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(ADV7611)I want know what is "PACKET_ERROR_RAW".

Question asked by donadona999s on Jul 1, 2015
Latest reply on Jul 12, 2015 by donadona999s

Hi!

 

I have a question about "PACKET_ERROR_RAW".

One of the system is using ADV7611 as sink-device.

And we are trying to make the FAIL-SAFE function.

→In the system's case ,when the system has the problem(kind of noise problem),

  source device output the AV-MUTE.

  →So, the ADV7611 outputs black picture.

We are trying to reset the system when we detect the problem.

So, we are thinking to watch "PACKET_ERROR_RAW".

→Also we are also trying to solve the system problem too.

And I have some questions.

 

1)

In my understanding ,

ADV7611 outputs "PACKET_ERROR_RAW" = "H" when the ADV7611 continue losing the Infoframe

(Vendor Specific,Auxiliary Video Information,Source Product Description Audio,MPEG Source).

I mean Infoframe is all HDMI date except CEC ,

Is it correct?

I want to know this because I couldn't understand what the "PACKET" means.

 

2)

If the video signal is everything fine ,  "PACKET_ERROR_RAW" will always be "L".

Is it correct?

I want to know this because I want to make a judgement to use

"PACKET_ERROR_RAW" to check the system problem.

If it's not correct , could you tell the case when the "PACKET_ERROR_RAW" will be "H".

 

3)

We think I should think about this question...but please let me ask a question.

We are trying to check "PACKET_ERROR_RAW" , several 500ms.

And read this register and clear this register.

And when the system detect it by 20 times of repetition ,

the system will detect problem and restart the system.

Can you give me any advise about this?

How do you think abou this FAIL-SAFE function.

Do you have any concerns?

 

4)

Can you give me any advise about the case when the "PACKET_ERROR_RAW" repeats "H"?

→I mean detect "H" and clear this register and detect "H" again and repeat kind of this.

I think the possiblity is

---------------------------------------------------------

(SOURCE)

Clock(RXA C) error

Source When I detect it by 20 times of repetition. error

Equalizer error

HDCP ENGIN error(Coding failure)

Packet processor error

(SINK)

Equalizer error

HDCP ENGIN error(Decoding failure)

Packet processor error

(Other reasons)

Noise

---------------------------------------------------------

I want to know these information to solve the system problem

so I wish you to give me some advise.

 

Best regards.

Kawa

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