SJA1105 时间戳

[BravoEven]

您好，我想通过SJA1105配置时间戳功能，但是使用过滤模式时如果使用

MAC_FLTRES[0]阈值的地址作为目的地址，则似乎会被丢弃，也没有等到META帧，对应设置如下，请问是其他地方还需要设置吗？另一种TCAM设置转发规则我也没搞通，痛苦，，求解惑！谢谢

[lukaszadrapa]

Hi @BravoEven 

In order to use timestamping, it's necessary to use frame trapping (this is explained in more detail in the AH1704 (7.3 Timestamping and AVB).
https://www.nxp.com/webapp/Download?colCode=AH1704&location=null

Also please read chapter 7.3.3 1-step and 2-step SYNC frames.
An example for gPTP can be found in chapter 7.6.6 of the respective application hints.

Regards,

Lukas

[BravoEven]

Hello 

      now I want to take the egress timestamp of frame to the host port, for example, a PTP sync frame is forwarded from port1 to port0(host port), I can get the ingress time stamp by the META frame, but how can i get the egress timestamp to calculate the resident time?