ADV8005：How to use

Hi,

  ADV8005 has "Dual HDMI transmitters enabling with splitter capability".

  Please find below comments,

A) HDMI signal 2160p30fps (297MHz) input is split into two and HDMI output 4K30fps (297MHz) /

       Yes, ADV8005 can support TMDS clock upto 297Mhz. so we can support 2160p30fps in splitter mode.

B) Similarly, split the 1080p60Hz (148.5MHz) input into two and HDMI output 1080p60Hz (148.5MHz).

       Yes, We can.

C) Convert one of the two HDMI outputs in configuration B to a DVI signal.

      Yes, for that we need to configure below register for DVI mode in Tx1 and Tx2 main map.

NOTE:  ADV8005 offers video de-interlacing and upscaling/downscaling.The ADV8005 can receive up to eight channels of I2S, S/PDIF,direct stream digital (DSD), and high bit rate (HBR) audio passed from either the serial video Rx or from the externally available audio input pins.

Thanks,

Poornima

Hi Poornima,

Thanks for your answer.
It is very clear.

Am I correct in understanding that if I use only these functions, DDR should be unimplemented?
( because we do not use VSP or OSD.)

thanks.

Maru

Hi,

 External DDR2 memory is required only for motion adaptive de-interlacing, Scaling, Frame Rate  Conversion (FRC), and OSD bitmap overlay (Access to an external DDR2 memory can be required for the PVSP and SVSP to operate correctly). If you are not using these feature then you can drop off DDR.
Depending on the feature required, the appropriate memory device can be used.

Thanks,

Poornima

Hi Poornima,

Thanks for your answer.I will try as you have taught me.

thanks.

Maru