Other Parts Discussed in Thread: DLPA2005, , DLPDLCR3010EVM-G2, DLPA3000
We are trying to get our DLPC 3433 based board up and running.
We have downloaded the FWsel_DLPC3433_DLPA2005_pm1_i2c0x36_v7p4p2.exe file from the TI site and
programmed the associated binary image file into the SPI flash part.
When we boot the system we see a lot of activity on the SPI lines between the flash part and the 3433 for about
2 ms. Then it goes quiet. The HOST_IRQ signal never goes low, regardless of whether there is a projector connected or not.
Also, we see a momentary flash (red), in the display, then darkness.
We have 2 questions:
1) Does the pin mapping option effectively select a right vs. left projector cable pinout ? If not can you please
clarify what that option controls?
2) We are not sure what to investigate at this point. Can you make any suggestions as why the 3433 appears to
not be successfully booting?
UPDATE:
We are seeing the HOST_IRQ signal go low for ~500uS, to indicate the DLP chip set has properly auto-initialized. Right when the HOST_IRQ signal goes low, the VLED voltage rises from ~4V to ~6.4V, indicating a most likely open LED (according to dlpa089a). During power up, we are noticing a brief flash of the red LED.
In addition, the DMD_LS_CLK signal integrity looks questionable (see attached picture). This is being measured directly at the DLPC3433.
We appear to be turning the supplies on in the correct order, and VOFS, VBIAS and VRST are at their appropriate value (for 200mS).
