A customer is trying to trouble shoot is board and is looking for easiest way to output color bar test pattern. Does anyone have register settings to do this?
Try the colour bar generation bit in MR17.
If they are having difficulty getting the part to output a colour bar test pattern, ensure they have communication with the part then check their design carefully against our recommended circuit for things like Rset and loop filter components.
I have the same problem. Setting this bit did not change anything. I can not get anything out of ADV7179. I use the subcarrier frequency register set provided in the datasheet for PAL. I use CVBS on DAC B.
Here is the procedure I use: Power> toggle reset pin>transfer register datas via I2C by microBlaze CPU> toggle TR07 bit by sending TR0 data via I2C 2 times(first TR07=1, the second TR07=0). and I get nothing on the screen. Please provide a extact register set for colorbar test and extact timing for reset times. There is no problem with hardware since it is provided by xilinx. Here are the output waveforms of the DAC B on osciloscope:
Follow up in your other thread: http://ez.analog.com/message/28847#28847
Retrieving data ...