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TFP401: How to use the TFP401 to receive 2560*1600 resolution DVI interface image signal?

xuyu xie
Prodigy 180 points
Part Number: TFP401

Hi：

 We are planning to use the TFP401 chip to receive a DVI signal with a resolution of 2560*1600, but consulting the TFP401's chip datasheet found that only 1600*1200 resolution DVi signals are supported. So we think that we can use two TFP401s to connect to the DVI interface to distinguish between the receiving parity pixels, and then splicing into a complete image using the FPGA; now we find that the DVI channel C TMDS clock pin is a pair of differential pairs, and I want to use A pair of channel C clocks are connected to RxC+ and RxC- on two TFP401s. Is this design reasonable and feasible? How to use the TFP401 to receive 2560*1600 resolution DVI interface image signal?

Regards

7077.TFP401_english.doc

             

  • 0
    TI__Mastermind 35130 points

    Hi Xuyu,

    We will look into this and get back to you as soon as able.

    Regards,
    I.K.

  • 0 in reply to Ikechukwu Anyiam
    TI__Mastermind 35130 points

    Hi Xuyu,

    I believe you will need a dual-link DVI receiver, which the TFP401 is not.  You could theoretically use two TFP401s but the problem is there is only one clock, and you would need to split the clock to both TFP401’s which would require some special handling with additional components and careful layout to guarantee both devices would be in sync.

    It may be possible to do this but we wouldn’t be able to provide any support for this since it’s not what the device was designed for.

    We have done an app note at one point (see attached), but we have never validated it in a real application or seen anyone actually implement this yet.

    Regards,

    I.K.

    Dual_link_apnote_20031208.pdf