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Original question:

DP83869HM: Configuring DP83869HM without controller

DP83869HM: Strap option for Functional mode selection

Sneha R
Prodigy 70 points
Part Number: DP83869HM

Tool/software:

Hi J,

I have made the strapping circuits as per your recommendation for DP83869HM. 

Please confirm the correctness of the below strap configuration for SGMII(or 1000Base1000Base-KX) to 1000Base-T conversion. 

Figure (a) for DP83869HM functional mode selection.

Figure (b) for DP83869HM LED configuration.

Thanks & Regards,

Sneha

  • 0
    TI__Genius 12816 points

    Hi Sneha, 

    Figure a is correct for SGMII to copper. 
    Note that to do fiber to copper media conversion mode, the strapping options are as follows:
    RX_D2 in mode 1
    RX_D1 in mode 0
    JTAG_TDO/GPIO_1 in mode 0.

    For figure b, this is correct to enable auto-negotiation at 1000/100/10M speed with auto-MDI-X feature. 
    Should you wish to use LED, the following configuration is needed in addition to the strapping configuration:

    Best,
    J