KS8995M

Specialized ICS Overview

The KS8995M is a Layer-2 managed switch integrating five MACs and five Fast Ethernet transceivers compliant with IEEE 802.3u. It features a shared memory-based non-blocking fabric with 1.4 Gbps bandwidth and on-chip frame buffering. Ports 1–3 support 10BaseT/100BaseTX, while Ports 4 and 5 additionally support 100BaseFX. The device includes dual MII interfaces (MII-Switch and MII-P5), an SPI slave management interface, and a dedicated address look-up engine. Power requirements are 1.8V for the core and 2.5V or 3.3V for I/O.

Specialized ICS Feature Summary

• Integrated 5-port switch with 10/100 Mbps PHYs and 64Kbyte on-chip frame buffer
• Dual MII configuration supporting MAC mode (MII-Switch) and PHY mode (MII-P5)
• IEEE 802.1q VLAN support with 16 VLANs and per-port tag/untag options
• Comprehensive QoS including 802.1p/d/q prioritization and programmable rate limiting

Specialized ICS Applications

• Broadband gateway, firewall, and VPN systems
• Integrated DSL or cable modem multi-port routers
• Wireless LAN access points combined with gateways
• Managed media converters for fiber-to-copper conversion
• Enterprise VoIP gateways and hotel/campus MxU gateways

Specialized ICS Procurement Notes

Verify the manufacturer origin as Micrel, Inc., which was acquired by Microchip Technology. Confirm the specific temperature grade required: KS8995M covers 0°C to +70°C, while KS8995MI covers -40°C to +85°C. Ensure the package matches the 128-pin PQFP specification. Check for lead-free variants such as KSZ8995M if RoHS compliance is mandatory for the application.

Specialized ICS Selection Notes

Select the KS8995M when a cost-sensitive, low-port-count solution is needed for Fast Ethernet applications. Use this component if the design requires integrated fiber connectivity via Ports 4 and 5 (100BaseFX). Ensure the host CPU supports the SPI slave interface for register configuration or utilizes the MII interfaces for high-speed data transfer. Verify that the system power budget accommodates the 1.8V core and 2.5V/3.3V I/O rails.

Specialized ICS Part Context

The KS8995M belongs to the Micrel KS8995 family of integrated switches. It serves as the commercial temperature variant (0°C to +70°C) within this series. The industrial temperature version is designated as KS8995MI (-40°C to +85°C). The lead-free equivalent in the same package is identified as KSZ8995M. These parts are designed to optimize bill-of-materials costs for embedded networking devices.

Specialized ICS Replacement Considerations

Public documentation lists the KS8995MI as the direct industrial-grade replacement for the commercial KS8995M. The KSZ8995M is available as a lead-free alternative with identical electrical characteristics. No other cross-model substitutes are confirmed in the provided source material.