LAN9254数据手册集成电路（IC）的控制器规格书PDF

描述 Description

Microchip’s LAN9254 is a 3 port EtherCAT device controller (ESC) with dual integrated Ethernet PHYs which each provide a full-duplex 100BASE-TX transceiver and support 100Mbps (100BASE-TX) operation. The LAN9254 supports HP Auto-MDIX, allowing the use of direct connect or cross-over LAN cables. This device provides system developers a cost-effective solution for realizing EtherCAT device solutions.\r
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The LAN9254 includes a 3 port EtherCAT device controller with 8K bytes of Dual Port memory (DPRAM), 8 SyncManagers, 8 Fieldbus Memory Management Units (FMMUs) and a 64-bit Distributed Clock.\r
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This device includes feature additions over LAN9252 and LAN9253 which answer our customers' requests for enhanced cycle time, additional IO channels, integration and system level cost savings.\r
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It supports multiple Process Data Interfaces - SPI/SQI, HBI and Digital IO. SPI and SQI (high speed SPI) provide a low pin count synchronous device interface that facilitates communication between the device and a host system. Whereas, the Host Bus Interface facilitates the same via a high-speed asynchronous device interface. For simple digital modules without micro-controllers, the LAN9254 can also operate in Digital I/O Mode where 32 digital signals can be controlled or monitored by the EtherCAT master. LAN9254 also supports a fully de-multiplexed host interface\r
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The LAN9254 can be configured to operate via a single 3.3V supply utilizing an integrated 3.3V to 1.2V linear regulator. The internal linear regulator may also be disabled, allowing usage of a high efficiency external regulator for lower system power dissipation.\r
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The LAN9254 is available in commercial, industrial and extended industrial temperature ranges and is packaged in 80 pin TQFN.

特性 Features

• 2/3-port EtherCAT slave controller with 8 Fieldbus Memory Management Units (FMMUs) and 8 SyncManagers\r
• Interfaces to most 8/16-bit embedded controllers and 32-bit embedded controllers with an 8/16-bit bus\r
• Optional demultiplexed host bus interface\r
• Dual Integrated Ethernet PHYs with HP Auto-MDIX\r
• 1.8V to 3.3V variable voltage I/O\r
• Integrated 1.2V core regulator for single 3.3V operation\r
• 32 DIGIOs\r
• TQFP package\r
• Clock daisy chain & Option to operate without ESI EEPROM\r
• Cable diagnostics\r
• Open / short\r
• Cable length

应用 Application

• Stand alone IO modules\r
• Data Acquisition\r
• Process/Factory Automation\r
• Power Grid Automation\r
• Building Automation\r
• Power supplies and UPS

简介

LAN9254属于集成电路（IC）的控制器。由制造生产的LAN9254控制器该系列产品主要用于在采用不同通信协议和/或信令方法的端点之间提供信息连接。示例包括将 I2C 总线连接到 UART，将 USB 连接到 I2C、SPI、以太网或 UART、以太网 MAC 和 PHY 等的器件。此外，还包括用于通过为点对点通信设计的接口建立多路连接的器件，例如 USB 集线器控制器。