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AM68A: Time synchronization over Ethernet ( PTP) (CPSW) with use of CPTS

Part Number: AM68A

Tool/software:

Dear Team,

The time synchronization with Ethernet ( PTP) with use of CPTS , as we see is already done sw, but i have some questions:

1) Do you have a application note or overview how it is implemented in .pdf or only the source code in SDK?

2) Does the implementation use MAIN dome CPTS or MCU domain CPTS when using the RGMII port for ethernet ? 

3) What internal clock ( RCLK for the 64b counter for timestamping) is used by CPTS when used for MCU_CPSW and what when used by MAIN_CPSW?

Best Regards,

d.

  • Hi,

    We have TSN example on PDK ENET only for Main CPSW2G, which uses Main CPTS for timesync with external network.

    We don't have Multi-core time sync support in TI SDK.

    1) Do you have a application note or overview how it is implemented in .pdf or only the source code in SDK?

    The PDK talks about Timesync and how to sync with other cores.
    As of now sync with other cores is not supported in SDK, only timesync with external network using TSN stack was available in TI SDK.

    2) Does the implementation use MAIN dome CPTS or MCU domain CPTS when using the RGMII port for ethernet ? 

    3) What internal clock ( RCLK for the 64b counter for timestamping) is used by CPTS when used for MCU_CPSW and what when used by MAIN_CPSW?

    This is address in above, as TSN example supported in SDK is only for Main CPSW2G, It is uses Main CPTS module for timeysnc.
    CPTS reference clock is 500MHz.

    Best Regards,
    Sudheer