins are synchronized to the precision time clock and can be used for 1 PPS generation, frequency generation, control bit streams, event monitoring, and precision pulse generation.

How does the device handle cable connection types?

It features HP Auto MDI/MDI-X crossover support, which eliminates the need to differentiate between straight-through and crossover cables by automatically detecting and correcting the connection.