Single-Port Ethernet MAC Controller with PCI Interface The KSZ8841-PMQL is a highly integrated Ethernet switch controller manufactured by Microchip Technology. Below are the factual details about its specifications, descriptions, and features:
### **Manufacturer:**
Microchip Technology
### **Specifications:**
- **Type:** Single-chip, 2-port Ethernet switch controller
- **Ports:** 2 x 10/100 Mbps Ethernet ports
- **Interface:** MII (Media Independent Interface) for MAC connectivity
- **MAC Support:** Integrated 2-port switch MAC
- **PHY Support:** Integrated 10/100 PHYs
- **Packet Buffer Memory:** 64 KB shared packet buffer
- **VLAN Support:** IEEE 802.1Q VLAN tagging
- **QoS Support:** IEEE 802.1p priority queuing (4 queues per port)
- **Flow Control:** IEEE 802.3x flow control (full-duplex), backpressure (half-duplex)
- **Management Interface:** MIIM (Management Data Input/Output) for PHY configuration
- **Power Supply:** 3.3V operation
- **Package:** 128-pin LQFP (Low-profile Quad Flat Package)
- **Operating Temperature Range:** Commercial (0°C to 70°C)
### **Descriptions:**
The KSZ8841-PMQL is a cost-effective, low-power, and high-performance Ethernet switch controller designed for embedded networking applications. It integrates two 10/100 Ethernet PHYs with a switch fabric, reducing external component count. It supports advanced features such as VLAN tagging, QoS prioritization, and flow control, making it suitable for industrial, consumer, and enterprise applications.
### **Features:**
- **Integrated 2-Port Switch:** Combines MAC and PHY in a single chip.
- **Auto-Negotiation:** Supports auto-negotiation for speed (10/100 Mbps) and duplex mode.
- **Energy-Efficient Ethernet (EEE):** Compliant with IEEE 802.3az for reduced power consumption.
- **Jumbo Frame Support:** Supports frames up to 2 KB in size.
- **LED Indicators:** Supports link/activity and speed status LEDs.
- **Spanning Tree Protocol (STP):** Supports loop prevention in network topologies.
- **Hardware-Based Filtering:** MAC address filtering and forwarding.
- **Low Power Consumption:** Optimized for energy efficiency.
This information is based solely on the manufacturer's datasheet and technical documentation.
