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AM6548: Datasheet update

Sushruta Shetty
Intellectual 655 points

Part Number: AM6548

Hi,

We are using AM6548 SoC in our design. We have used Datasheet Rev F for our board design.

However, it has come to our notice that the revision has been updated to Rev H in June 2019.

There are few changes in the updated datasheet wrt to the old revision datasheets

Listed below are the few changes wrt to previous and updated datasheet versions:

1.The voltage supply that powers the terminal IO buffers for SDCD and SDWP were VDDSHV6. However, in the updated datasheet it is VDDS_OSC1.

2. Unused Balls Specific Connection Requirements

We have SDWP lines pulled up to VDDSHV6.

We are aware that the current chip silicon revision is a pre-production release. We wanted to understand if these changes will be reflected only in the next silicon revision or will be affected in the present build too.  

Kindly advice.

  • 0
    TI__Genius 16020 points

    Hi Sushruta,

    1.  The voltage supply change will be reflected in future silicon revisions.  We will be publishing an errata advisory for AM65x SR1.0 highlighting that the LVCMOS IOs associated with device pins MMC0_SDCD (A23) and MMC0_SDWP (B23) receive power from VDDSHV6 and device pins MMC1_SDCD (B24) and MMC1_SDWP (C24) receive power from VDDSHV7 rather than VDDS_OSC1 on AM65x SR1.0.

    2.  The updates to this section were primarily table formatting.  I don't believe there were any technical content changes in this section compared with the previous datasheet revision.

    Regards,

    Melissa

  • 0 in reply to melissaw
    Intellectual 655 points

    Hi Melissa

    Thank you for your reply.

    However, I have following concerns:

    melissaw said:

    1.  The voltage supply change will be reflected in future silicon revisions.  We will be publishing an errata advisory for AM65x SR1.0 highlighting that the LVCMOS IOs associated with device pins MMC0_SDCD (A23) and MMC0_SDWP (B23) receive power from VDDSHV6 and device pins MMC1_SDCD (B24) and MMC1_SDWP (C24) receive power from VDDSHV7 rather than VDDS_OSC1 on AM65x SR1.0.

    In revision F datasheet, the voltage supply for MMC0_SDCD (A23) and MMC0_SDWP (B23) were powered from VDDSH6. However in the updated datasheet, it is changed to VOSC1. Attached image for details. Could you please clarify if VDDSH6 is the correct power supply associated it these balls.

    REVF _Datasheet

    REVH _Datasheet

    Regards,

    Sushruta

  • 0 in reply to melissaw
    Intellectual 655 points

    Hi Melissa

    Thank you for your reply.

    However, I have following concerns:

    melissaw said:

    1.  The voltage supply change will be reflected in future silicon revisions.  We will be publishing an errata advisory for AM65x SR1.0 highlighting that the LVCMOS IOs associated with device pins MMC0_SDCD (A23) and MMC0_SDWP (B23) receive power from VDDSHV6 and device pins MMC1_SDCD (B24) and MMC1_SDWP (C24) receive power from VDDSHV7 rather than VDDS_OSC1 on AM65x SR1.0.

    In revision F datasheet, the voltage supply for MMC0_SDCD (A23) and MMC0_SDWP (B23) were powered from VDDSH6. However in the updated datasheet, it is changed to VOSC1. Attached image for details. Could you please clarify if VDDSH6 is the correct power supply associated it these balls.

    REVF _Datasheet

    REVH _Datasheet

    melissaw said:

    Regards,

    Sushruta

  • 0 in reply to Sushruta Shetty
    TI__Genius 16020 points

    Hi Sushruta,

    Yes, VDDSHV6 is the correct power supply for AM65x SR1.0.  

    Regards,

    Melissa