HDMI signals

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HDMI signals

458 Views
pscz
Contributor II

Hi all,

the i.MX6's HDMI controller supports two signals for the CEC interface.

CEC interface is based on the "one-wire" standard and the IO pin (if drived by the controller and not by a GPIO) is "K2", (HDMI_TXDDC_CEC).

i.MX6 has another signal related to the CEC interface. It is placed on the "W4" and "H19" balls (is muxed). The name of the signal is: HDMI_TX_CEC_LINE

Can anyone expplain its function?

Freescale "MCIMX6Q-SMART DEVICE BOARD" ev board doesn't even connect it.

Thank you all!

Alessandro

1 Reply

33 Views
igorpadykov
NXP TechSupport
NXP TechSupport

Hi allessandro

HDMI_TXDDC_CEC (K2) is dedicated HDMI ground signal, so it is just

grounded on i.MX6 side. More details you can read in HDMI specification.

Best regards

chip

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