Color inversion (ADV7842 & ADV7513)

Hy Guenter

input resolution is : 1280x1024@60

ADV7842 script is

DEVICE_ADDR_ADV7842_IO_MAP, 0x00, 0x05,   // VID_STD=000101b for SXGA60

DEVICE_ADDR_ADV7842_IO_MAP, 0x01, 0x82,   // Prim_Mode to graphics input

DEVICE_ADDR_ADV7842_IO_MAP, 0x02, 0xF6,   // Auto input color space, Limited Range RGB Output

DEVICE_ADDR_ADV7842_IO_MAP, 0x03, 0x40,   // 24 bit SDR 444

DEVICE_ADDR_ADV7842_IO_MAP, 0x05, 0x28,   // Disable AV Codes

DEVICE_ADDR_ADV7842_IO_MAP, 0x0C, 0x40,   // Power up Part

DEVICE_ADDR_ADV7842_IO_MAP, 0x15, 0xB0,   // Disable Tristate of Pins except for Audio pins

DEVICE_ADDR_ADV7842_CP_MAP, 0x73, 0xEA,   // Set manual gain of 0x2A8

DEVICE_ADDR_ADV7842_CP_MAP, 0x74, 0x8A,   // Set manual gain of 0x2A8

DEVICE_ADDR_ADV7842_CP_MAP, 0x75, 0xA2,   // Set manual gain of 0x2A8

DEVICE_ADDR_ADV7842_CP_MAP, 0x76, 0xA8,   // Set manual gain of 0x2A8

DEVICE_ADDR_ADV7842_CP_MAP, 0x85, 0x0B,   // Disable Autodetectmode for Sync_Source for CH1. Force CH1 to use HS&VS

DEVICE_ADDR_ADV7842_CP_MAP, 0xC3, 0x39,   // ADI recommended write

DEVICE_ADDR_ADV7842_AFE_DPLL_MAP, 0x0C, 0x1F,   // ADI recommended write

DEVICE_ADDR_ADV7842_AFE_DPLL_MAP, 0x12, 0x63,   // ADI recommended write

DEVICE_ADDR_ADV7842_AFE_DPLL_MAP, 0x00, 0x80,   // ADC power Up

DEVICE_ADDR_ADV7842_AFE_DPLL_MAP, 0x02, 0x00,   // Ain_Sel to 000. (Ain 1,2,3)

DEVICE_ADDR_ADV7842_AFE_DPLL_MAP, 0xC8, 0x00   // DLL_PHASE - 000000b

ADV7513 script is:

0x98, 0x03,                                      // ADI recommended write*

0x9A, 0xE0,                                      // ADI recommended write*

0x9C, 0x30,                                      // ADI recommended write*

0x9D, 0x61,                                      // ADI recommended write

0xA2, 0xA4,                                      // ADI recommended write*

0xA3, 0xA4,                                      // ADI Recommended Write*

0xE0, 0xD0,                                      // ADI Recommended Write*

0x01, 0x00,                                      // Set 'N' value at 6144

0x02, 0x18,                                      // Set 'N' value at 6144

0x03, 0x00,                                      // Set 'N' value at 6144

0x15, 0x00,                                      // 24-bit, 444 RGB input

0x16, 0x00,                                      // RGB 444

0x18, 0x46,                                      // Disable CSC

0x40, 0x80,                                      // General control packet enable

0x49, 0xA8,                                      // ADI recommended write*

0x96, 0x00,                                      // HPD interrupt clear

0x56, 0x08,                                      // Set active format aspect

0xAF, 0x04,                                      // Select DVI mode

0xBA, 0xA0,                                      // Set TX Clock Delay

0xE4, 0x60,                                      // VCO_Swing_Reference_Voltage

0x45, DEVICE_ADDR_ADV7513_PACKET_MEM_MAP,        // I2C Address for PACKET MEM REG

0x43, DEVICE_ADDR_ADV7513_EDID_MAP,              // I2C Address for EDID_MAP

0xE1, DEVICE_ADDR_ADV7513_CEC_MAP,               // I2C CEC_MAP

0xF9, DEVICE_ADDR_ADV7513_FIXI2C_MAP,            // I2C Address for FIXI2C_MAP

i have try to toogle the y0y1 register in the  adv7513 (0x55[6:5]) but no change

franck

How is it inverted.

When you input a blue screen, what do you get out?

Please check IO 0x04[7:5] OP_CH_SEL.  If the output digital channels are swapped, you will get strange color conversions too.  I notice you don't seem to be writing it so it will be at the default

Hello

inverted like this

White --> Black

Black --> White

Green  --> magenta

Red --> cyan

Yellow --> blue

franck

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Solved !

The problem was the connexion between the output of the HDMI transmiter and

the switch connected behind.

i just revert the source sign of the HDMI trace and that isolve the problem.

Good to know !

Thanks for the update! Can you clarify what you did to resolve the issue?

-Matt

Hi Matt

The output HDMI trace from the ADV7513 was connected directly to the switch AD8192.

The problem was that the polarity of the differential trace was inverted.

And if the polarity is inverted the color are inverted to !

I mean for example TC0+ of ADV7513 was connected to TC0- of AD8192 

and TC0- of ADV7513 was connected to TC0+ of AD8192.

The issue was resolve thanks to the possibility of the AD8192 to reverse the polarity by

programming the internal register.

i hope that helps

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