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DS125MB203: EQ and DEM setting registers

Shuji Ishiwata
Mastermind 7825 points
Part Number: DS125MB203

Hi All,


I have a question about DS125MB203.

If I want to adjust the EQ or DEM in the D_IN0±→S_OUTA0± direction, should I set the CH4 (D_IN0 – S_OUTA0) register?
Similarly, if S_INA0±→D_OUT0±, is it a CH0 (NC – S_INA0) register?
There was no description of CH for S_INA0±→D_OUT0±, so I would like to know.


Best Regards,
Ishiwata

  • 0
    TI__Mastermind 27960 points
    Shuji Ishiwata said:
    If I want to adjust the EQ or DEM in the D_IN0±→S_OUTA0± direction, should I set the CH4 (D_IN0 – S_OUTA0) register?

    Yes that is correct.

    Shuji Ishiwata said:
    Similarly, if S_INA0±→D_OUT0±, is it a CH0 (NC – S_INA0) register?

    To adjust EQ on S_INA0, write to register 0x0F (CH0, NC - S_INA0). To adjust DEM on D_OUT0, write to register 0x18 (CH1, D_OUT0 - S_INB0).

    RXDET and EQ exist near the redriver inputs. To adjust these settings, choose the channel that corresponds to the correct input. VOD and DEM exist near the redriver outputs. To adjust these settings, choose the channel that corresponds to the correct output.

    Best,

    Lucas