ZHCSCO5B June 2014 – February 2018 DLPA2000
PRODUCTION DATA.
A pico-projector is created by using a DLP chipset comprised of DLP2010 (0.2 WVGA) DMD, DLPC3430, or DLPC3435 controller and DLPA2000 PMIC/LED driver. The DLPC3430 or DLPC3435 does the digital image processing, the DLPA2000 provides the needed analog functions for the projector, and DMD is the display device for producing the projected image.
In addition to the three DLP chips in the chipset, other chips may be needed. At a minimum, a flash part is needed to store the software and firmware to control the DLPC3430 or DLPC3435.
The illumination light that is applied to the DMD is typically from red, green, and blue LEDs. These are often contained in three separate packages, but sometimes more than one color of LED die may be in the same package to reduce the overall size of the pico-projector.
When connecting the DLPC3430 or DLPC3435 to the host processing to receive images, a parallel interface is used. While using the parallel interface, I2C should be connected to the host processor for sending commands to the DLPC3430 or DLPC3435.
The only power supplies needed external to the projector are the battery (SYSPWR) and a regulated 1.8-V supply. The entire pico-projector can be turned on and off by using a single signal called PROJ_ON. When PROJ_ON is high, the projector turns on and begins displaying images. When PROJ_ON is set low, the projector turns off and draws just microamps of current on SYSPWR. When PROJ_ON is set low, the 1.8-V supply can continue to be left at 1.8 V and used by other non-projector sections of the product. If PROJ_ON is low, the DLPA2000 will not draw current on the 1.8-V supply.