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DP83TD510E: Questions on data sheet

Frederik Baars
Intellectual 2115 points
Part Number: DP83TD510E
Other Parts Discussed in Thread: DP83TD510L

Hi, a customer has questions on the data sheet DP83TD510L. On page 23 the RMII Low Power 5-MHz Mode is described. There it says that a 5 MHz clock signal is generated. On the block diagram 50 MHz are output at pin 1 (RX_D3). 

Pin 1 is according to the data sheet DVDD?
RX_D3 is a Receive Data Signal?
How is the RMII Low Power 5-MHz Mode configured? (Automatically when RMII Master Mode is selected?)
Is there a more detailed description for the RMII Low Power 5-MHz Mode.

Thanks

Fred

  • 0
    TI__Mastermind 26320 points

    Hi Fred,

    DP83TD510 supports two RMII Mode:

    a. Standard RMII Master 50 MHz Clock out

    b. Low Power RMII Master with 5 MHz Clock out.

    By default 50 MHz clock is ouput. 5 MHz clock out can be configured using the register 0x017, bit 6. 

    The current datasheet has this section missing, I am working to get this fix.

    For Clock out refer to Pin Function table, 50 MHz/5 Mhz will be available on pin 19.

    Regards,
    Geet