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DLPC3421: how to write the firmware to spi flash for the first time?

Nandagopalan Varadhan
Prodigy 70 points
Part Number: DLPC3421

Tool/software:

We would like to know firmware writing procedure on SPI flash for the first time. 
Is there any default firmware present in DLPC3421 before we flashing the actual firmware downloaded from DLP firmware downloader page (https://software-dl.ti.com/dlp/pico-fw-selector/)?
Or do we need to have separate spi connection between host processor and spi flash to write the firmware for the first time?

Please help us to clarify this.

  • 0
    TI__Expert 5820 points

    Hello User,

    There is no firmware stored inside the DLPC3421 controller itself. I would recommend either having the SPI flash preprogrammed with the firmware image or having a connector to program the SPI flash directly. For an example of the second option go here, it is the EVM using the same controller. Download the electrical design files and look at page 5 of the schematic.

    Best,

    John