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(ADV7511W)I have some question about CEC line and the schematic.

Hi !

I have some questions about CEC line.

1)

Is there any specification for the CEC line frequency?

If there any specification, can you teach where it is written?

2)

If our customer use ADV7511W with CEC line, 

do the customer need to adjust CEC line frequency between HDMI-RX & HDMI-TX?

3)

If it is difficult to answer No.1~2 , 

can you tell me the ADV7511W-Eval board can pass the HDMI compliance test with CEC line?

We want to know this because it is the first experience for us and also for the customer to use CEC line.

So if you can give some advice about this, it will help us very much.

4)

At ADV7511W's Hardware Users Guide P43, you said, 

"For a complete set of reference schematics and PCB layout example, contact ATV_VideoTX_apps@analog.com."

Is this EVAL board schematics and PCB layout?

Or is it different?

Also is there any terms to get this documents?

Best regards.

Kawa

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  • 4) this board was designed for CEC certification however we have not run it thorough any official tests.

    5) CEC is similar to I2C.  The 'CEC_CLK' for the ADV7511 is really the crystal input.  No place to apply a CEC_CLK.  CEC timing would be based on the crystal.   

    5,6&7) The CEC_CLOCK is related to the bit timing and where the bit samples are taken.  See CEC 5.2 specification.

    For the ADV7511 the CEC_CLK is 760kHz. 

    Which exact Programming Guide did you pull section 4.8.7 from so I can go look at it.

    CECAppNote.pdf
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  • 4) this board was designed for CEC certification however we have not run it thorough any official tests.

    5) CEC is similar to I2C.  The 'CEC_CLK' for the ADV7511 is really the crystal input.  No place to apply a CEC_CLK.  CEC timing would be based on the crystal.   

    5,6&7) The CEC_CLOCK is related to the bit timing and where the bit samples are taken.  See CEC 5.2 specification.

    For the ADV7511 the CEC_CLK is 760kHz. 

    Which exact Programming Guide did you pull section 4.8.7 from so I can go look at it.

    CECAppNote.pdf
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