LAN9250/ML

Product Overview

Category: Integrated Circuit (IC)

Use: The LAN9250/ML is a highly integrated Ethernet controller designed for embedded applications. It provides a complete solution for connecting devices to an Ethernet network.

Characteristics: - High-performance Ethernet connectivity - Low power consumption - Small form factor - Robust and reliable operation

Package: The LAN9250/ML comes in a compact package, making it suitable for space-constrained designs.

Essence: The LAN9250/ML is the core component that enables devices to communicate over an Ethernet network.

Packaging/Quantity: The LAN9250/ML is typically sold in reels or trays, with quantities varying depending on the manufacturer's specifications.

Specifications

The LAN9250/ML offers the following specifications:

• Ethernet Compliance: IEEE 802.3
• Data Rate: 10/100 Mbps
• Interface: SPI (Serial Peripheral Interface)
• Operating Voltage: 3.3V
• Temperature Range: -40°C to +85°C

Pin Configuration

The LAN9250/ML features a detailed pin configuration as follows:

1. VDDIO: Power supply for I/O pins
2. VDDA: Analog power supply
3. VSS: Ground
4. INTB: Interrupt output
5. SCLK: Serial clock input
6. MOSI: Master Out Slave In data input
7. MISO: Master In Slave Out data output
8. CSB: Chip select input
9. RESET: Reset input
10. VDDCORE: Core power supply
11. VSSCORE: Core ground
12. CLK25M: 25 MHz clock input
13. REFCLK: Reference clock input
14. RXD[3:0]: Receive data inputs
15. TXD[3:0]: Transmit data outputs

Functional Features

The LAN9250/ML offers the following functional features:

• Full-duplex and half-duplex operation modes
• Auto-negotiation for speed and duplex mode
• Integrated 10/100 Mbps Ethernet PHY
• Support for various network protocols (TCP/IP, UDP, etc.)
• Built-in DMA engine for efficient data transfer
• Power management features for low power consumption

Advantages and Disadvantages

Advantages: - High-performance Ethernet connectivity - Compact form factor - Low power consumption - Robust and reliable operation - Support for various network protocols

Disadvantages: - Limited to 10/100 Mbps data rate - Requires external components for complete system integration

Working Principles

The LAN9250/ML operates by receiving and transmitting Ethernet frames over the network. It utilizes the integrated Ethernet PHY to establish a physical connection and implements various network protocols to enable data communication. The built-in DMA engine ensures efficient data transfer between the LAN9250/ML and the host device.

Detailed Application Field Plans

The LAN9250/ML is widely used in various embedded applications that require Ethernet connectivity. Some of the common application fields include:

1. Industrial Automation: Enables communication between industrial devices and control systems over an Ethernet network.
2. Internet of Things (IoT): Facilitates connectivity for IoT devices, allowing them to exchange data with other devices or cloud services.
3. Home Automation: Integrates Ethernet connectivity into home automation systems, enabling remote control and monitoring of devices.
4. Automotive: Provides Ethernet connectivity for automotive applications such as infotainment systems, telematics, and advanced driver-assistance systems (ADAS).

Alternative Models

For users seeking alternatives to the LAN9250/ML, the following models provide similar functionality:

1. LAN8720: Another Ethernet controller with a smaller form factor and lower power consumption.
2. ENC28J60: A popular Ethernet controller with SPI interface, suitable for low-cost applications.
3. W5500: Offers integrated TCP/IP stack and Ethernet connectivity in a single chip.

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

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