LAN9118-MT

Product Overview

Category: Network Interface Controller (NIC)

Use: The LAN9118-MT is a high-performance Ethernet controller designed for use in embedded systems. It provides a reliable and efficient solution for connecting devices to local area networks (LANs).

Characteristics: - Fast Ethernet (10/100 Mbps) support - Low power consumption - Small form factor - Robust design for industrial applications - Integrated 10/100 Base-TX physical layer interface - Supports various network protocols (TCP/IP, UDP, etc.)

Package: The LAN9118-MT comes in a compact surface-mount package, making it suitable for space-constrained designs.

Essence: The LAN9118-MT enables seamless network connectivity in embedded systems, facilitating data transfer and communication between devices.

Packaging/Quantity: The LAN9118-MT is typically packaged in reels or trays, with quantities varying based on customer requirements.

Specifications

• Interface: SPI (Serial Peripheral Interface)
• Data Rate: 10/100 Mbps
• Operating Voltage: 3.3V
• Power Consumption: <150mW
• Temperature Range: -40°C to +85°C
• Dimensions: 7mm x 7mm

Detailed Pin Configuration

The LAN9118-MT has the following pin configuration:

1. VDDIO: Power supply for I/O pins
2. VDD: Power supply for internal circuitry
3. GND: Ground
4. INT_N: Interrupt output
5. SCLK: Serial clock input
6. MOSI: Master output, slave input
7. MISO: Master input, slave output
8. CS_N: Chip select input
9. RESET_N: Reset input
10. TX_EN: Transmit enable
11. TXD0: Transmit data bit 0
12. TXD1: Transmit data bit 1
13. RXD0: Receive data bit 0
14. RXD1: Receive data bit 1
15. CRS_DV: Carrier sense, data valid
16. RX_ER: Receive error

Functional Features

• Integrated MAC (Media Access Control) and PHY (Physical Layer) functions
• Supports full-duplex and half-duplex communication modes
• Auto-negotiation for optimal speed and duplex settings
• Built-in DMA (Direct Memory Access) engine for efficient data transfer
• Wake-on-LAN support for remote device wake-up
• Jumbo frame support for enhanced data transmission efficiency

Advantages and Disadvantages

Advantages: - High-performance Ethernet controller - Low power consumption - Compact form factor - Suitable for industrial applications - Supports various network protocols

Disadvantages: - Limited to 10/100 Mbps data rate - Requires external SPI interface for communication

Working Principles

The LAN9118-MT operates by receiving and transmitting Ethernet frames over a local area network. It utilizes the integrated MAC and PHY functions to handle data encapsulation, error checking, and physical layer signaling. The controller communicates with the host system through the SPI interface, enabling seamless integration into embedded systems.

Detailed Application Field Plans

The LAN9118-MT is widely used in various embedded systems that require network connectivity. Some common application fields include:

1. Industrial Automation: Enables communication between industrial devices and control systems, facilitating real-time monitoring and control.
2. Internet of Things (IoT): Connects IoT devices to the internet, allowing for remote monitoring and management.
3. Home Automation: Integrates network connectivity into smart home devices, enabling centralized control and automation.
4. Automotive: Provides network connectivity for automotive systems, such as infotainment systems and vehicle diagnostics.
5. Medical Devices: Enables communication between medical devices and healthcare systems, facilitating data exchange and remote monitoring.

Detailed and Complete Alternative Models

1. LAN8720: Similar Ethernet controller with additional features like RMII (Reduced Media Independent Interface) support.
2. ENC28J60: Low-cost Ethernet controller with SPI interface, suitable for basic network connectivity in embedded systems.
3. DP83848: Robust Ethernet PHY chip with MII (Media Independent Interface) interface, ideal for industrial applications.

These alternative models offer different features and capabilities, allowing designers to choose the most suitable solution for their specific requirements.

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