Hello! We try to use AFE LM98725 . We have some trouble with black calibration ("Black Calibration Only"). According to the documentation (Revision H), registor "Calibration # Lines" (Page[2], Addr [1] registor map) must set number of lines for calibration. We set infinity calibration (# Lines = 255), but it does not work continuously. We use RGB linear sensor with three lines. Initially (immediately after calibration is run), the level of black pixels in our RGB sensor is set by "Black Target" registor, but it does not hold over time (especially for blue line). The sensor's black level moves from "Black Target" with over time. So, we have to permanently restart calibration for holding black level on "Black Target". We have to regularly toggle pin CAL (or send SPI messages) for run calibration continuously. We use old revision of AFE with brand NS (not Texas Instruments). May be this reason? If no, how we can run black calibration with infinity mode? Thanks.
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