We have a development board with ADV7481. We see that once the board is powered up, even without ADV7481 driver loaded (Means no software programming done at all), it is drawing high current. Can someone please help understand the reason for this?
When we add the driver and probe ADV7481, we see that value is the default 0x33 in the "power down controls" IO register before we do anything. Do we need to explicitly power down ADV7481 to avoid the current being drawn? How to do this? Is there any other register to be written for this?
Have you configured with reference script without software driver for verifying the high current?Please let us know
Depending on the drive strength,we can able to know the level of current being employed in driving the output pads. Please refer section 2.7 in hardware manual which is available at ADV7481 Design Support Files
I beleive that is default value for power down controls,so we don't need to explicitly power down ADV7481 to avoid the current being drawn.
Thanks Poornima for the reply.
No we have not configured with reference script.
Could you please share the script and instructions how to use it?
ADV7481 Required Settings - this is refer to the reference script in design support file ADV7481 Design Support Files.
This Script can be run with AVES blue tool,there they have document about how we can getting start with aves and running the script in Aves tool which is available at Advantiv Video Evaluation Software (AVESBlue) .