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66AK2G02: PCIE clock should be connected even when PCIE is not used?

Sung-IL
Mastermind 28735 points
Part Number: 66AK2G02
Other Parts Discussed in Thread: CDCM6208

Dear Team,

My customer is looking for the simple clock design as EVM has complicated one.

Could you please provide block diagrams of simplest clock for 66AK2G02?

Target application is audio soundbar, and they don' need to use PCIe.

Could you please check if 24Mhz OSC can be used for 24Mhz system clock instead of CDCM6208 in EVM?

Thanks and Best Regards,

SI.

  • 0
    TI__Guru**** 161600 points
    Hi SI,

    My customer is looking for the simple clock design as EVM has complicated one.

    We recommend following the reference designs, in your case the 66AK2G02 EVM schematics.

    When designing a custom board the you should follow the Hardware Design Gudie for Keystone II devices (www.ti.com/.../sprabv0.pdf), the Schematic Checklist (processors.wiki.ti.com/.../Keystone_Multicore_Device_Family_Schematic_Checklist) and most important you MUST follow the Data Manual Recommendations.

    Could you please provide block diagrams of simplest clock for 66AK2G02?

    Not sure if we have such block diagram.
    Could you please check if 24Mhz OSC can be used for 24Mhz system clock instead of CDCM6208 in EVM?

    I'd recommend to stick with what is used in the reference design.

    I am also looping the HW designers to elaborate on the last two points.

    Best Regards,
    Yordan
  • 0
    TI__Mastermind 42545 points

    Hi Sung-IL,

    The K2G was designed to operate with a fairly simple clocking scheme. You can use the CLOCKTREETOOL to determine if the clock that you've selected will work for your design. If you don't want to use a crystal connection, you can connect a differential clock input to the SYSCLK_P/N input. Check the clock management chapter of the Technical Reference Manual for more information.

    Regards,

    Bill