DLPC7540EVM: How to feed video signals via FPD-Link port to DLPC7540EVM

Sherman

Part Number: DLPC7540EVM
Other Parts Discussed in Thread: DLP650TEEVM, , DLPC7540, DLP650TE, DLP471TE, DLP471NE, DLP651NE

Dear Team,

I have a set of DLPC7540EVM+DLP650TEEVM evaluation platform in hand now.

When I tried to feed video signals via fpd-link port to DLPC7540EVM, it cannot be recognized correctly and there is no display on DMD.

What I have done:

1. fpd-link connection and electrical characteristics are checked.

2. HDMI to Vx1 input is checked.

3. FPD configration register is checked,

4.I tried to set "Write Source configuration" based on what I got from Step 2, but "0xA excution failed" occurred

So I cannot feed signal via fpd-link port now, and my questions are:

1. how can I find out whether DLPC recognized fpd-link or not?

2. or do I have to set relative configuration rather than waiting for automatically detection?

Thank you

Best regards,

Sherman HUO

over 1 year ago

0 Sherman 11 months ago in reply to Venkata Pavan Mahankali

Prodigy 20 points

Dear Team,

Sorry to reply late.

This time I connect all 5 lanes.

With Flash_DLPC7540_DLP650TE_LED_P65_July_10.img, I failed both single lvds and dual lvds.

1. No detection in single lvds mode as following shown.

single_lvds_fail.txt

------------------- SCANNING CONNECTOR : FPD(DIRECT) ----------------
Warning: No AFE1000/HW communcation found while attempting to place stand-by (However connector table seem to have a VGA entry)
digcontrol: ConfigureForSearch complete
Event: DSM Lost Lock on channel

2. "datapath: SRC_SetSourceConfig failed -13" in dual lvds mode as following shown.

dual_lvds_fail.txt

------------------- SCANNING CONNECTOR : FPD(DIRECT) ----------------
Warning: No AFE1000/HW communcation found while attempting to place stand-by (However connector table seem to have a VGA entry)
digcontrol: ConfigureForSearch complete
Event: Source Change Detected on channel
Event: DSM Locked on channel
digcontrol: FillSourceConfig - srcConfig:
        TotalArea.PixelsPerLine  - 1056,
        TotalArea.LinesPerFrame  - 525,
        ActiveArea.FirstPixel    - 46,
        ActiveArea.FirstLine     - 22,
        ActiveArea.PixelsPerLine - 800,
        ActiveArea.LinesPerFrame - 480,
        PixelClockFreqInkHz      - 33000,
        inputFrameRate           - 59,
        srcConfig->IsInterlaced             - FALSE,
digcontrol: FillSourceConfig complete
Is3D = FALSE
datapath: SRC_SetSourceConfig failed -13
Connector timeout is detected!, switching to next connector...

0 Sherman 11 months ago in reply to Sherman

Prodigy 20 points

Also, I tried Flash_DLPC7540_DLP650TE_LED_P65_LED_FPD.img by manually set FPD mode and single/dual FPD link.

Good news is single FPD-Link is correctly detected and PC screen is shown on DMD! FINALLY!

single_lvds_succeed.txt

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

datapath: Transition to SCANNING on FPD(DIRECT)
Event: Source Change Detected on channel
Event: DSM Locked on channel
digcontrol: FillSourceConfig - srcConfig:
        TotalArea.PixelsPerLine  - 1056,
        TotalArea.LinesPerFrame  - 525,
        ActiveArea.FirstPixel    - 46,
        ActiveArea.FirstLine     - 22,
        ActiveArea.PixelsPerLine - 800,
        ActiveArea.LinesPerFrame - 480,
        PixelClockFreqInkHz      - 33000,
        inputFrameRate           - 59,
        srcConfig->IsInterlaced             - FALSE,
digcontrol: FillSourceConfig complete
Is3D = FALSE
dispfmt: DEI Disabled, Field Scaling Disabled
dispfmt: Input frame rate is 59Hz 
dispfmt: input resolution: 800 x 480
dispfmt_CalculateDisplayArea:  X, Y, Width, Height = 0, 0, 3840, 2160
dispfmt: minPan, pan, maxPan:0, 0, 0
         data = { 800, 0, 800 }
dispfmt: minScan, scan, maxScan:0, 0, 0
         data = { 480, 0, 480 }
dispfmt_CalculateCroppedArea:  X, Y, Width, Height = 0, 0, 800, 480
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 16 
pictcont: cscIndex 0 
pictcont: tableIndex 0 

datapath: Transition to MONITORING on FPD(DIRECT)

But dual FPD-link still not work,

0456.dual_lvds_fail.txt

------------------- SCANNING CONNECTOR : FPD(DIRECT) ----------------
Warning: No AFE1000/HW communcation found while attempting to place stand-by (However connector table seem to have a VGA entry)
digcontrol: ConfigureForSearch complete
Event: Source Change Detected on channel
Event: DSM Locked on channel
digcontrol: FillSourceConfig - srcConfig:
        TotalArea.PixelsPerLine  - 1056,
        TotalArea.LinesPerFrame  - 525,
        ActiveArea.FirstPixel    - 46,
        ActiveArea.FirstLine     - 22,
        ActiveArea.PixelsPerLine - 800,
        ActiveArea.LinesPerFrame - 480,
        PixelClockFreqInkHz      - 33000,
        inputFrameRate           - 59,
        srcConfig->IsInterlaced             - FALSE,
digcontrol: FillSourceConfig complete
Is3D = FALSE
datapath: SRC_SetSourceConfig failed -13
Connector timeout is detected!, switching to next connector...

Have you tried dual FPD-link connection?

And would you please tell me what "datapath: SRC_SetSourceConfig failed -13" means?

Thank you.

Sherman HUO

0 made4engineering 11 months ago in reply to Sherman

TI__Mastermind 27440 points

I believe the -13 refers to: Pixel clock frequency argument value is out of range.

0 Sherman 11 months ago in reply to made4engineering

Prodigy 20 points

Hi made4engineering

Thank you for your information. Fclock min is 20MHz according to the manual.

I will try higher resolution.

Best regards,

Jian HUO

0 Venkata Pavan Mahankali 11 months ago in reply to Sherman

TI__Prodigy 530 points

Thank you Sherman. Please let us know the results.

0 Sherman 11 months ago in reply to Venkata Pavan Mahankali

Prodigy 20 points

Dear made4engineering, Venkata Pavan Mahankali

I succeed with 1600x900 dual FPD-link video utilizing Flash_DLPC7540_DLP650TE_LED_P65_LED_FPD.img.

24/30 bit mode and single/dual FPD-link are also checked with no problem.

dual_lvds_succeed.txt

source: SPLASH address:  0x10522cd4
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

datapath: Transition to IDLING on FPD(DIRECT)

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

datapath: Transition to SCANNING on FPD(DIRECT)
Event: Source Change Detected on channel
Event: DSM Locked on channel
digcontrol: FillSourceConfig - srcConfig:
        TotalArea.PixelsPerLine  - 2112,
        TotalArea.LinesPerFrame  - 934,
        ActiveArea.FirstPixel    - 424,
        ActiveArea.FirstLine     - 30,
        ActiveArea.PixelsPerLine - 1600,
        ActiveArea.LinesPerFrame - 900,
        PixelClockFreqInkHz      - 118250,
        inputFrameRate           - 60,
        srcConfig->IsInterlaced             - FALSE,
digcontrol: FillSourceConfig complete
Is3D = FALSE
dispfmt: DEI Disabled, Field Scaling Disabled
dispfmt: Input frame rate is 60Hz 
dispfmt: input resolution: 1600 x 900
dispfmt_CalculateDisplayArea:  X, Y, Width, Height = 0, 0, 3840, 2160
dispfmt: minPan, pan, maxPan:0, 0, 0
         data = { 1600, 0, 1600 }
dispfmt: minScan, scan, maxScan:0, 0, 0
         data = { 900, 0, 900 }
dispfmt_CalculateCroppedArea:  X, Y, Width, Height = 0, 0, 1600, 900
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 16 
pictcont: cscIndex 0 
pictcont: tableIndex 0 

datapath: Transition to MONITORING on FPD(DIRECT)

In conclusion, following three points should take care while using FPD-link port in my case:

1. FW update( Flash_DLPC7540_DLP650TE_LED_P65_LED_FPD.img)

2. Guarantee no floating lane in FPD-link port which is being used

3. Pay attention to FPD-link CLK range (20MHz-165MHz per port)

Thank you for all your help! Appreciate everything you've done!

Best regards,

Sherman HUO

0 Venkata Pavan Mahankali 11 months ago in reply to Sherman

TI__Prodigy 530 points

Thank you for the feedback and details Sherman, We shall close this thread now.

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DLPC7540EVM: How to feed video signals via FPD-Link port to DLPC7540EVM