HDMI Tx - HD Multimedia Interface transmitter

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HDMI Tx - HD Multimedia Interface transmitter

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_at
Contributor III

Hi All,

I want to know wht's going on inside the i.MX 6Q when i connect HDMI output to HDTV's HDMI input ?

From basics of HDMI initialization sequence:

H/W should follow this steps:

1-> HPD detection.

2-> EDID read

3-> send 30 unencrypted Video frames

4-> start HDCP authentication.

Is it the right sequence i.MX 6Q HDMI Tx follow ?

What happen in case EDID is not valid ?

How HDMI Tx send 30 video frames ?

How HDCP authentication initiated by i.MX 6Q ?

Reason to ask, as i stuck on step-3 above.

When i connect HDMI cable on i.MX 6Q , i receive Hot Plug Detection event & my SABRE-SD board's Android source code read EDID from I2CM bank.

It means, i.MX 6Q HDMI Tx had read EDID successfully but i don't know wht next step HDMI Tx shuold OR will be follow ?


Can anybody answer this question ?

-Ankit.

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daiane_angolini
NXP Employee
NXP Employee

I don´t have the details.

Please, enter a SR regarding this. The information is under some licensing and cannot be public.

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430 Views
_at
Contributor III

Hi Daiane,

Thank you for your information.

-Ankit.

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daiane_angolini
NXP Employee
NXP Employee

As I know the default imx6 board does not support HDCP (at least without hardware rework)

Are you using a custom board?

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_at
Contributor III


Hi Daiane,

Thank you for your reply.

I have MCIMX6Q -SDB board. Other tag on board are: "SCH-27516 Rev C1" & "700-27516 Rev A".

Is hardware rework required for this board? If yes, can you please tell us how to do that ?

-Ankit.

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431 Views
daiane_angolini
NXP Employee
NXP Employee

I don´t have the details.

Please, enter a SR regarding this. The information is under some licensing and cannot be public.

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