產品說明0

  DFRobot原廠 以太網絡擴展板 Ethernet Shield-W5200 (DFR272)For Arduino®

　　如何讓你的Arduino設備上網？Arduino網絡擴展板是最好的選擇。只要將這款W5200網絡擴展板插到你的UNO或者Mega主板上，接上RJ45網線，然後燒好代碼，即可將Arduino設備輕鬆連接到網絡。板載MicroSD卡接口，可在一些複雜應用上做大容量數據存儲，如存儲Web網頁數據等。

　　W5200芯片是一種採用全硬件TCP/ IP協議棧的嵌入式以太網控制器，它能使嵌入式系統通過SPI(串行外設接口)接口輕鬆地連接到網絡。W5200特別適合那些需要使用MCU來實現互聯網功能的客戶，而這就需要單片機系統具有完整的TCP/ IP協議棧和10/100Mbps以太網網絡層（MAC）和物理層（PHY）。

　　W5200是由已經通過市場考驗的全硬件TCP/ IP協議棧、及以太網網絡層和物理層的整合而成。其全硬件的TCP/ IP協議棧全程支持TCP、UDP、IPv4、ICMP、ARP、IGMP和PPPoE協議，而且已經連續多年在各種實際應用中得以證明。
W5200使用32KB緩存作為其數據通信內存。通過使用W5200，用戶只需通過使用一個簡單的socket程序就能實現以太網的應用，而不再需要處理一個複雜的以太網控制器了。

　　SPI(串行外設接口) 提供了輕鬆與外部MCU連接的接口。W5200支持高達80MHZ的SPI接口間通信。為了降低系統功率的消耗，W5200提供了網絡喚醒和休眠模式。

　　W5200收到原始以太網數據包形式的magic packet時將被喚醒

【技術規格】

• 支持硬件TCP/IP協議: TCP、UDP、ICMP、IPv4、ARP、IGMP、PPPoE和以太網
• 支持8個獨立的端口(sockets)
• 支持休眠及網絡喚醒
  
• 支持高速SPI總線(SPI模式0,3)
  
• 內部32K字節TX/RX緩存內嵌10/100Mbps以太網物理層
  
• 支持自動應答(全雙工/半雙工模式、10/100-based)
  
• 支持自動極性變換(MDI/MDIX)
  
• 支持ADSL連接(與PAP/CHAP驗證模式下，支持PPPOE協議)
  
• 3.3V工作電壓，I/O口可承受5V電壓
  
• 多種LED指示燈信號輸出(全雙工/半雙工模式、網絡連接和網絡速度)

 

產品圖片

相關文件

• 產品資料
• DOCUMENTS
  • Product Wiki
  • Library Download

　　Connect your Arduino device to the Internet with this Ethernet Shield. This Ethernet Shield is based on the W5200 Ethernet Chip and provides an easy way of getting your Arduino Online. Just plug this shield onto your Arduino UNO or Mega board, connect it to your network with an RJ45 Ethernet Cable (not included) and follow few simple instructions, you will be able to explore the world with the Internet. Besides, the shield has a microSD card port for large capacity data storage like Webpage data when applied in complicated applications.

　　The W5200 chip is a Hardwired TCP/IP embedded Ethernet controller that enables easier internet connection for embedded systems using SPI (Serial Peripheral Interface). W5200 suits best for users who need Internet connectivity for the application that uses a single chip to implement TCP/IP Stack, 10/100 Ethernet MAC, and PHY.

　　The W5200 is composed of a fully hardwired market-proven TCP/IP stack and an integrated Ethernet MAC & PHY. Hardwired TCP/IP stack supports TCP, UDP, IPv4, ICMP, ARP, IGMP, and PPPoE, which has been proven in various applications for many years. W5200 uses a 32Kbytes internal buffer as its data communication memory. By using W5200, users can implement the Ethernet application they need by using a simple socket program instead of handling a complex Ethernet Controller.

　　SPI (Serial Peripheral Interface) is provided for easy integration with the external MCU. Using the only 4 pins of SPI to connect with MCU, it is possible to design for small form factor system with the MCU’s I/O pin limit. In order to reduce the power consumption of the system, W5200 provides WOL (Wake on LAN) and power-down mode. To wake up during WOL, W5200 should be received a magic packet, which is the Raw Ethernet packet.

 

問與答