LAN7800-I/Y9X

Product Overview

Category: Ethernet Controller
Use: LAN7800-I/Y9X is a high-performance, low-power USB 2.0 to 10/100/1000 Gigabit Ethernet controller. It provides a compact and cost-effective solution for adding Ethernet connectivity to various devices such as embedded systems, gaming consoles, set-top boxes, and industrial applications.
Characteristics: The LAN7800-I/Y9X offers advanced features like IEEE 802.3az Energy Efficient Ethernet (EEE), Wake-on-LAN support, and integrated voltage regulators. It supports both full-duplex and half-duplex operation modes and is compatible with USB 1.1 and USB 2.0 standards.
Package: The LAN7800-I/Y9X comes in a small form factor package, making it suitable for space-constrained designs.
Essence: This Ethernet controller enables devices without built-in Ethernet ports to connect to wired networks, providing fast and reliable network connectivity.
Packaging/Quantity: The LAN7800-I/Y9X is available in tape and reel packaging, with a minimum order quantity of 2500 units.

Specifications

• USB Interface: USB 2.0
• Ethernet Interface: 10/100/1000 Mbps
• Operating Voltage: 3.3V
• Power Consumption: < 300mW
• Temperature Range: -40°C to +85°C
• Package Type: QFN (Quad Flat No-Lead)
• Dimensions: 6mm x 6mm

Detailed Pin Configuration

The LAN7800-I/Y9X has the following pin configuration:

1. VDD33: Power supply (3.3V)
2. VDDA: Analog power supply (3.3V)
3. VDDIO: I/O power supply (3.3V)
4. VBUS: USB power supply
5. D-: USB data minus
6. D+: USB data plus
7. ID: USB ID pin
8. GND: Ground
9. TXEN: Transmit enable
10. TXD[0:3]: Transmit data
11. RXD[0:3]: Receive data
12. CRS: Carrier sense
13. RXER: Receive error
14. REFCLK: Reference clock
15. CLKOUT: Clock output
16. RESET: Reset pin

Functional Features

• IEEE 802.3az Energy Efficient Ethernet (EEE) support for reduced power consumption during idle periods.
• Wake-on-LAN support allows the device to be remotely powered on from a sleep state.
• Integrated voltage regulators eliminate the need for external regulators, reducing BOM cost and board space requirements.
• Auto-negotiation feature ensures compatibility with different network speeds (10/100/1000 Mbps).
• Jumbo frame support for improved network performance.

Advantages and Disadvantages

Advantages: - High-performance Ethernet controller with USB 2.0 interface. - Low-power consumption for energy-efficient operation. - Compact form factor suitable for space-constrained designs. - Supports various network speeds (10/100/1000 Mbps). - Wake-on-LAN support enables remote device activation.

Disadvantages: - Limited availability in small quantities. - Requires additional components for complete network connectivity (Ethernet magnetics, RJ-45 connector, etc.).

Working Principles

The LAN7800-I/Y9X operates by converting USB data packets into Ethernet frames and vice versa. It utilizes the USB 2.0 interface to communicate with the host device and the integrated Ethernet interface to connect to the wired network. The controller handles tasks such as packet encapsulation, error checking, and flow control to ensure reliable data transmission.

Detailed Application Field Plans

The LAN7800-I/Y9X can be used in various applications, including: - Embedded systems - Gaming consoles - Set-top boxes - Industrial automation - Networked peripherals - IoT devices

Detailed and Complete Alternative Models

Some alternative models to the LAN7800-I/Y9X include: - LAN7801: Similar features and specifications, but with a different package type (QFP). - LAN7802: Dual-port Ethernet controller with USB 2.0 interface. - LAN7850: USB 2.0 to 10/100 Ethernet controller with reduced feature set.

These alternative models offer flexibility in terms of package options, port count, and feature sets, allowing designers to choose the most suitable solution for their specific requirements.

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