DS90UB929-Q1EVM: HDMI input to display on the LCD

Andy Lu

Part Number: DS90UB929-Q1EVM
Other Parts Discussed in Thread: ALP

Our environment as above pic, I want to show my pc screen on the LCD.

The LCD is 1920*360, and we fail to show pc screen on LCD.

I can show color bar on LCD by use pattern generator on 929EVM.

Above pic is the setting in ALP HDMI page.

The active video show 1280*720, it's not fix to our LCD, any setting need to change?

Or there are any register need to set?

Is there any document about HDMI input operation?

thanks

Derek

3 年多前

0 Kailyn Chen 3 年多前

TI__Guru**** 295050 points

Hello, what the Information Lab appears the detected input HDMI information, that can't change.

You could change the LCD resolution, doesn't it ?

In addition, if you want to use the Pattern Generator tab in ALP, it can change the resolution like this:

0 Andy Lu 3 年多前回复 Kailyn Chen

Is the bottom-left corner is information Lab? It's show ALP Framework - Hardware Connected.

Our product LCD resolution is 1920*360, couldn't change.

1. I success to use pattern Generator and change the resolution on 929EVM pattern Generator tab. I can show color on LCD.

2. I fail to use PC HDMI input on 929EVM and show the PC screen on LCD.

My question is any setting need to modify when use HDMI input?

Derek

0 Andy Lu 3 年多前回复 Andy Lu

this is the resolution show on our PC when HDMI connect to 929EVM

0 Andy Lu 3 年多前回复 Andy Lu

this is our register in 929EVM

全屏 929_HDMI_register_1104.txt 下载

0x0,0x18
0x1,0x0
0x2,0x0
0x3,0xda
0x4,0x80
0x5,0x0
0x6,0x58
0x7,0x5a
0x8,0x5a
0x9,0x0
0xa,0x40
0xb,0x0
0xc,0x7
0xd,0x10
0xe,0x0
0xf,0x0
0x10,0x0
0x11,0x0
0x12,0x0
0x13,0x88
0x14,0x0
0x15,0x1
0x16,0xfe
0x17,0x1e
0x18,0x7f
0x19,0x7f
0x1a,0x1
0x1b,0x0
0x1c,0x0
0x1d,0x0
0x1e,0x1
0x1f,0xf5
0x20,0x3
0x21,0x0
0x22,0x25
0x23,0x0
0x24,0x0
0x25,0x0
0x26,0x0
0x27,0x0
0x28,0x1
0x29,0x20
0x2a,0x20
0x2b,0xf8
0x2c,0x0
0x2d,0x0
0x2e,0xa5
0x2f,0x5a
0x30,0x0
0x31,0x0
0x32,0x0
0x33,0x0
0x34,0x0
0x35,0x0
0x36,0x0
0x37,0x0
0x38,0x0
0x39,0x0
0x3a,0x0
0x3b,0x0
0x3c,0x0
0x3d,0x0
0x3e,0x0
0x3f,0x0
0x40,0x14
0x41,0x4e
0x42,0x0
0x43,0x0
0x44,0x80
0x45,0x0
0x46,0x0
0x47,0x0
0x48,0xd
0x49,0xa0
0x4a,0x0
0x4b,0x1
0x4c,0x0
0x4d,0x0
0x4e,0x1
0x4f,0x0
0x50,0x97
0x51,0xa1
0x52,0x1e
0x53,0x0
0x54,0x0
0x55,0xc
0x56,0x0
0x57,0x0
0x58,0x0
0x59,0x0
0x5a,0xdd
0x5b,0x20
0x5c,0x2
0x5d,0x6
0x5e,0x44
0x5f,0x4c
0x60,0x22
0x61,0x2
0x62,0x0
0x63,0x0
0x64,0x10
0x65,0x0
0x66,0xff
0x67,0x0
0x68,0x0
0x69,0x0
0x6a,0x0
0x6b,0x0
0x6c,0x0
0x6d,0x0
0x6e,0x0
0x6f,0x0
0x70,0x0
0x71,0x0
0x72,0x0
0x73,0x0
0x74,0x0
0x75,0x0
0x76,0x0
0x77,0x0
0x78,0x0
0x79,0x0
0x7a,0x0
0x7b,0x0
0x7c,0x0
0x7d,0x0
0x7e,0x0
0x7f,0x0
0x80,0x0
0x81,0x0
0x82,0x0
0x83,0x0
0x84,0x0
0x85,0x0
0x86,0x0
0x87,0x0
0x88,0x0
0x89,0x0
0x8a,0x0
0x8b,0x0
0x8c,0x0
0x8d,0x0
0x8e,0x0
0x8f,0x0
0x90,0x0
0x91,0x0
0x92,0x0
0x93,0x0
0x94,0x0
0x95,0x0
0x96,0x0
0x97,0x0
0x98,0x0
0x99,0x0
0x9a,0x0
0x9b,0x0
0x9c,0x0
0x9d,0x0
0x9e,0x0
0x9f,0x0
0xa0,0x0
0xa1,0x0
0xa2,0x0
0xa3,0x0
0xa4,0x0
0xa5,0x0
0xa6,0x0
0xa7,0x0
0xa8,0x0
0xa9,0x0
0xaa,0x0
0xab,0x0
0xac,0x0
0xad,0x0
0xae,0x0
0xaf,0x0
0xb0,0x0
0xb1,0x0
0xb2,0x0
0xb3,0x0
0xb4,0x0
0xb5,0x0
0xb6,0x0
0xb7,0x0
0xb8,0x0
0xb9,0x0
0xba,0x0
0xbb,0x0
0xbc,0x0
0xbd,0x0
0xbe,0x0
0xbf,0x0
0xc0,0x5
0xc1,0x0
0xc2,0x88
0xc3,0x0
0xc4,0x28
0xc5,0x38
0xc6,0x0
0xc7,0x0
0xc8,0xc0
0xc9,0x0
0xca,0x0
0xcb,0x0
0xcc,0x0
0xcd,0x0
0xce,0xff
0xcf,0x0
0xd0,0x10
0xd1,0x0
0xd2,0x0
0xd3,0x0
0xd4,0x0
0xd5,0x0
0xd6,0x0
0xd7,0x0
0xd8,0x0
0xd9,0x0
0xda,0x0
0xdb,0x0
0xdc,0x0
0xdd,0x0
0xde,0x0
0xdf,0x0
0xe0,0x5
0xe1,0x0
0xe2,0x88
0xe3,0x0
0xe4,0x28
0xe5,0x38
0xe6,0x0
0xe7,0x0
0xe8,0x0
0xe9,0x0
0xea,0x0
0xeb,0x0
0xec,0x0
0xed,0x0
0xee,0x0
0xef,0x0
0xf0,0x5f
0xf1,0x55
0xf2,0x42
0xf3,0x39
0xf4,0x32
0xf5,0x39
0xf6,0x0
0xf7,0x0
0xf8,0x0
0xf9,0x0
0xfa,0x0
0xfb,0x0
0xfc,0x0
0xfd,0x0
0xfe,0x0
0xff,0x0

0 Kailyn Chen 3 年多前回复 Andy Lu

TI__Guru**** 295050 points

Hello, there is no idea to change input HDMI resolution on DS90UB929 side.

For example, PC connected the UB929, if we want to change the input resolution, we should change the PC resolution as the above image listed. There is no related configuration of UB929 to change the input resolution.

0 Andy Lu 3 年多前回复 Kailyn Chen

any other register need to set?

for example, EDID setting?

0 Kailyn Chen 3 年多前回复 Andy Lu

TI__Guru**** 295050 points

If you want to write assigned EDID to internal SRAM, you can use both EDID_SEL & REM_EDID_LOAD in mode_sel0/1 ( can use either strap or register setting) to choose the EDID from internal SDRAM, in this way, your HDMI source can read this assigned EDID through DDC. Detailed solution as below:

The process for reading EDID SRAM is as follows:

1. Write to APB_ADR0 to set the 8-bit register address.

2. Set the APB_READ bit in the APB_CTL register. This will initiate the APB Interface read.

The APB_ENABLE bit must also be set during the APB_CTL register write, while the APB_SELECT bits must be set to 01. If desired, the APB_AUTO_INC bit may be set to enable the auto-increment function.

3. Read the APB_DATA0 registers.

4. If APB_AUTO_INC was set, the next register location may be read by repeating steps 2 and 3, otherwise repeat steps 1-3 to read another register location.

The process for writing the EDID SRAM is as follows:

1. Set APB_ENABLE in the APB_CTL register. This bit should remain set through remainder of procedure. The APB_SELECT bits should be set to 01. If desired, the APB_AUTO_INC bit may be set to enable the auto-increment function.

2. Write to APB_ADR0 to set the 8-bit register address.

3. Write the 8-bit data to the APB_DATA0 register. The APB Interface write will occur once APB_DATA0 has been written.

4. If APB_AUTO_INC is set, the next register location may be written by repeating step 2, otherwise repeat steps 1 and 2 to write another register location.

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DS90UB929-Q1EVM: HDMI input to display on the LCD