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DLP4500: Cannot continuously display 2 pattern sequence patterns in single 24bit video stream data in the pattern sequence mode

weng yeong pang
Prodigy 170 points
Part Number: DLP4500


Dear TI,

I am using DLP4500EVM and I encounter cannot continuously display 2 pattern sequence patterns in single 24bit video stream data in the pattern sequence mode.

My pixel clock is set to 73MHz. I am using parallel RGB interface to stream the data. Below is the pattern sequence settings set in the DLP4500 light crafter GUI.

I am continuously streaming data to DLP4500EVM with Vsync signal frame rate around 60Hz. Below is the feedback signal of the DLP4500EVM. Blue colour signal is Vsync signal and pink colour signal is TRIG_OUT_1 of DLP4500EVM.

In the user guide manual, it state that it suppose will have delay of one frame in the DMD load video output for the first video input only. But from the DLP4500EVM feedback signal, I get the delay of one frame in the DMD load video output everytime. Is there anything wrong with my settings?

Best regards,

Weng Yeong