AR0130 Datasheet, PDF (22/53 Pages) ON Semiconductor – CMOS Digital Image Sensor

AR0130: 1/3-Inch CMOS Digital Image Sensor
Features
Readout Modes
Digital Binning
By default, the resolution of the output image is the full width and height of the FOV as
defined above. The output resolution can be reduced by digital binning. For RGB and
monochrome mode, this is set by the register R0x3032. For Context A, use bits [1:0], for
Context B, use bits [5:4]. Available settings are:
00 = No binning
01 = Horizontal binning
10 = Horizontal and vertical binning
Binning gives the advantage of reducing noise at the cost of reduced resolution. When
both horizontal and vertical binning are used, a 2x improvement in SNR is achieved
therefore improving low light performance
Bayer Space Resampling
All of the pixels in the FOV contribute to the output image in digital binning mode. This
can result in a more pleasing output image with reduced subsampling artifacts. It also
improves low-light performance. For RGB mode, resampling can be enabled by setting
of register 0x306E[4] = 1.
Mirror
Column Mirror Image
By setting R0x3040[14] = 1, the readout order of the columns is reversed, as shown in
Figure 15. The starting color, and therefore the Bayer pattern, is preserved when
mirroring the columns.
When using horizontal mirror mode, the user must retrigger column correction. Please
refer to the column correction section to see the procedure for column correction retrig-
gering. Bayer resampling must be enabled, by setting bit 4 of register 0 x 306E[4] = 1.
Figure 15: Six Pixels in Normal and Column Mirror Readout Modes
LV
Normal readout
DOUT[11:0]
Reverse readout
DOUT[11:0]
G0[11:0] R0[11:0] G1[11:0] R1[11:0] G2[11:0] R2[11:0]
G2[11:0] R2[11:0] G1[11:0] R1[11:0] G0[11:0] R0[11:0]
AR0130 DS Rev. L Pub. 6/15 EN
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