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Document Feedback CMV12000 Functional Description Datasheet • PUBLIC DS000603 • v6 - 00 • 2023 -Sep- 22 84 │ 51 Figure 66 : Y-Subsampling for Color E xample Pixel Remapping When enabling subsampling, the pixel mapping on…
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CMV12000
Functional Description
Datasheet • PUBLIC
DS000603 • v6-00 • 2023-Sep-22
84 │ 50
Figure 64:
Y-Subsampling for Monochrome Example
Figure 65:
X&Y-Subsampling Settings for Color
Reg. Name
Address
Bits
Default
Description
Number_lines_tot
1
[15:0]
3072
Total number of lines read out from the sensor (1 to
1536)
Sub_offset
66
[15:0]
0
Set to 0
Sub_step
67
[15:0]
1
Set to 2
Sub_en
68
[1]
0
Set to 1
Color
68
[0]
1
Set to 0
Color_exp
68
[3]
1
Set to 0
Sub_offset = 1
Sub_step = 2
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CMV12000
Functional Description
Datasheet • PUBLIC
DS000603 • v6-00 • 2023-Sep-22
84 │ 51
Figure 66:
Y-Subsampling for Color Example
Pixel Remapping
When enabling subsampling, the pixel mapping on the outputs will differ from the default mapping.
When Y-subsampling is enabled, the pixel remapping of the subsampled image using 64 outputs can
be found in the figure below. The rows mentioned below are the readout rows, not the physical rows.
Sub_offset = 0
Sub_step = 2
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CMV12000
Functional Description
Datasheet • PUBLIC
DS000603 • v6-00 • 2023-Sep-22
84 │ 52
Figure 67:
Pixel Remapping for Y-Subsampling
So the bottom channels will read out rows 1, 4, 5, 8, 9, 12 … and the top channels will read out rows
2, 3, 6, 7, 10, 11 … 64 bursts (2 x 32) of 128 (2 x 64) pixels happen in parallel on the data outputs.
This means that two complete subsampled rows are read out in one burst. The amount of rows that
will be read out depends on the value in the corresponding register. By default there are 1536 rows
being read out (3072/2).
When X&Y-subsampling is enabled, the pixel remapping is different for monochrome and color
devices. An example of the subsampled image using 64 outputs can be found in the figures below.
IDLE Pixel 0 to 127Channel 1
IDLEChannel 2
Row 1
Pixel 128 to 255
IDLEChannel 31 Pixel 3840 to 3967
IDLEChannel 32 Pixel 3968 to 4095
Pixel 0 to 127
Row 4
Pixel 128 to 255
Pixel 3840 to 3967
Pixel 3968 to 4095
IDLE Pixel 0 to 127Channel 33
IDLEChannel 34
Row 2
Pixel 128 to 255
IDLEChannel 63 Pixel 3840 to 3967
IDLE
Channel 64
Pixel 3968 to 4095
Pixel 0 to 127
Row 3
Pixel 128 to 255
Pixel 3840 to 3967
Pixel 3968 to 4095
2x32CH
MONO
Pixel 0 to 127
Row 5
Pixel 128 to 255
Pixel 3840 to 3967
Pixel 3968 to 4095
Pixel 0 to 127
Row 8
Pixel 128 to 255
Pixel 3840 to 3967
Pixel 3968 to 4095
Pixel 0 to 127
Row 6
Pixel 128 to 255
Pixel 3840 to 3967
Pixel 3968 to 4095
Pixel 0 to 127
Row 7
Pixel 128 to 255
Pixel 3840 to 3967
Pixel 3968 to 4095