KSZ8993F

Specialized ICS Overview

The KSZ8993F is a single-chip Fast Ethernet media converter integrating three MACs, two PHYs, and a Layer 2 switch. It supports 10BASE-T/100BASE-TX to 100BASE-FX conversion with TS-1000 OAM functions for subscriber access network management. The device operates on dual power supplies: 1.8V for the digital core and 3.3V for I/O and transceivers. It features an 1K MAC address lookup table, store-and-forward architecture, and comprehensive configuration interfaces including MII/SNI, SPI, MIIM, SMI, and I2C. Designed for unmanaged operation via I/O strapping, it provides rate limiting, VLAN support, and QoS prioritization.

Specialized ICS Feature Summary

• Integrated 3-Port 10/100 Ethernet Switch with 3 MACs and 2 PHYs
• TS-1000 compliant OAM with remote loop back and far-end fault detection
• Non-blocking switch fabric with 1K MAC Address lookup table
• Supports IEEE 802.1q VLAN and per-port rate limiting

Specialized ICS Applications

• 100BASE-FX to 10BASE-T or 100BASE-TX conversion in FTTx markets
• Subscriber access network management from carrier center to terminal side
• Unmanaged switch designs requiring processor-free configuration

Specialized ICS Procurement Notes

Verify component authenticity through authorized Microchip Technology distributors. Confirm RoHS compliance status and moisture sensitivity level (MSL 3) prior to assembly. Check for specific revision history updates regarding register definitions and voltage pin descriptions found in datasheet revisions P4 through 1.3.

Specialized ICS Selection Notes

Select the KSZ8993F for applications requiring media conversion between copper and fiber optics with integrated OAM capabilities. Ensure system design accommodates the 1.8V core and 3.3V I/O/transceiver power requirements. Verify that the 128-pin PQFP package fits the PCB layout constraints and thermal dissipation needs, as total power dissipation is less than 800mW.

Specialized ICS Part Context

Originally manufactured by Micrel, Inc., this component was acquired by Microchip Technology. The datasheet revision history indicates the addition of the 'KSZ' prefix variants (KSZ8993F) in revision 1.3, aligning with Microchip's product naming conventions while retaining the original functional specifications.

Specialized ICS Replacement Considerations

The KSZ8993FL is the single-supply version with identical features. Cross-reference with other KSZ8993 series variants if different port configurations or interface options are required.