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ADV7511 cann't output HDMI video problem

Question asked by Ramon.J on Dec 20, 2017
Latest reply on Dec 21, 2017 by JeyasudhaMuthuPerumal

Hello. I tried to configure ADV7511 to output HDMI 1080p@60Hz video to a video monitor which has a HDMI port,the data source is FPGA generated Color Bar. If I used the DVI mode (  reg(0xAF)[1] = 0 ), everything is fine.  but when I change DVI mode to HDMI  mode(  reg(0xAF)[1] = 1 ), the monitor detects no video signals. I changed to use other monitor, the same situation occurs.Here are my configure params:

 

reg_addr[] = {0x41,0x98,0x9a,0x9c,0x9d,0xa2,0xa3,0xe0,0xf9,0x15,0x16,0x17,0x18,0xaf,0x01,0x02,0x03,0x0b, 0x0c,0x15,0x0a,0x40,0x48,0x55,0x56};

reg_data[] = {0x10,0x03,0xe0,0x30,0x61,0xa4,0xa4,0xd0,0x00,0x01,0xb5,0x02,0x46,0x06,0x00,0x18,0x00,0x8e, 0x00,0x01,0x10,0xff,0x08,0x30,0x28};

 

for(index = 0;index<25;index++)

     reg_data[index] = reg_data[index];

 

The color bar disappears when I write 0x60 to 0xaf.  Are there more steps to do if I want to output HDMI signals?or what's the problem maybe?

 

here are some read back values after the setup.

reg 0x42 = 0xf0;
reg 0xc8 = 0x02;
reg 0x9e = 0x16;

reg 0x3e = 0x40;

reg 0x3d = 0x10;
reg 0x3c= 0x00;

 

Thanks in advance.

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