KSZ8841-PMQL

Controllers Overview

The KSZ8841-PMQL is a single-port Fast Ethernet MAC controller featuring a 32-bit/33 MHz PCI processor interface. It integrates a 10/100BASE-T/TX physical layer transceiver compliant with IEEE 802.3u standards, supporting auto-negotiation for full- and half-duplex modes. The device utilizes a low-power CMOS process with a single 3.3V power supply and 5V tolerant I/O buffers. Internal memory includes an 8 KB buffer for RX/TX FIFO operations. It supports Wake-on-LAN functionality via Magic Packet technology and includes LinkMD cable diagnostic capabilities. The component operates within commercial (0°C to +70°C) and industrial (-40°C to +85°C) temperature ranges.

Controllers Feature Summary

• Supports IEEE 802.3x flow control and burst data transfers with early TX/RX functions to minimize latency.
• Integrates adaptive equalizer and baseline wander correction for enhanced signal integrity without external filters.
• Features HP Auto MDI-X crossover capability to eliminate the need for specific cable types in applications.
• Includes comprehensive LED indicator support for link, activity, duplex status, and speed verification.

Controllers Applications

• Video Distribution Systems
• High-End Cable, Satellite, and IP Set-Top Boxes
• Video over IP
• Voice over IP (VoIP) and Analog Telephone Adapters

Controllers Procurement Notes

Verify the exact ordering suffix against the manufacturer's current documentation to confirm temperature grade and package variations. Ensure compatibility with the host system's PCI bus voltage levels and clock requirements before integration. Cross-reference the datasheet revision history for any operational updates or errata that may affect implementation.

Controllers Selection Notes

Select this component when a single-port solution with a native PCI interface is required for embedded network applications. Consider the industrial temperature variant if operation outside the commercial range is necessary. Evaluate the internal buffer size and DMA capabilities against the host processor's memory management architecture to ensure efficient data throughput.

Controllers Part Context

This part belongs to the KSZ8841 series of single-port Ethernet controllers. It differs from non-PCI variants like the KSZ8841-16M/-32M by providing a dedicated 32-bit/33 MHz PCI bus interface instead of a generic CPU bus. The PMQL designation indicates the PQFP-128 package configuration.

Controllers Replacement Considerations

The KSZ8841-PMQLI serves as the industrial temperature-grade equivalent within the same package and interface specification. Non-PCI alternatives such as the KSZ8841-16MVL-TR require significant interface redesign due to the change from PCI to a generic 8/16-bit bus interface.