I used ADV7612 in project, but I found the LSB pixel output of ADV7612 is unstable.
In video output YCbCr mode, Y channel has latest LSB, but the Cb, Cr channel seems to have huge unstable range as attached pics.
Is it normal situation or not?
if not, how can I do video calculator or CSC converter compensation from my processor FPGA. please give me some suggesitons.
As this application is digital signage, customer needs more video quality.
Input source: PC with ATI, NVIDIA graphic card
Input resolution to ADV7612: 1280x1024@60Hz, 1920x1080@60Hz
measure equipment: Tektronix TLA5202 logic analyzer
initial setting are reference: 6-1d, 6-1e, and 6-1f of EVB script settings.
below READ pattern test condition, TLA5202 measurement ADV7612 digital video output data and sync singals ((VS, HS, DE, QE, CLK),
sampling rate ”1ns”.
Input Video : 1280x1024@60Hz,
Input pattern: RED, the R channel value should be 0x80 from TLA5202.
But actually the LSB bit is unstable 0x80 ~ 0x7F.
When I tried to input a white pattern, and capture video data information below.