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AM6412: How to deal with the reserved pin(RSVD)?

Part Number: AM6412
Other Parts Discussed in Thread: SK-AM64B

Hi team,

Do you have any recommendation on the RSVD pins in Am64?

BR

Sirui

  • Hello Sirul,

    Thank you for the query.

    Please refer below summary table of the reserved pins.

    The pins are recommended to be names as RSVD pins in the schematics symbol.

    These pins have to be left unconnected (test points are also not recommended)

    These pins have internal function, and it is recommended to follow the guidelines to not connect any trace to these pins.

    Regards,

    Sreenivasa

  • Hi Sreenivasa,

    On our SK-AM64B schematic, those RSVD pins are conncected to TP. If connected to TP, is there any consequence will affect the device running? Is there any workaround such as pull to ground could avoid?

    BR

    Sirui

  • Hello Sirul,

    Thank you for the inputs.

    Please note that the EVMs are an evaluation platform that could be used as reference but cannot be considered as a reference design.

    Along with the EVM customer need to reviw the data sheet and the Errata for any updates that may be required.

    The Pin connectivity table in the datasheet is one such example.

    If connected to TP, is there any consequence will affect the device running? Is there any workaround such as pull to ground could avoid?

    These RSVD pins have internal functions. The recommendation is to leave these pins unconnected. There is no workaround and these recommendations are required to be followed.

    The effect of connection TP is not defined and the bset design approach is to leave unconnected.

    Regards,

    Sreenivasa

  • Hello Sirul,

    Adding additional inputs for clarity.

    Note that the EVMs are actually created for performance evaluation before datasheets were available. Some of the reserved pins may have had test functions and the TPs might have been used for some internal testing.

    Please follow the datasheet.

    regards,

    Sreenivasa

  • Hi Sreenivasa,

    Got it, thanks for your explaination!

    BR

    Sirui

  • Hello Sirul, 

    Thank you. The below additional notes could help in understanding the RSVD pin connectivity requirements.

    The reserved pins are for TI use only. They are not traditional IO pins and there are no plans to disclose their function. The customer needs to follow the datasheet recommendations, where it says to leave these pins unconnected. Leave unconnected means do not connect any PCB signal trace to these pins.

    There is no action the customer can take for these pins other than do not connect any PCB trace.

    Regards,

    Sreenivasa