kac-9638 ETC-unknow, kac-9638 Datasheet - Page 15

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

IMAGE SENSOR SOLUTIONS
Functional Description
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 24.
The following factors affect frame rate, exposure and 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:
• programmed partial frame integration time
This section describes how to program the frame rate and expo-
sure time.
KAC-9638
www.kodak.com/go/imagers 585-722-4385
FRAME RATE & EXPOSURE CONTROL
Introduction
Figure 24. 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-coming pixels to be adjusted before the ana-
log to digital conversion.
16dB of gain programmable in 128 steps of 0.125dB, (see the
PGA register). See Figure 25 for graph of linear gain factor vs.
pga register setting. Note: Set register 0x4Ah to 0x00h when
using monochrome sensor.
A further 5.6dB of gain can be added by setting the LowLight bit
in the OPCTL register to a logic 1.
Analog Gain
Email:[e-mail]