NTSC signal input.
takashitakahash -
Hi community.
Our customer use Vybrid5R (SVF522R3K1CMK4) analog video input (VADCSE0) to terminal
enter the NTSC video signal to display an image on the TFT.
The detection of input signal use the registers of havesignal of Bit 0 , describe on Vybrid_Reference_Manual _-_ R_Series_ (Auto) _-_ Rev_6.pdf
of sect 61.6.22 Video Mode (VDEC_VIDMOD).
Would you please tell me the conditions to become havesignal is 0 when it becomes to video signal is fail.
Max input voltage and minimum input voltage.
Or Example) When input signal is ** V more voltage is applied, fail register rises.
The voltage input of up to ** V ~ ** V, the screen disturbed ,but does not rise fail to register.
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Hello Takashi,
VDEC_VIDMOD handles a valid video signal, by the Standard Video signal output level is 1 Vpp 10% into 75 ohms. The following signal level applies to video signals like composite video signal that has sync information in it. The video inputs are generally designed to get this specified level input level at 3 dB or 6 dB accuracy (meaning 0.5-2V signal). The video signals that do not have sync signals (for example RGB component signals) use level of 0.7Vpp (same level as the picture part of normal video signal).
Have a great day,
Jaime
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