i.MX ProcessorsのトピックRe: HDMI Tx - HD Multimedia Interface transmitter

HDMI Tx - HD Multimedia Interface transmitter

_at — Mon, 18 Mar 2013 11:44:28 GMT

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.

daiane_angolini — Mon, 08 Apr 2013 18:12:31 GMT

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

Are you using a custom board?

_at — Tue, 09 Apr 2013 04:02:47 GMT

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.

daiane_angolini — Tue, 09 Apr 2013 20:24:07 GMT

I don´t have the details.

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

_at — Wed, 10 Apr 2013 12:40:37 GMT

Hi Daiane,

Thank you for your information.

-Ankit.