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Tool/software:
Hello,
Is it possible to disable a video stream by choice?
Can you use power down mode to disable a present video stream?
If you can disable it, how do you recommend to do it?
Many thanks
Jorgen
Hi Jorgen,
We're looking into this and will get back to you shortly.
Thanks,
Drew
Jorgen
Refer to Table 12 in the TMDS181 datasheet, any condition that would put the output into High-Z would disable the video stream, is this what you are looking for?
Thanks
David
Hi David,
Yes it is and I think you don that via this register?
If not can you guide me to how to do it using I2C?
Thanks
Jorgen
Jorgen
Your understanding is correct, this is done through the I2C write.
Please note that when the TMDS181 is put into a power-down state, the I2C registers are cleared. This is important as the TMDS_CLOCK_RATIO_STATUS bit will be cleared. If cleared and HDMI2.0 resolutions are to be supported, the TMDS181 expects the source to write a 1 to this bit location. If this does not happen, the PLL will not be set properly and no video may be evident.
Thanks
David