1Technical Committee on SensorTechnology, IEEE Standard for a Pre-cision Clock Synchronization Protocolfor Networked Measurement and Con-trol Systems,24 July 2008.
2National Semiconductor Corporation,DP83640 Precision PHYTER IEEE1588 Precision Time ProtocolTransceiver, January 7,2009.
3National Semiconductor Corporation,National Semiconductor EthernetPHYTER Software Development Guide,October 2,2008.
1David L. Mills. Internet timekeeping around the globe.In Proc. Precision Time and Time Interval (PTTI) Applications and Planning Meeting, Univercity of Delaware,1997(12):365～371.
2David Deeths and Glenn Brunette. Using NTP to Control and Synchronize. Sun BluePrintstm OnLine, 2001:7～11.
3David L. Simple Network Time Protocol (SNTP) Version 4 for IPv4, IPv6 and OSI. RFC - 2030,1996, 10.
