MT9P001 Datasheet, PDF (12/48 Pages) ON Semiconductor – CMOS Digital Image Sensor

MT9P001: 1/2.5-Inch 5Mp Digital Image Sensor
Pixel Data Format
Readout Sequence
Row Readout
Typically, the readout window is set to a region including only active pixels. The user has
the option of reading out dark regions of the array, but if this is done, consideration must
be given to how the sensor reads the dark regions for its own purposes.
Rows are read from the array in the following order:
1. Dark rows:
If Show_Dark_Rows is set, or if Manual_BLC is clear, dark rows on the top of the array
are read out. The set of rows sampled are adjusted based on the Row_Bin setting such
that there are 8 rows after binning, as shown in the Table 6. The Row_Skip setting is
ignored for the dark row region.
If Show_Dark_Rows is clear and Manual_BLC is set, no dark rows are read from the
array as part of this step, allowing all rows to be part of the active image. This does not
change the frame time, as H_DR is included in the vertical blank period.
2. Active image:
The rows defined by the row start, row size, bin, skip, and row mirror settings are read
out. If this set of rows includes rows read out above, those rows are resampled, mean-
ing that the data is invalid.
Table 6:
Dark Rows Sampled as a Function of Row_Bin
Row_Bin
0
1
3
HDR (Dark Rows After Binning)
8
8
8
Column Readout
Columns are read out in the following order:
1. Dark columns:
If either Show_Dark_Columns or Row_BLC is set, dark columns on the left side of the
image are read out followed by those on the right side. The set of columns read is
shown in Table 7. The Column_Skip setting is ignored for the dark columns.
If neither Show_Dark_Columns nor Row_BLC is set, no dark columns are read, allow-
ing all columns to be part of the active image. This does not change the row time, as
W_DC is included in the vertical blank period.
2. Active image:
The columns defined by column start, column size, bin, skip, and column mirror set-
tings are read out. If this set of columns includes the columns read out above, these
columns are resampled, meaning the data is invalid.
Table 7:
Dark Columns Sampled as a Function of Column_Bin
Column_Bin
0
1
3
WDC (Dark Columns After Binning)
80
40
20
MT9P001_DS Rev. L 4/15 EN
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