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TMS320C6678: the lowest operating frequency of C6678

Nancy Wang
Expert 8210 points

Part Number: TMS320C6678

Can the C6678 operate at 400Mhz?And what's the lowest operating frequency?Are there any restrictions?

  • 0
    TI__Guru 65405 points
    Hi Nancy,

    The minimum core clock frequency of TMS320C6678 is 800MHz. For more details refer to following threads:
    e2e.ti.com/.../335191
    e2e.ti.com/.../456221
    and TMS320C6678 datasheet at:
    www.ti.com/.../tms320c6678.pdf

    BR
    Tsvetolin Shulev
  • 0
    TI__Guru** 116830 points
    Nancy,

    Please understand that there is no minimum operating frequency for these devices. what Cvetolin has mentioned is the minimum speed grade variant which is different. Let me explain. Speed grade variant indicates the maximum frequency at which the sample can operate at.

    while operating frequency can be any value < max speed grade. When the PLL in the device are in bypass state the device cores will run at frequency of the input clock which can be as low as 50 MHz. infact in I2C and SPI boot mode, these devices boot the entire device and application with PLL in bypass, so these boot modes are really slow.

    Regards,
    Rahul