LAN91C113-NU

Product Overview

Category: Network Interface Controller (NIC)

Use: The LAN91C113-NU is a high-performance Ethernet controller designed for embedded systems. It provides a reliable and efficient solution for connecting devices to local area networks (LANs).

Characteristics: - High-speed data transfer capability - Low power consumption - Compact package size - Robust design for industrial applications - Support for various network protocols

Package: The LAN91C113-NU comes in a small form factor package, making it suitable for space-constrained designs. It is available in surface mount technology (SMT) package.

Essence: The LAN91C113-NU is an essential component for enabling network connectivity in embedded systems. It allows devices to communicate with each other over Ethernet networks, facilitating data exchange and remote control capabilities.

Packaging/Quantity: The LAN91C113-NU is typically sold in reels or trays, depending on the manufacturer's packaging standards. The quantity per reel or tray may vary, but it is commonly available in quantities of 100 or more.

Specifications

The LAN91C113-NU offers the following specifications:

• Ethernet Standards: IEEE 802.3, 10BASE-T, 100BASE-TX
• Data Transfer Rate: 10 Mbps (half-duplex), 20 Mbps (full-duplex)
• Operating Voltage: 3.3V
• Power Consumption: <200mW
• Interface: Serial Peripheral Interface (SPI)
• Operating Temperature Range: -40°C to +85°C
• Package Dimensions: 7mm x 7mm

Detailed Pin Configuration

The LAN91C113-NU has the following pin configuration:

1. VDD - Power supply voltage
2. GND - Ground
3. TXD0 - Transmit data bit 0
4. TXD1 - Transmit data bit 1
5. TX_EN - Transmit enable
6. RXD0 - Receive data bit 0
7. RXD1 - Receive data bit 1
8. RX_ER - Receive error indication
9. CRS_DV - Carrier sense and data valid
10. MDC - Management Data Clock
11. MDIO - Management Data I/O
12. INT - Interrupt output
13. REF_CLK - Reference clock input
14. RESET - Reset input

Functional Features

The LAN91C113-NU offers the following functional features:

• Full-duplex and half-duplex operation modes
• Automatic speed negotiation (10/100 Mbps)
• Auto-MDIX for automatic crossover detection
• Integrated DMA controller for efficient data transfer
• Support for Wake-on-LAN functionality
• Built-in hardware support for checksum offloading
• Power management features for reduced power consumption

Advantages and Disadvantages

Advantages: - High-performance Ethernet connectivity - Compact size for space-constrained designs - Low power consumption for energy-efficient operation - Robust design suitable for industrial applications - Support for various network protocols

Disadvantages: - Limited availability of alternative models - May require additional components for complete network implementation - Relatively higher cost compared to basic Ethernet controllers

Working Principles

The LAN91C113-NU operates by receiving and transmitting Ethernet frames over the network. It utilizes the SPI interface to communicate with the host microcontroller or processor. The controller handles the low-level details of Ethernet communication, including frame formatting, error checking, and protocol handling.

When receiving data, the LAN91C113-NU checks for errors, performs necessary error correction, and passes the received frames to the host system. For transmission, it takes data from the host system, encapsulates it into Ethernet frames, and sends them over the network.

Detailed Application Field Plans

The LAN91C113-NU finds applications in various fields, including:

1. Industrial Automation: Enables communication between industrial devices and control systems over Ethernet networks.
2. Internet of Things (IoT): Facilitates connectivity for IoT devices, allowing them to exchange data and interact with other devices.
3. Home Automation: Integrates Ethernet connectivity into home automation systems, enabling remote control and monitoring capabilities.
4. Automotive: Provides network connectivity for automotive applications, such as infotainment systems and vehicle diagnostics.
5. Medical Devices: Enables communication between medical devices and central monitoring systems, improving patient care and data analysis.

Detailed and Complete Alternative Models

While the LAN91C113-NU is a reliable and widely used Ethernet controller, there are alternative models available in the market. Some notable alternatives include:

1. LAN8720 - A low-power Ethernet PHY with similar features and performance.
2. ENC28J60 - A popular Ethernet controller with SPI interface, suitable for cost-sensitive designs.
3. DP83848 - A robust Ethernet trans