ZHCSI46C April 2018 – December 2020 DLPC3470
PRODUCTION DATA
A high accuracy 3D depth scanner product can be created by using a DLP chipset comprised of DLP2010LC or DLP2010NIR DMD, DLPC3470 controller and DLPAxxxx PMIC/LED driver. The DLPC3470 simplifies the pattern generation, the DLPAxxxx provides the needed analog functions and DMD displays the required patterns for accurate 3D depth scanning.
In addition to the three DLP devices in the chipset, other components may be required to complete the application. Minimally, a flash component is required to store patterns, the software, and the firmware in order to control the DLPC3470 controller.
DLPC3470 controller supports any illumination source, including IR light source (LEDs or vertical-cavity surface-emitting laser - VCSEL), UV light source, or visible light source (red, green, or blue LEDs or lasers).
For connecting the DLPC3470 controller to the host processing for receiving patterns or video data, the parallel interface is used. Connect an I2C interface to the host processor to send commands to the DLPC3470 controller.
The only required power supplies that are external to the projector system chipset are the battery (SYSPWR) and possibly a regulated 1.8-V supply (some TI PMICs generate the 1.8-V supply but the DLPA200x does not).
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. If 1.8 V is supplied separately from the PMIC (as is the case with the DLPA200x), 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.