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DS100MB203: Does DS100MB203 support SATA hard disk

user6354551
Prodigy 230 points
Part Number: DS100MB203


Hi 

DS100MB203 is used to connect SATA hard disk, the hard disk cannot be recognized.Does the chip support SATA hard disk?If not, do you have a pin compatible model?

  • 0
    TI__Mastermind 43795 points

    The DS100MB203 can support SATA signaling.  Since the drive is not being detected, it is likely something to do with OOB signaling.

    How are you controlling the DS100MB203?

    Do you have a schematic?

     Regards,

    Lee

  • 0 in reply to Lee Sledjeski
    Prodigy 230 points

    Hi Lee

    Thank you for your reply.Please refer to the schematic diagram and waveform, and put forward Suggestions for modification.Blue is the input, yellow is the output, and 200M is the test input.Access SATA hard disk, unable to recognize.

  • 0 in reply to user6354551
    TI__Mastermind 43795 points

    Hi,

    The pull-up and pull-down resistor values for the DS100MB203 should be 1K ohms.  There are internal resistors on the MB203 which require the correct external values to function properly.

    Pull-down Resistors to change: R54, R56, R57, R65, R66, R67, R75, R76, R77, R78

    The pull-ups for this connections should also be 1K if they are populated.

    The total value R58+R59 should also be 1K Ohm.  Recommend R59 = 1K and R58 = 0

    I have never seen 200 MHz used to test for a SATA drive.  I do not see any issues with the input and output waveforms.  The MB203 will not significantly change the 200 MHz waveform.  The frequency is relatively low for the CTLE and DEM should be 0 dB 

    Regards,

    Lee