STM32以太网方案介绍.pdf

STM32 Connectivity Line Ethernet TCP/IP introduction 2009年STM32 全国研讨会 北京、深圳、上海、台北、 青岛、重庆、南京、哈尔滨、 武汉、福州、西安 Content STM32F107 Ethernet Generic information about TCP-IP Nichelite TCP-IP Stack Application Examples STM32 全国研讨会 14-25/09/2009 2 The STM32F107 MAC block diagram • Configurable and flexible MAC 802.3 • Support two industry standard interfaces for the PHY – Media Independent Interface (MII) – Reduced Media Independent Interface (RMII) • Integrated DMA controller • Hardware support of IEEE 1588 • Ethernet wakeup event Ethernet A IEEE 1588 H DMA FIFO FIFO B MII / TX RX B RMII u MAC s PHY 802.3 Wake up event MDC / MDIO STM32F107 STM32 全国研讨会 14-25/09/2009 3 Precision Time Protocol (IEEE1588) : What is it • It is a protocol designed to synchronize real-time clocks of the devices of a network • Synchronization is done with the most accurate clock found in a packet-based network: called the Grand Master Clock. • Accuracy is Sub-µsecond Detailed PTP description 09:1009:00 09:0109:00 09:00 Grand Master 09:0509:00 09:3009:00 Clock 09:00