TPD12S521: schematic review

Shu-Cheng LIN

Guru 11785 points

Part Number: TPD12S521

Hi Sirs,

Could you help review our schematic on TPD12S521?

2604.2.output-new.pdf

Any suggestion are welcome.

Thanks!!

over 7 years ago

0 Thomas Amlee over 7 years ago

TI__Genius 9230 points

Hi Shu-Cheng,

I will look at your schematic later today. Thank you for your question.

- Tom

0 Shu-Cheng LIN over 7 years ago in reply to Thomas Amlee

Guru 11785 points

Hi Sirs,
Sorry for pushed, any update on this?
Thanks!!

0 Thomas Amlee over 7 years ago in reply to Shu-Cheng LIN

TI__Genius 9230 points

Hi Shu-Cheng,

Here is my feedback:

- Pull up the DCLK_OUT, DDAT_OUT to Vlv with appropriate resistor (1.7k ohms used in example)

- CEC_OUT should be connected to logic supply with a resistor & schottcky diode in series (Vlv or 3v3?)

- The 47kohm pull ups should be on CE_REMOTE_IN, DDC_DAT_IN, DDC_CLK_IN input side (switch/transmitter facing). Not on the output (port facing)

Keep in mind that the control signals are buffered, so they are directional. The pull ups on the input & output will be different. Please see the block diagram found on pg 9 of the TPD12S521 datasheet.

Thanks,

Tom

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TPD12S521: schematic review