KS8993ML

Specialized ICS Overview

The KS8993ML is a Layer 2 managed switch IC from the Micrel KS8993M family, now under Microchip Technology. It integrates three MAC units and two 10/100 transceivers with an on-chip frame buffer and address look-up engine. The device supports 10BASE-T, 100BASE-TX, and one port supporting 100BASE-FX for fiber applications. Operating in the commercial temperature range of 0°C to +70°C, it features QoS prioritization, VLAN support, and multiple management interfaces including SMI, SPI, I2C, and MIIM.

Specialized ICS Feature Summary

• Integrated Layer 2 Managed Switch: Includes three MACs, two PHYs (10/100), and a high-speed non-blocking switch fabric.
• Advanced Management Features: Supports IEEE 802.1q VLAN (up to 16 groups), 802.1p QoS priority, rate limiting, and broadcast storm protection.
• Flexible Interfaces: Provides MII/SNI, SMI, SPI, and I2C access for CPU control and register configuration.
• Physical Layer Capabilities: Auto-MDIX support for copper ports and 100BASE-FX capability for media converter applications.

Specialized ICS Applications

• Voice over IP (VoIP) phones requiring low latency
• Industrial Ethernet applications
• Integrated DSL/Cable Modems
• Set-Top Boxes and Game Consoles
• SOHO Residential Gateways

Specialized ICS Procurement Notes

Verify the manufacturer lineage as the KS8993M series was originally developed by Micrel Semiconductor before acquisition by Microchip Technology. Confirm that the 'ML' suffix corresponds to the industrial temperature grade (-40°C to +85°C) if required, although local data specifies commercial operation. Ensure compatibility with existing system power rails (1.8V or 2.5V/3.3V options) and package dimensions (128-PQFP 14x20 mm).

Specialized ICS Selection Notes

Select the KS8993ML when a managed switch solution is needed for cost-sensitive, low-port-count systems. It is suitable for designs requiring hardware-based VLAN tagging, QoS enforcement, and remote management via standard serial interfaces. Consider the specific power supply requirements and temperature range constraints of the target environment against the available family variants.

Specialized ICS Part Context

The KS8993ML belongs to the KS8993M family, which also includes KS8993M and KS8993MI. These devices share the same core architecture but differ in packaging, voltage options, and operating temperature ranges. The ML variant typically denotes a specific package and temperature combination within this managed switch lineup.

Specialized ICS Replacement Considerations

Direct replacements within the same family include KS8993M and KS8993MI, depending on temperature and package requirements. Cross-family alternatives may include other Micrel/Microchip 3-port switches like the KSZ8893 series, though feature sets and pinouts will differ significantly.

Specialized ICS FAQ

Does the KS8993ML support fiber optic connections?

Yes, one of its PHY ports supports 100BASE-FX, making it suitable for managed media converter applications involving fiber optics.

What management interfaces are supported?

The device supports SMI, SPI, I2C, and MII management (MIIM) interfaces for accessing registers and configuring switch parameters.

Is the switch unmanaged or managed?

The KS8993ML is a Layer 2 managed switch, offering features such as VLAN, QoS, and MIB counters, unlike the unmanaged KS8993 variant.