摘要
采用美国国家半导体公司推出的专用集成有IEEE1588精准时钟协议硬件支持功能的以太网收发芯片DP83640,通过在物理层标记PTP时钟同步报文发送和到达的时刻,与TI公司的内置以太网媒体接入控制器(MAC)功能的TMS320DM642芯片连接实现高精度的时钟同步功能。
Adopt the Ethemet transceiver chip DP83640 which specially integrated the function of IEEE1588 precision time ptotoeol hardware support introduced by national semiconductor,mark PTP eolck synchronization message transmission and arrival times in physical layer, to realize the function of high-precision clock synchronization by connecting to the TMS320DM642 chip as the media access controller(MAC) of T1 's build-in Ethernet.
出处
《电子设计工程》
2011年第19期95-98,共4页
Electronic Design Engineering