ZHCSI46C April 2018 – December 2020 DLPC3470
PRODUCTION DATA
Pattern display is one of the key capabilities of the DLPC3470 display and light controller. When the DLPC3470 controller is configured for pattern display, most video processing functions can be bypassed to allow for accurate pattern display. For user flexibility and simple system design the DLPC3470 controller supports both external pattern and internal pattern streaming modes. In external pattern streaming mode, patterns are sent to the DLPC3470 controller over parallel interface. In internal pattern streaming mode, 1D patterns are pre-loaded in flash memory and a host command is sent to DLPC3470 controller to display the patterns. Internal pattern mode allows for a simple system design by eliminating the need for any external processor to generate and sent 1D patterns to the DLPC3470 controller.
The DLPC3470 controller has two optional trigger out signals and one optional trigger in signal to synchronize patterns with a camera, sensor, or other peripherals.
SIGNAL NAME | DESCRIPTION |
---|---|
TRIG_OUT_1 (TSTPT_4) | External pattern mode: Active at the beginning of each input frame. |
Internal pattern mode: Active at the beginning of a predefined group of patterns. | |
TRIG_OUT_2 (GPIO_07) | Active during display of each pattern. When operating in external pattern mode one video frame can contain multiple patterns. |
TRIG_IN (3DR) | Active in Internal Pattern Display mode only. An external input trigger signal is used to advance to the next pattern in internal pattern mode. |