最近在学习使用LPC1766以太网MAC+交换机+DP83640 实现分布式网络的时间同步，请问以太网帧中的目标、源地址怎么确定？ 阅读DP83640器件后发现下面这样的语句：这说明DP83640的地址固定就下面列举的这几个？？（感觉不可能）
那如果我在3个4端口的交换机上接了8个DP83640，，这个源，目标地址应该怎么确定？还是IEEE 1588协议有其它方法实现？学习中，真诚求教！！


Phy Status Frame Mac Source Address:
Selects source address as follows:
00 : Use Mac Address [08 00 17 0B 6B 0F]
01 : Use Mac Address [08 00 17 00 00 00]
10 : Use Mac Multicast Dest Address
11 : Use Mac Address [00 00 00 00 00 00]


Select MAC Destination Address for Phy Control Frames:
0 : Use MAC Address [08 00 17 0B 6B 0F]
1 : Use MAC Address [08 00 17 00 00 00]
The device will also recognize packets with the above address with the
Multicast bit set (i.e. 09 00 17 ...). 此帖出自小平头技术问答