KS8995MA

Specialized ICS Overview

The KS8995MA is a Layer 2 managed switch IC from Micrel (now Microchip Technology). It integrates five MACs and five fast Ethernet transceivers compliant with IEEE 802.3u, supporting 10BASE-T, 100BASE-TX, and 100BASE-FX media. The device features a shared memory-based non-blocking switch fabric with 1.4 Gbps bandwidth and an on-chip 64 Kbyte frame buffer. Operating voltages include 1.8 V for the core and 3.3 V for digital/analog I/O. It supports dual MII interfaces, SPI/MDIO management, VLAN tagging, QoS prioritization, and IGMP snooping within a 128-pin PQFP package.

Specialized ICS Feature Summary

• Integrated 5-port 10/100 switch with copper and fiber support
• Non-blocking switch fabric with 1.4 Gbps memory bandwidth
• Layer 2 management including VLAN, QoS, and IGMP snooping
• Dual MII configuration and 7-wire SNI legacy interface support

Specialized ICS Applications

• Broadband gateway, firewall, and VPN systems
• Integrated DSL or cable modem multi-port routers
• Wireless LAN access points with gateway functionality
• Managed media converters for fiber-to-copper conversion

Specialized ICS Procurement Notes

Verify the manufacturer origin as Micrel or Microchip Technology due to acquisition history. Confirm the specific temperature grade required: commercial (KS8995MA) covers 0°C to +70°C, while industrial variants (KS8995MAI) cover -40°C to +85°C. Ensure the package matches the 128-pin PQFP specification.

Specialized ICS Selection Notes

Select the KS8995MA for cost-sensitive low port count applications requiring both copper and optical fiber connectivity. Choose the industrial variant if operation below 0°C is necessary. Verify that the system design accommodates the 1.8V core and 3.3V I/O power requirements and utilizes the available MII or SNI control interfaces.

Specialized ICS Part Context

This component belongs to the KS8995 family of integrated Ethernet switches. It serves as a highly integrated solution for managing Fast Ethernet traffic in embedded networking devices. The part number suffix 'MA' specifically denotes the commercial temperature range version of this 5-port managed switch.

Specialized ICS Replacement Considerations

The KSZ8995MA is the lead-free equivalent of the KS8995MA. For industrial temperature ranges, consider the KS8995MAI or KSZ8995MAI. The KS8995FQ is a similar pin-compatible part but supports fiber ports on different physical pins.