DLPC7540EVM: HDMI and Test Pattern no DISPLAY

Hi Jing Miao,

      Can you try invalidating the settings in the Administrative page. Also once reset the warp data in the manual warping page by reading the output resolution and then create warp map with 2*2.

Hello Team,

 Maybe you are right! I only disable the Manual Warping in composer "Warping" page, the test pattern and HDMI source can display normal, so the EVM can work normal.

But our self-design board whitch changed the layout base on EVM design is still unable to display. the debug message tell us the source config and Apply Display are normal(as below), i also disable the Manual Warping, but dmd still display black color image. this is different to EVM.What's your suggestion?

HI JingMiao,

        Can you please share the schematic you are using. Also could you share the complete UART debug data. Did you try testing any other sources 1080p etc.

Yes, I have tried other reolution source(1080P/WXGA/XGA),but this problems remain.

I'll send you the schematic files privately,please help to double check,Thanks! 

and I will send the complete UART debug data later!

Uart DBMsg: 

Blank screen is set to TPG 
dispfmt_CalculateDisplayArea:  X, Y, Width, Height = 0, 0, 3840, 2160
dispfmt: minPan, pan, maxPan:0, 0, 0
         data = { 3840, 0, 3840 }
dispfmt: minScan, scan, maxScan:0, 0, 0
         data = { 2160, 0, 2160 }
dispfmt_CalculateCroppedArea:  X, Y, Width, Height = 0, 0, 3840, 2160
dispfmt:apply_disp: activeSource = 3, dispSrc = 0

datapath: Transition to IDLING on Vx1(ITE0)
Command 0x11 execution took 215698 us (greater than allowed 50 ms)
mbSend: mbx: 2b610   msg: 0005   tID: 2b348
mbRecv: mbx: 2b610   msg: 0005    us (greatesource: SPLASH address:  0x1053045c
source: DisplaySplash size = 3840 x 2160
Blank screen is set to splash 
dispfmt_CalculateDisplayArea:  X, Y, Width, Height = 0, 0, 3840, 2160
dispfmt: minPan, pan, maxPan:0, 0, 0
         data = { 3840, 0, 3840 }
dispfmt: minScan, scan, maxScan:0, 0, 0
         data = { 2160, 0, 2160 }
dispfmt_CalculateCroppedArea:  X, Y, Width, Height = 0, 0, 3840, 2160
dispfmt:apply_disp: activeSource = 2, dispSrc = 2

------------------- SCANNING CONNECTOR : Vx1(ITE0) ----------------
Warning: No AFE1000/HW communcation found while attempting to place stand-by (However connector table seem to have a VGA entry)
digcontrol: Decoder 5 powerStandby complete
digcontrol: ConfigureForSearch complete

datapath: Transition to SCANNING on Vx1(ITE0)
Event: Source Change Detected on channel
mbSend: mbx: 2b610   msg: 0004   tID: 28798
mbRecv: mbx: 2b610   msg: 0004   data:0000
Event: DSM Locked on channel
mbSend: mbx: 2b610   msg: 0003   tID: 28798
mbRecv: mbx: 2b610   msg: 0003   data:0000
digcontrol: FillSourceConfig - srcConfig:
        TotalArea.PixelsPerLine  - 4400,
        TotalArea.LinesPerFrame  - 2250,
        ActiveArea.FirstPixel    - 384,
        ActiveArea.FirstLine     - 82,
        ActiveArea.PixelsPerLine - 3840,
        ActiveArea.LinesPerFrame - 2160,
        PixelClockFreqInkHz      - 297000,
        inputFrameRate           - 60,
        srcColorType                        - YUV420.
        srcConfig->IsInterlaced             - FALSE,
digcontrol: FillSourceConfig complete
Is3D = FALSE
dispfmt: DEI Disabled, Field Scaling Disabled
dispfmt: Input frame rate is 60Hz 
dispfmt: input resolution: 3840 x 2160
dispfmt_CalculateDisplayArea:  X, Y, Width, Height = 0, 0, 3840, 2160
dispfmt: minPan, pan, maxPan:0, 0, 0
         data = { 3840, 0, 3840 }
dispfmt: minScan, scan, maxScan:0, 0, 0
         data = { 2160, 0, 2160 }
dispfmt_CalculateCroppedArea:  X, Y, Width, Height = 0, 0, 3840, 2160
dispfmt:apply_disp: activeSource = 0, dispSrc = 0
******* Try to set Color Profile 0 *******
pictcont: Active Display is 0 
pictcont: Set White Peaking: 0
pictcont: Set gamma 0
pictcont: Sharpness 0 
pictcont: cscIndex 0 
pictcont: tableIndex 4 

datapath: Transition to MONITORING on Vx1(ITE0)

BTW, I have double checked the DMD HSSI congfiguration, the hardware design and software configuration are the same.

Hi Jing Miao, Is it possible to capture the complete UART messages from the power up. Currently it is displaying only the Connector switching status Also what version of Flash Image are you using for this test. 

Hi, Maybe I find the reason: the eeprom whitch match the DLPC7540 is not work normal, i2c cannot read and write data from eeprom.

I burned  the TI release img into EVM borad, the eeprom also not work. the img version as below. I have checked the i2c address is correct.

Once power on, no any waveform output from DLPC 7540 ,any configurations shoul I to do ? 

Hi Jing Miao, Could you read the System status from the Administrative page of control program and confirm the read status. One reason for EEPROM write failure can be the EEPROM Write enable pin being incorrect, can you check the level of EEPROM write enable pin. the default I2C port and address for EEPROM in the provided flash image is set as Port 1 and Address : 168 please check if you have programmed the same. 

Hi, the schematic as below, could you help to check two points:

     1. I think the I2C addrees is 160(0xA0),not is 168.

     2. The PIN7 "EEPROM_WP" is low now, this status is write enable,right?

Hi Jing Miao, I have double checked that the project configuration is set as follows "I2C address for EEPROM is 168 on I2C Port 1, I2C address for XPR is 160 to be connected on Port2.

Yes driving the pin low/keeping it floating should allow write transactions on the EEPROM.

Yes, there is a EEPROM on PORT1, and i2c address is 168. BUT what is this EEPROM connect to I2C0 used for?

Another related question: How to refresh the eeprom data on EVM board? I changed some values in project Application Data map, build an burn in the img, re-power on, but the satus not update,remain the previos data.

Hi Jing Miao,

       I shall check with the design team and get back to you by next week.

Hi Jing Miao, The EEPROM on I2C0 is to only for test purposes and no dedicated functionality assigned.

Hi Jing Miao,

           The Eeprom configurations are not directly written with the flash data upon bootup. To store the EEPROM data after power up, user can send invalidate settings option in the administrative page as below. Then the Flash data is written to the EEPROM and retained from then.