Use ADV8005 to distribute 4K30p of HDMI.

Hi,

  Please ensure with below register setting for selecting both Tx1 & Tx2 port.

Also make sure whether primary and secondary VSP bypass been enabled. Please refer below snap for your reference.

The 4K60pYC420 settings for AN-1299 are listed. Is it OK if I use this ?   
       Yes you can (The scripts used for this testing been included in this application note).

       ADV8005 and ADV7625/ADV7626/ADV7627 products have been tested and verified using 4k × 2k at 60 Hz 4:2:0 formatted video. 

Note: ADV8005 Tx source termination disabled if the ADV8005 Tx TMDS clock frequency is less than or equal to 165 MHz
ADV8005 Tx source termination enabled if the ADV8005 Tx TMDS clock frequency is greater than 165 MHz
Therefore, for 4k x 2k, Tx source termination should be enabled on the ADV8005 HDMI Tx output.

Thanks,

Poornima

Dear Poornima.

Thank you for your answer.

I will try with the register you gave me.

By the way, I found out that Tx source termination should be Enable if it is above 165MHz.

By making this termination Enable, do you mean the internal register of the AD8005?
Or are you talking about the RX-side termination beyond that?

I found the description on p. 241 of UG-707, but the register is not shown.

Best regards.

Hi Caster San,

  Please find the below comment,

       By making this termination Enable, do you mean the internal register of the AD8005 ?

          Yes, Please ensure with below register are configured according to the Userguide at https://www.analog.com/media/en/technical-documentation/user-guides/ADV8005_UG-711.pdf

Tx1 Main Map:

Tx2 Main Map:

Note: 'rx_sense_pd' should  not  be  applied  during the configuration  of  the  HDMI Tx as it disables  an oscillator  required  to  complete  the  configuration of the TMDS output clock channel. It is recommended to use rx_sense_pd when the HDMI Tx has been completely configured.  

Thanks,

Poornima

Hi Caster San,

  Please find the below comment,

       By making this termination Enable, do you mean the internal register of the AD8005 ?

          Yes, Please ensure with below register are configured according to the Userguide at https://www.analog.com/media/en/technical-documentation/user-guides/ADV8005_UG-711.pdf

Tx1 Main Map:

Tx2 Main Map:

Note: 'rx_sense_pd' should  not  be  applied  during the configuration  of  the  HDMI Tx as it disables  an oscillator  required  to  complete  the  configuration of the TMDS output clock channel. It is recommended to use rx_sense_pd when the HDMI Tx has been completely configured.  

Thanks,

Poornima

Thank you so much！

I will try it.

Hi,

Please refer the below FAQ ,We created this FAQ recently to get customer details and primary check points for Custom based boards.

Also we suggested some Video parts with feature details.

Queries and Primary Suggestions for our Video Customers! - Documents - Video - EngineerZone (analog.com)

Kindly check and provide your feedback on this.

Thanks,

Poornima