DLPC3421 datasheet(39/63 Pages) TI

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7.4 Device Functional Modes

The DLPC34xx controller has two functional modes (ON and OFF) controlled by a single pin, PROJ_ON

(GPIO_08).

• When the PROJ_ON pin is set high, the controller powers up and can be programmed to send data to the

DMD.

• When the PROJ_ON pin is set low, the controller powers down and consumes minimal power.

7.5 Programming

The DLPC34xx controller contains an Arm® Cortex®-M3 processor with additional functional blocks to enable

video processing and control. TI provides software as a firmware image. The customer is required to flash this

firmware image onto the SPI flash memory. The DLPC34xx controller loads this firmware during startup and

regular operation. The controller and its accompanying DLP chipset requires this proprietary software to operate.

The available controller functions depend on the firmware version installed. Different firmware is required for

different chipset combinations (such as when using different PMIC devices). See Documentation Support at the

end of this document or contact TI to view or download the latest published software.

Users can modify software behavior through I2C interface commands. For a list of commands, view the software

user's guide accessible through the Documentation Support page.

www.ti.com

DLPC3421

DLPS231 – OCTOBER 2021

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DLPC3421 데이터시트(PDF) 39 Page - Texas Instruments