KSZ8721BLI

Product Overview

Category: Integrated Circuit (IC)

Use: The KSZ8721BLI is a high-performance, single-port 10/100 Ethernet physical layer transceiver. It is designed for use in various networking applications.

Characteristics: - Supports both 10BASE-T and 100BASE-TX Ethernet standards - Provides robust performance with low power consumption - Offers advanced features such as auto-negotiation and auto-MDIX - Operates over a wide temperature range (-40°C to +85°C) - Compliant with industry standards including IEEE 802.3 and ISO/IEC 11801

Package: The KSZ8721BLI is available in a small form-factor 48-pin LQFP package.

Essence: This IC serves as a key component in Ethernet systems, enabling the transmission and reception of data packets over Ethernet networks.

Packaging/Quantity: The KSZ8721BLI is typically sold in reels containing 250 units per reel.

Specifications

• Supply Voltage: 3.3V
• Data Rate: 10/100 Mbps
• Operating Temperature Range: -40°C to +85°C
• Package Type: 48-pin LQFP
• Interface: MII/RMII
• Power Consumption: < 200mW

Detailed Pin Configuration

The KSZ8721BLI has a total of 48 pins. Here is a brief overview of some important pins:

• VDD33: Power supply pin (3.3V)
• TXD0/TXD1: Transmit data pins
• RXD0/RXD1: Receive data pins
• CRS_DV: Carrier Sense/Data Valid
• MDIO/MDC: Management Data I/O and Clock
• RESET: Reset pin
• LED[0-3]: LED indicators for link/activity status

For a complete pin configuration diagram, please refer to the datasheet.

Functional Features

The KSZ8721BLI offers several functional features that enhance its performance and usability:

• Auto-Negotiation: Automatically detects and configures the best possible connection speed and duplex mode.
• Auto-MDIX: Eliminates the need for crossover cables by automatically detecting and correcting the polarity of the connected Ethernet cable.
• Energy-Efficient Ethernet (EEE): Reduces power consumption during periods of low network activity.
• Link Quality Indicator (LQI): Provides a measure of the link quality to aid in troubleshooting and diagnostics.
• Loopback Mode: Allows for self-testing and diagnostics by looping back transmitted data to the receiver.

Advantages and Disadvantages

Advantages: - High-performance transceiver with support for both 10BASE-T and 100BASE-TX standards. - Low power consumption, making it suitable for energy-efficient applications. - Compact package size enables integration into space-constrained designs. - Compliance with industry standards ensures compatibility with various networking devices.

Disadvantages: - Limited to single-port connectivity, not suitable for multi-port applications without additional components. - Requires external magnetics for proper isolation and signal conditioning.

Working Principles

The KSZ8721BLI operates based on the principles of Ethernet communication. It receives incoming data packets, decodes them, and forwards them to the appropriate destination. Similarly, it encodes outgoing data packets and transmits them over the Ethernet network. The IC incorporates various protocols and algorithms to ensure reliable and efficient data transmission.

Detailed Application Field Plans

The KSZ8721BLI is widely used in various networking applications, including but not limited to: - Ethernet switches - Network interface cards (NICs) - Industrial automation systems - Home and office networking equipment - Embedded systems with Ethernet connectivity

Its versatility and compatibility make it suitable for both consumer and industrial applications.

Detailed and Complete Alternative Models

While the KSZ8721BLI is a reliable choice, there are alternative models available in the market that offer similar functionality. Some notable alternatives include: - KSZ8081MNX: Single-port 10/100 Ethernet PHY with reduced power consumption. - DP83848CVV: Integrated 10/100 Ethernet transceiver with advanced diagnostics features. - LAN8720A/LAN8720Ai: Low-power Ethernet PHY with integrated voltage regulators.

These alternative models can be considered based on specific application requirements and design constraints.

In conclusion, the KSZ8721BLI is a high-performance Ethernet physical layer transceiver that offers robust performance and advanced features. Its compact size, low power consumption, and compliance with industry standards make it a popular choice for various networking applications.