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Problems in self-designed DLP board

Problems in self-designed DLP board

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xiaochun diao
Posted by
on Aug 09 2012 22:04 PM
Intellectual395 points

Hello

i have a self-designed DLP board  ,

( i bought a LightCommander , so it gave me a lot of help during designing the pcb board)

Now , i have some problems  in using my own board:

the run log shows many error when i run the project

Here is the whole run log

 0044.runlog.txt

 

i'm using the newest software & hardware-firmware version

can you tell me where does the problem occur ?

 i hope you give me some advice about it .

Thank you ~~

 

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  • Sanjeev
    Posted by
    on Aug 19 2012 22:52 PM
    Suggested Answer
    Expert5775 points

    Hi Diao,

    It is very hard to tell which module is the problem. What it means is two things -

    1) Cypress USB peripheral not running correctly. To rule out this, upon bootup check for USB enumeration on the PC, if it is detected as "Texas Instruments DLPC200 USB Driver" then it not the USB Peripheral issue.

    2) This is mostly like reason if (1) above is fine, DLPC200 is not running properly, the reason for this DLPC200 not powered in right power-on sequence and the Serial Cofiguration flash is not programmed correctly. Ensure the Serial flash is programmed correctly.

    Regards,

    Sanjeev

     

     

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  • xiaochun diao
    Posted by
    on Aug 20 2012 03:41 AM
    Intellectual395 points

    Hi Sanjeev

    1) it is detected as "Texas Instruments DLPC200 USB Driver"  all the time

    2) i used a SPI programmer to program the empty flash -M25P64- , after programmed it with the firmware you gave me , i checked it once , it was corrcet .

     

    You have noticed about " power-on sequence " 

    How can i find the mistakes in designing?  And how to correct them ?

     

    Thank you ~

    -diao xiaochun

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  • Sanjeev
    Posted by
    on Aug 20 2012 08:47 AM
    Expert5775 points

    Hi Diao,

    2) We suggest it is better to be as close as possible to DLP LightCommander reference design. Wrt debuggin part please refer to http://www.ti.com/lit/er/dlpz004b/dlpz004b.pdf section 5.5 and verify your board meets the specified timing. The problem is mostly related around this issue.

    TI recognised DLP Design House have experience in customizing the system according to your needs. We highly recommend you to get in touch with them, this will help in speeding up your product design cycle. TI recommended design house list can be found here http://www.ti.com/analog/docs/memsdlpdsgn.tsp?sectionId=622&tabId=2448

    Regards,
    Sanjeev

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  • xiaochun diao
    Posted by
    on Sep 06 2012 01:49 AM
    Intellectual395 points

    Hi Sanjeev

    thank you for you advice

    we'll try these .

    -diao xiaochun

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