kac-9638 ETC-unknow, kac-9638 Datasheet - Page 12

• Manufacturer Part Number: kac-9638
• Description: Kodak Kac-9638 Cmos Image Sensor
• Manufacturer: ETC-unknow

IMAGE SENSOR SOLUTIONS
Functional Description
2.0
All programmable registers that effect the frame rate and inte-
gration timing are double buffered; such that the new values
only take effect at the start of the new frame. When writing to all
split double buffered registers, e.g. ITIMEH and ITIMEL, the fol-
lowing procedure must be followed:
3.0
The integrated timing and control circuit allows any size window
in any position within the active region of the array to be read out
with a 4x4 pixel resolution. The window read out is called the
“Active Window”.
Four coordinates (start row and column addresses, end row and
column addresses) need to be programmed to define the size
and location of the “Active Window” to be read out (see Figure
13).
Notes:
• By default the “Active Window” is an optically centered with a
• The “Active Window” registers are double buffered.
KAC-9638
WStartRow[10:2]
www.kodak.com/go/imagers 585-722-4385
WEndRow[10:2]
size of 1280 columns by 1024 rows as shown in figure 14.
start address
start address
end address
WStartRow
end address
WEndRow
- to change both the MSB and LSB, first write to the MSB
- to change only the MSB, first write to the MSB register
- to only change the LSB write to the LSB register.
(1027)
row
register and then write to the LSB register,
and then write the unchanged value of the LSB to the
LSB register,
row
DOUBLE BUFFERED REGISTERS
WINDOWING
(4)
row
row
start address
WColStart
Figure 14. Default Active Window
column
(4)
Figure 13. Windowing
WColStart[10:2]
start address
column
Default Active Window
Active Window
Active Pixel Array
(continued)
Active Pixel Array
WColEnd[10:2]
end address
column
end address
WColEnd
(1283)
column
12
out.
4.3
The horizontal scan direction can be reversed by setting the
“HScanDir” bit in the HSCAN register to a logic 0, while setting
the “VScanDir” bit in the VSCAN register to a logic 1. In this
case for the example shown in Figure 15, the read out order will
be r0,q0,...,a0 then r1,q1,...,a1 and so on until pixel a10 is read
4.0
The pixels in the array are read out in progressive scan. In pro-
gressive scan, every pixel in every row in the defined “Active
Window” is consecutively read out, one pixel at a time. The first
8 pixels of every row are black (regardless of scan direction)
unless masked out by setting the BlkPixelEn bit (bit 6) of the
DVBUSCONFIG2 register (register 0x54h) to a logic 0.
The scan direction can be programmed as follows:
4.1
The default scan direction is to consecutively read out, one pixel
at a time, starting with the left most pixel in the top most row.
Hence, for the example shown in Figure 15, the read out order
will be a0,b0,...,r0 then a1,b1,...,r1 and so on until pixel r10 is
read out. See figure 15.
4.2
The vertical scan direction can be reversed by setting the
“VScanDir” bit in the VSCAN register to a logic 0, while setting
the HScanDir bit in the HSCAN register to a logic 1. In this case
for the example shown in Figure 15, the read out order will be
a10,b10,...,r10 then a9,b9,...,r9 and so on until pixel r0 is read
out.
4.4
The horizontal scan direction can be reversed by setting both
the “HScanDir” bit in the HSCAN and the “VScanDir” bit in the
VSCAN register to a logic 0. In this case for the example shown
in Figure 15, the read out order will be r10,q10,...,a10 then
r9,q9,...,a9 and so on until pixel a0 is read out.
Scan Direction
Default Scan Direction
Reverse Vertical Scan
Direction
Reverse Horizontal Scan
Direction
Reverse Vertical and Hori-
zontal Scan Direction
ARRAY READOUT
Default Scan Direction
Reverse Vertical Scan Direction
Reverse Horizontal Scan Direction
Reversing The Horizontal & Vertical Scan Direction
Figure 15. Progressive Scan Read Out Mode
10
0
1
2
3
4
5
6
7
8
9
a b c d e f g h i j k l m n o p q r
Column/Horizontal
VScanDir
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1
0
1
0
HScanDir
1
1
0
0