Query regarding DDC (I2C) behaviour of TMDS181 device

Simon Robbins

Other Parts Discussed in Thread: TMDS181, TVP5150

I am using the TI TMDS181 chip as an equaliser for incoming HDMI signals. I have an issue with the response to unimplemented DDC (I2C) devices when using this chip. What is the expected behaviour of the TI TMDS181 chip when a DDC transaction received on the DDC SRC bus (SDA_SRC, SCL_SRC) is then NAK'd by the sink device on the DDC SNK bus (SDA_SNK, SCL_SNK)? Is this the correct form for support with the TMDS181 HDMI-to-TMDS device?

over 9 years ago

0 Steve Clynes over 9 years ago

TI__Mastermind 43875 points

Unfortunately this forum is only for the TVP5150 video converter so I cannot help. Sorry.

BR,

Steve

0 Simon Robbins over 9 years ago in reply to Steve Clynes

Prodigy 90 points

Since this was only the (non-legacy) video-converters forum I assumed it must be the right place. Please can you point me at the correct forum?

0 Steve Clynes over 9 years ago in reply to Simon Robbins

TI__Mastermind 43875 points

The TMDS181 is a high speed serial device and not a video converter. Unfortunately I don't support the high speed serial devices to I can't help too much.

I would try the high speed serial forums first. They may be able to better assist in finding the correct forum.

e2e.ti.com/.../

BR,
Steve

0 Simon Robbins over 9 years ago in reply to Steve Clynes

Prodigy 90 points

Thanks, I'll try posting there.

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Query regarding DDC (I2C) behaviour of TMDS181 device