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DLP3010EVM-LC: Is the flash chip necessary to turn on the projector (with DLPC3478)?

user4825829
Prodigy 170 points
Part Number: DLP3010EVM-LC
Other Parts Discussed in Thread: DLPC3478

Hello,

I designed a board like DLP3010EVM-LC. It runs normally. However, one day, I tried to update the flash with new data but had failed for much times, and I erased the flash chip eunexpectedly using the DLP® Display and Light Control EVM GUI (Advanced mode) .  From then on, the projector cannot be started again. The HOST_IRQ signal remains high after the projector is powered on. I want to ask:

1) Is the flash chip necessary for the DLPC3478?

2) How can I reprogram the flash with the image DLP3010EVM-LC-FW, since the GUI cannot communicate with the DLPC3478 if the HOST_IRQ signal remains high.

I have tried many times updating the flash image using the GUI tools. It didn't work at all, although it prompted "Flash Image Update Completed", as the image shown below.

Looking forward to your reply. THANKS!

  • 0
    TI__Mastermind 20045 points

    Hello,

    Yes, the flash IC contains the firmware which is required to boot-up the system. You will need to reprogram the SPI flash independent of the DLPC3478.

    Did you replicate the Cypress IC on the board? Normally on our EVM a corrupted flash can be fixed by powering up the EVM, leaving the power switch in the off position, and "update flash image" via the regular GUI mode This will use the Cypress IC to directly rewrite the flash. 

    Thanks,

    Kyle 

  • 0 in reply to Kyle Rakos
    Prodigy 170 points

    Thank you!

    But I have another question. While I use "update flash image" via the regular GUI mode, does the GUI communicate with the flash IC via SPI?