WM8232 Datasheet, PDF (45/141 Pages) Wolfson Microelectronics plc – 70MSPS 3-Channel AFE with Sensor Timing Generation and LVDS/CMOS Data Output

WM8232
SCENARIO 3
In this scenario, Coarse Adjust Calibration is enabled for the 1^st line; Fine Adjust Calibration is enabled
for every line, with the Fine Adjust result accumulated throughout frame and used every line. This
scenario allows any variation in the black-level to be tracked throughout the frame by accumulating
the Fine Adjust result over multiple lines. This method does not deal with as large amounts of D.C.
drift throughout the frame as scenario 1, but it will produce less line-by-line variation. Table 16 shows
which registers are required for this scenario with example settings.
SETUP
BPIX_AVAIL CADUR FRAME_START
REGISTER
Value
50
2
1
Table 16 Example Register Settings for Scenario 3
FA_EVERYLINE
1
FA_ACCUM
1
Black Pixels
Auto Fine Adjust clear
Fine Adjust not cleared
Fine Adjust not cleared
Fine Adjust not cleared
Fine Adjust not cleared
Fine Adjust not cleared
Fine Adjust not cleared
Fine Adjust not cleared
Fine Adjust not cleared
Fine Adjust not cleared
Fine Adjust not cleared
Figure 31 Scenario 3
Image Pixels
Use Fine Adjust Result here
Use Fine Adjust Result here
Use Fine Adjust Result here
Use Fine Adjust Result here
Use Fine Adjust Result here
Use Fine Adjust Result here
Use Fine Adjust Result here
Use Fine Adjust Result here
Use Fine Adjust Result here
Use Fine Adjust Result here
Use Fine Adjust Result here
Line 1
Line 2
Line 3
Line 4
Line 5
Line 6
Line 7
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Line n
Rev 4.6
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