Other Parts Discussed in Thread: DLPA2005, , DLPC3470
I am using DLPC3478 together with DLPA2005. I am currently using internal pattern mode, though I will likely also be using the pixel-parallel streaming mode.
We are not using the DLPA2005 to drive the R/G/B LEDs directly, but have our own LED drivers implemented. We were planning on using the LED_SEL signals from DLPC3478 to turn on / off LEDs, though we have the flexibility in our design to use other signals.
From the DLPC3478 documentation, it seems to me that the LED_SEL_0 and LED_SEL_1 signals are active during the actual exposure of the image. However, the LEDs will have a certain turn-on-time, such that I would have liked to have the LED_SEL signals go active some time before the image exposure starts.
For TRIG_OUT_2 it is possible to configure a negative delay relative to the exposure time, such that the signal goes active prior to the image exposure.
Is it possible to do something similar to adjust the timing of the LED_SEL_0 and LED_SEL_1 signals? If not, how would you ensure that the LEDs are enabled early enough to stabilize prior to image exposure?