KSZ8721BL-TR

Product Overview

Category

The KSZ8721BL-TR belongs to the category of Ethernet Physical Layer Transceivers.

Use

It is primarily used for providing physical layer connectivity in Ethernet communication systems.

Characteristics

• Supports 10/100 Mbps data rates
• Compliant with IEEE 802.3 standards
• Low power consumption
• Integrated termination resistors
• Supports Auto-MDIX (Automatic Medium-Dependent Interface Crossover)
• Small form factor package

Package

The KSZ8721BL-TR is available in a small 48-pin Thin Quad Flat Pack (TQFP) package.

Essence

The essence of the KSZ8721BL-TR lies in its ability to provide reliable and efficient Ethernet connectivity in various applications.

Packaging/Quantity

The product is typically packaged in reels, with each reel containing a specific quantity of KSZ8721BL-TR transceivers.

Specifications

• Data Rate: 10/100 Mbps
• Supply Voltage: 3.3V
• Operating Temperature Range: -40°C to +85°C
• Interface: MII (Media Independent Interface)
• Package Type: TQFP-48

Detailed Pin Configuration

The KSZ8721BL-TR features a total of 48 pins, each serving a specific purpose. The detailed pin configuration is as follows:

(Pin Number) - (Pin Name) - (Description) 1 - VDDIO - I/O Power Supply 2 - VDDA - Analog Power Supply 3 - VDDD - Digital Power Supply 4 - VSS - Ground 5 - TXEN - Transmit Enable 6 - TXD[0] - Transmit Data Bit 0 7 - TXD[1] - Transmit Data Bit 1 8 - TXD[2] - Transmit Data Bit 2 9 - TXD[3] - Transmit Data Bit 3 10 - TXCLK - Transmit Clock 11 - TXER - Transmit Error 12 - CRSDV - Carrier Sense/Data Valid 13 - RXD[0] - Receive Data Bit 0 14 - RXD[1] - Receive Data Bit 1 15 - RXD[2] - Receive Data Bit 2 16 - RXD[3] - Receive Data Bit 3 17 - RXCLK - Receive Clock 18 - RXER - Receive Error 19 - COL - Collision 20 - MDC - Management Data Clock 21 - MDIO - Management Data I/O 22-25, 27-30, 32-35, 37-40, 42-45 - NC (No Connection) 26 - REFCLKO - Reference Clock Output 31 - VDDXTAL - Crystal Oscillator Power Supply 36 - XTAL2 - Crystal Oscillator Input 41 - XTAL1 - Crystal Oscillator Output 46 - VDDPLL - PLL Power Supply 47 - PLLCLK - PLL Clock Output 48 - VSSPLL - Ground

Functional Features

The KSZ8721BL-TR offers several functional features that enhance its performance and usability:

• Auto-Negotiation: The transceiver supports auto-negotiation, allowing it to automatically determine the best possible connection speed and duplex mode.
• LinkMD+: This feature provides advanced cable diagnostics, enabling the detection of cable faults and issues.
• Energy Efficient Ethernet (EEE): The KSZ8721BL-TR supports EEE, which reduces power consumption during periods of low network activity.
• Loopback Modes: It offers various loopback modes for testing and troubleshooting purposes.

Advantages and Disadvantages

Advantages

• High-speed data transmission at 10/100 Mbps
• Low power consumption
• Integrated termination resistors simplify circuit design
• Auto-MDIX eliminates the need for crossover cables

Disadvantages

• Limited to 10/100 Mbps data rates, not suitable for Gigabit Ethernet applications
• Requires an external crystal oscillator for clock generation

Working Principles

The KSZ8721BL-TR operates based on the principles of Ethernet communication. It receives and transmits data packets using the MII interface, following the IEEE 802.3 standards. The transceiver converts the digital signals into analog signals suitable for transmission over Ethernet cables.

Detailed Application Field Plans

The KSZ8721BL-TR finds application in various fields, including:

1. Networking Equipment: It is used in switches, routers, and other networking devices to provide physical layer connectivity.
2. Industrial Automation: The transceiver enables Ethernet connectivity in industrial automation systems, facilitating communication between different components.
3. Automotive: It is utilized in automotive applications for Ethernet-based communication within vehicles.
4. Internet of Things (IoT): The KSZ8721BL-TR can be integrated into IoT