VSC8664XIC-03

Overview

The VSC8664XIC-03 is a quad-port Ethernet PHY supporting 10/100/1000BASE-T copper interfaces and a 100BASE-FX/1000BASE-X SerDes media interface. It integrates recovered clock outputs, IEEE 802.3af PoE support, and ActiPHY power management features including low-power states and link partner wake-up capabilities. The device provides comprehensive testing functions such as VeriPHY cable diagnostics, loopback modes, and JTAG boundary scan access for manufacturing validation.

Feature Summary

• Supports automatic media-sense switching between twisted pair and fiber media
• Integrates advanced SerDes receiver equalization and transmitter amplitude control
• Includes integrated two-wire serial multiplexer for simplified SFP module control
• Provides configurable LED modes with extended behavior options

Applications

• Industrial Ethernet switches requiring mixed copper and fiber connectivity
• Data center aggregation nodes utilizing SerDes uplinks
• PoE-enabled network infrastructure equipment
• Telecom access points with transformerless Ethernet designs

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to ensure correct package type and temperature range specifications. Confirm that the component meets all required environmental standards for the intended deployment environment before finalizing procurement orders.

Selection Notes

Select this component when a design requires four Gigabit copper ports alongside a high-speed SerDes uplink. Ensure the host processor supports the necessary Serial Management Interface (SMI) or Two-Wire Serial Mux protocols for configuration. Verify that the system power budget accommodates the active current consumption during full duplex operation.

Part Context

This part belongs to the VSC8664 family of multi-standard Ethernet transceivers manufactured by Microchip Technology. The series is designed for high-density networking applications requiring flexible media connectivity. It serves as a bridge between standard twisted pair cabling and optical fiber networks within enterprise and industrial switch architectures.

Replacement Considerations

Consult the official datasheet revision history for confirmed substitute part numbers. Verify pin compatibility and register mapping equivalence before attempting any hardware replacement in existing designs.