kac-9637 ETC-unknow, kac-9637 Datasheet - Page 15

• Manufacturer Part Number: kac-9637
• Description: Cmos Image Sensor 648 H X 488 V Vga 68 Fps Monochrome Cis
• Manufacturer: ETC-unknow

IMAGE SENSOR SOLUTIONS
6.0
6.1
The frame time is defined as the time it takes to reset every pixel
in the array, integrate the incident light, convert it to digital data
and present it on the digital video port. This is not a concurrent
process and is characterized in a series of events each requiring
a certain amount of time as shown in Figure 17.
The following factors effect frame rate, exposure & signal level,
the:
• frequency of Hclk
• size of the “Active Window”
• subsampling mode
• programmed row delay
• programmed frame delay.
The following factor effects signal level only.
• analog gain
The following factor effects exposure & signal level:
• integration time
This section describes how to program the frame rate and expo-
sure time.
Functional Description
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FRAME RATE & EXPOSURE CONTROL
Introduction
Figure 17. Frame Readout Flow Diagram
Yes
Transfer all pixels to CDS
Shift all pixels out of row
Reset all pixels in row
Frame delay time
Row address = 0
Row delay time
Row address + 1
Last row?
Start
(continued)
No
15
6.2
A programmable analog gain amplifier is provided, allowing the
gain level of the in-comming pixels to be adjusted before the
analog to digital conversion.
16dB of gain programmable in 128 steps of 0.125dB, (see the
PGA register). Note: Set register 0x4Ah to 0x00h when using
monochrome mode
Analog Gain
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