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Document Feedback CMV12000 Functional Description Datasheet • PUBLIC DS000603 • v6 - 00 • 2023 -Sep- 22 84 │ 55 Figure 71 : Binning for Monochrome Exam ple Figure 72 : Binning Settings for Col or Reg. Name Address Bits D…

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CMV12000
Functional Description
Datasheet • PUBLIC
DS000603 • v6-00 • 2023-Sep-22
84 │ 54
7.4.7 Binning
This mode is only supported in two sided read-out. To maintain the same field of view but reduce the
noise coming out of the sensor, a binning mode is implemented on the chip. This mode will sum four
pixels (in the analog domain) to reduce the noise and data coming from the chip. This increases the
responsivity with x4. The PGA divide-by-3 can be used to reduce this. Other PGA gains are not
possible (x2, x3, x4). Different binning schemes can be programmed by setting the appropriate
registers. These binning schemes can take into account whether a color or monochrome sensor is
used to preserve the Bayer pattern information. The registers involved in binning are detailed below. A
distinction is made between a monochrome and color mode. Binning can be enabled in every
windowing mode.
When monochrome binning is used, the CMV12000 will average four pixels and reads out this
average pixel value. This will result in an image, which is four times smaller than the original image (X-
size/2 and Y-size/2, max 2048 x 1536).
To enable this monochrome binning, the following registers need to be changed.
Figure 70:
Binning Settings for Monochrome
Reg. Name
Address
Bits
Default
Description
Number_lines_tot
1
[15:0]
3072
Total number of lines of the original (pre-binning) image
(1 to 3072)
Sub_offset
66
[15:0]
0
Set to 0
Sub_step
67
[15:0]
1
Set to 1
Bin_en
68
[2]
0
Set to 1
Color
68
[0]
1
Set to 1
Color_exp
68
[3]
1
Set to 1
CMV12000
Functional Description
Datasheet • PUBLIC
DS000603 • v6-00 • 2023-Sep-22
84 │ 55
Figure 71:
Binning for Monochrome Example
Figure 72:
Binning Settings for Color
Reg. Name
Address
Bits
Default
Description
Number_lines_tot
1
[15:0]
3072
Total number of lines of the original (pre-binning) image
(1 to 3072)
Sub_offset
66
[15:0]
0
Set to 1
Sub_step
67
[15:0]
1
Set to 1
Bin_en
68
[2]
0
Set to 1
Color
68
[0]
1
Set to 0
Color_exp
68
[3]
1
Set to 0
Sub_offset = 0
Sub_step = 1
CMV12000
Functional Description
Datasheet • PUBLIC
DS000603 • v6-00 • 2023-Sep-22
84 │ 56
Figure 73:
Binning for Color Example
Pixel Remapping
When enabling binning, the pixel mapping on the outputs will differ from the default mapping.
Figure 74:
Pixel Remapping for Monochrome Binning
Sub_offset = 1
Sub_step = 1
IDLE Pixel 0 row1Channel 1
IDLEChannel 2
Row 1+2
IDLEChannel 3
IDLEChannel 31
IDLEChannel 32
Pixel 0 row2 Pixel 1 row1 Pixel 1 row2 Pixel 63 row1 Pixel 63 row2
Pixel 64 row1 Pixel 64 row2 Pixel 65 row1 Pixel 65 row2 Pixel 127 row1 Pixel 127 row2
Pixel 128 row1 Pixel 128 row2 Pixel 129 row1 Pixel 129 row2 Pixel 191 row1 Pixel 191 row2
Pixel 1920 row1 Pixel 1920 row2 Pixel 1921 row1 Pixel 1921 row2 Pixel 1983 row1 Pixel 1983 row2
Pixel 1984 row1 Pixel 1984 row2 Pixel 1985 row1 Pixel 1985 row2 Pixel 2047 row1 Pixel 2047 row2
Pixel 0 row5
Row 5+6
Pixel 0 row6 Pixel 1 row5 Pixel 1 row6 Pixel 63 row5 Pixel 63 row6
Pixel 64 row5 Pixel 64 row6 Pixel 65 row5 Pixel 65 row6 Pixel 127 row5 Pixel 127 row6
Pixel 128 row5 Pixel 128 row6 Pixel 129 row5 Pixel 129 row6 Pixel 191 row5 Pixel 191 row6
Pixel 1920 row5 Pixel 1920 row6 Pixel 1921 row5 Pixel 1921 row6 Pixel 1983 row5 Pixel 1983 row6
Pixel 1984 row5 Pixel 1984 row6 Pixel 1985 row5 Pixel 1985 row6 Pixel 2047 row5 Pixel 2047 row6
IDLE Pixel 0 row3Channel 33
IDLEChannel 34
Row 3+4
IDLEChannel 35
IDLE
Channel 63
IDLE
Channel 64
Pixel 0 row4 Pixel 1 row3 Pixel 1 row4 Pixel 63 row3 Pixel 63 row4
Pixel 64 row3 Pixel 64 row4 Pixel 65 row3 Pixel 65 row4 Pixel 127 row3 Pixel 127 row4
Pixel 128 row3 Pixel 128 row4 Pixel 129 row3 Pixel 129 row4 Pixel 191 row3 Pixel 191 row4
Pixel 1920 row3 Pixel 1920 row4 Pixel 1921 row3 Pixel 1921 row4 Pixel 1983 row3 Pixel 1983 row4
Pixel 1984 row3 Pixel 1984 row4 Pixel 1985 row3 Pixel 1985 row4 Pixel 2047 row3 Pixel 2047 row4
Pixel 0 row7
Row 7+8
Pixel 0 row8 Pixel 1 row7 Pixel 1 row8 Pixel 63 row7 Pixel 63 row8
Pixel 64 row7 Pixel 64 row8 Pixel 65 row7 Pixel 65 row8 Pixel 127 row7 Pixel 127 row8
Pixel 128 row7 Pixel 128 row8 Pixel 129 row7 Pixel 129 row8 Pixel 191 row7 Pixel 191 row8
Pixel 1920 row7 Pixel 1920 row8 Pixel 1921 row7 Pixel 1921 row8 Pixel 1983 row7 Pixel 1983 row8
Pixel 1984 row7 Pixel 1984 row8 Pixel 1985 row7 Pixel 1985 row8 Pixel 2047 row7 Pixel 2047 row8
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