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DLPC3479: external pattern mode, VSYNC frequency lower than 10Hz

Part Number: DLPC3479
Other Parts Discussed in Thread: DLP4710

Hi,

I want use a FPGA to process a Trigger-Input signal, and want "real-time" show up pattern on DMD (send VSYNC to DLPC3479) in external pattern mode (2D pattern).

A pre-load pattern (1st frame) will be send from FPGA to DLPC3479 in the IDLE state, then waiting for the Trigger-In signal.

Once FPGA receive tigger-in, send VSYNC and 2nd frame at the same time.

My question is, there is a 10~60Hz FPS range in spec, and the time interval between two Trigger-in is sometimes greater than 0.1sec.

DLPC3479 & DLP4710 will keep the 1st frame in internal frame buffer? 

Thanks!

Daniel