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DLPC410: DLPC410/DLPC900: PWM - 8 bit refresh rate

user6340692
Prodigy 195 points
Part Number: DLPC410
Other Parts Discussed in Thread: DLPC900,

Hello.

I would like to know how DLPC410 and DLPC900 perform PWM to show, for example, an 8-bit grayscale image.

The micro-mirror need to change between 0 and 1 according with some time frequency. Is the controller always writing and resetting the dmd?

For example:

- write 1 in the DMD memories;

- send MCP-Reset;

- write 0 in the DMD memories;

- send MCP-Reset;

- write 1 in the DMD memories;

- send MCP-Reset;

- etc...

Thank you,

Cédric

  • 0
    TI__Mastermind 43135 points

    Hello Cédric,

    As I mentioned in a previous post to you, the DLPC410 does not natively have grayscale .  With this controller you have complete control to build your grayscale sequences.

    For the DLPC900, it is at its core a Video ASIC and for Video Mode uses sophisticated video sequences.  For the other modes - Video Pattern Mode, Pre-stored Pattern Mode, and Pattern On-the-Fly Mode, there are custom linear video sequences employed.  The controller takes care of this for you if you select a bit depth for your images.  You can also display binary patterns and control the display times to build your own PWM sequence.

    I hope this helps.

    Fizix

  • 0 in reply to Fizix
    Prodigy 195 points

    Thank you :)