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(ADV7480)MIPI Power Up Sequence

Question asked by donadona999s on May 30, 2017
Latest reply on Jun 19, 2017 by donadona999s

Hi !

 

I have some questions about ADV7480.

 

Q1)

Power Up Sequence are written in H/W manual P210.

At No.7 it says use csitx_pwrdn.

Our customer is saying that they have to set up MIPI-RX when MIPI-TX is outputting "H".

So they want to know is this correct or not.

* csitx_pwrdn = enable    => MIPI output "H"

* csitx_pwrdn = disable   => MIPI output "L"

Is this correct?

It is not written in H/W manual.

 

Q2)

At the script 

http://www.analog.com/media/en/engineering-tools/design-tools/ADV7481ES3C-VER.3.6c.txt 

Why "44 7C 00" is required?

I think ADV7480 don't output any sync signal.

So if this resister setting is saying about output signal I think this depend on to users.

So my guess is ,

 => ADV7480 is using HDMI core which is same as ADV7611 or other HDMI device.

      ADV7480 don't output sync but sync signal is used in internal.

      So user have to set up this resister correctly to use ADV7480 correctly.

Is my guess correct?

 

Best regards
Kawa

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