Can HD-DAC of DM8168 support VESA standard for DSUB-15

Hi,

HD-DAC supports VESA format for DSUB-15. As for the DDC, applicaiton should hook the righ i2c bus to the DSBU-15  to read the EDID information from the TV or monitor.

Regards,

yihe

So , any I2C port on the DM8168 also can be treated as DDC funciton,  is't it ?

if yes, once the I2C be treated as DDC funciton, can we still use this I2C port for other device ? 

 in other word, we connect many devices on the same I2C port, such as EDID and othr device controlled by I2C

It is not recommended to use the same I2C channels for DDC since if there is an external fault which causes the I2C bus to fail then it will affect your entire system.

If you use a different I2C bus then any external failure will not kill your system, but you will still be able to use some default video resolution settings.

BR,

Steve

Hi

has the driver been ready on SDK to supoort DDC function?

Hi,

SDK driver is not supporting DDC. I2C bus is not connected to the DDC pins of the VGA connector on our EVM.

Regards,

Hardik Shah

Hi:

Does TI has any plan to add this feature in SDK ?

We really need this feature.

Besids, I saw that DM8168 has the dedicated DDC pin for HDMI.

So,  you mean that the DDC funciton for HDMI still is not ready, is it ?

Hi,

DDC can be implemented using a generic I2C master interface on SoC, or some of the encdoers have built-in DDC support. HDMI is having build-in DDC support and this supported. So DDC is supported for HDMI. But for HD-Dac you need to use genereic I2C master of DM816x. So this is not supported for HD-DAC.

Regards,

Hardik Shah

Hardik,

I thought we already had generic DDC reading and DDC parsing routines?

BR,

Steve