Can't ADV7625 receive 1366x768 at Transceiver mode (non mux mode) ?

Hi,

For Non-Mux mode configurations, additional settings are required for these formats 1366x768.

It is possible to custom program the resolution that the ADV7625 should expect for free run mode 1 by programming the Free-run Line Length, Line Count Max, and Interlaced registers

Please refer section7.3.6 in adv7625_HW_manual for additional settings of custom resolution.

And also refer below thread.

  What is difference between Mux mode and Transceiver mode in ADV7625? 

Thanks,

Poornima

Mr. PoornimaSubramani 

Thank you for your reply.

I consult your opinion.

Best regard.

Hi,

Hi,

 If EVAL-ADV7625-SMZ(Transceiver mode) is input 1366x768, Monitor blink (display→Black→display )  every 3～5 minutes.

    In non-mux mode, when the ADV7625 received AVMUTE in GC packet, it transmitted AVMUTE in GC packet. It also blanked the video.

    Please refer section7.3.8 Manual parameter mode in ADV7625_HW_Manual to set the corresponding resolution.

   Please Cross check with this script file##19 Additional Formats Configuration Writes## to monitor the blink and also try this format with freerun mode.

   Then within that there are scripts based on pixel clock frequency and mode configuration.

   The requirement for using those settings is based on the pixel clock frequency of the format.These would be for non-standard or graphics formats that fall between the standard timing we support.

Thanks,

Poornima

Hi Poornima.

I also have same question?

I confirmed the section7.3.8 Manual parameter mode in ADV7625_HW_Manual. Accordint to it, the Manual parameter mode is only available for the pixel port input. Can't we setting thr resolution(1366 x 768) in case of the HDMI Rx input?

Best regards,

Akira

Hi,

  Yes,we can do customization at Source/Generator side ,but it will support till 300MHz(3G) maximum TMDS clock frequency.

Thanks,

Poornima

Hi Poornima.

Hi PoornimaSubramani

I would like to input ADV7625 TMDS (not pixel port input).

I understand that Manual parameter mode is able to use for only pixel port input(= TMDS can't use).

Is my opinion right?

If I input ADV7625 TMDS, Can I adjust free run mode(7.3.6 programming the Free-run Line Length, Line Count Max, and Interlaced registers)?

If can, what should I do to adjust?

Please tell me the way to adjust or give me sample?

Best regards.

Hi,

 I understand that Manual parameter mode is able to use for only pixel port input(= TMDS can't use).

 Is my opinion right?

   I beleive yes.

If I input ADV7625 TMDS, Can I adjust free run mode(7.3.6 programming the Free-run Line Length, Line Count Max, and Interlaced registers)?

  Yes,for standard input resolution,please refer section 7.2.3 in ADV7625_HW manual and also for non-standard resolution we can change through the pixel port only.

  The hdmi_frun_mode control can also be used with the pixel port (pixel) input, Please refer 7.3.6.2 section in ADV7625_HW_manual.

Thanks,

Poornima

Hello Poornima,

The customer changed a setting from 0x8C(XGA) to 0x85(SXGA) of "cp_a_vid_std" for 1366 x 768. Then ADV7625 can receive 1366 x 768 at Transceiver mode (non mux mode) . However we are nor sure the reason. Can you expalne the reason why ADV7625 can receive 1366 x 768 by SXGA setting?

And is  "cp_a_vid_std command available not only for the free run but also for a normal picture signal? 

Best regards,

Akira