KSZ8842-16MQL

Controllers Overview

The KSZ8842-16MQL is a two-port Ethernet switch with a non-PCI CPU interface, manufactured by Microchip Technology. It supports IEEE 802.3u standards for 10BASE-T and 100BASE-TX networks. The device features an 8/16-bit generic host processor interface and operates within a commercial temperature range of 0°C to +70°C. It utilizes a single 3.3V power supply and is housed in a 128-pin PQFP package.

Controllers Feature Summary

• Fully managed Layer-2 switching capabilities including VLAN support, QoS prioritization, and IGMP snooping.
• Configurable as a low-latency repeater or switch with store-and-forward architecture.
• Integrated LinkMD cable diagnostic functionality for fault detection and distance measurement.
• Supports dynamic buffer memory schemes suitable for video-over-IP applications.

Controllers Applications

• Video distribution systems
• Industrial control in latency-critical applications
• Voice over IP (VoIP) and Analog Telephone Adapters (ATA)
• Security and surveillance cameras

Controllers Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to confirm pinout compatibility and electrical specifications. Ensure the component meets the required commercial temperature range and package type for your design. Cross-reference the document revision history for any errata that may impact implementation.

Controllers Selection Notes

Select this model when a non-PCI interface is required for system integration. The -16 suffix indicates support for 8-bit or 16-bit bus widths. Consider the -32 variant if a 32-bit interface is necessary. Verify that the host processor can support the required synchronous or asynchronous bus modes defined in the datasheet.

Controllers Part Context

This component belongs to the KSZ8842 series of two-port Ethernet switches. It is part of the KSZ8842M family, which specifically denotes non-PCI CPU interface designs. The series includes industrial temperature variants and different bus width options to accommodate various embedded and industrial Ethernet requirements.

Controllers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Consult the manufacturer's official replacement guide or contact technical support for validated alternatives compatible with the KSZ8842-16MQL specifications.

Controllers FAQ

What is the maximum operating frequency for the bus interface clock?

The local bus interface clock (BCLK) has a maximum frequency of 50 MHz for synchronous bus systems.

How is the physical transmit output current set?

The ISET pin sets the physical transmit output current. It should be pulled down to ground with a 3.01 kΩ 1% resistor.

What is the function of the PWRDN pin?

The PWRDN pin controls full-chip power-down. A low signal activates power-down mode, while high or floating states allow normal operation.