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ADV7343 input data during blanking terms.

Hi,

We are using the ADV7343, also we inputs H_SYNC/V_SYNC(P_HSYNC/P_VSYNC) from external.
And, we need Black Burst(tri-level sync of HD, bi-level sync of SD) output signal.

Do we need to aply specific data for pixel inputs  during "Blanking terms" ?
For example, 0x3F, 0x00, etc.
(We do not use CGMS, WSS, VITS.)

Our board design is,  input pixel signals tied to Low or High, and their is not controlable.  (Y=0x80, S=0x80, C=0x80, each signals tied VDD/GND.)

Regards