参数资料
| 型号： | AD9942BBCZRL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 15/36页 |
| 文件大小： | 0K |
| 描述： | IC PROCESSOR SGNL 14B 100CSPBGA |
| 标准包装： | 2,000 |
| 类型： | CCD 信号处理器，14 位 |
| 应用： | 数码相机 |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 100-LFBGA，CSPBGA |
| 供应商设备封装： | 100-CSBGA（9x9） |
| 包装： | 带卷 (TR) |
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AD9942
Rev. A | Page 22 of 36
CHANNEL A AND CHANNEL B HORIZONTAL CLAMPING AND BLANKING
The AD9942 horizontal clamping and blanking pulses are fully
programmable to suit a variety of applications. Individual
sequences are defined for each signal, which are then organized
into multiple regions during image readout. This allows the
dark pixel clamping and blanking patterns to be changed at
each stage of the readout to accommodate different image
transfer timing and high speed line shifts.
INDIVIDUAL CLPOB AND PBLK SEQUENCES
The AFE horizontal timing consists of CLPOB and PBLK, as
shown in Figure 21. These two signals are independently
programmed using the parameters shown in Table 19. The start
polarity, first toggle position, and second toggle position are
fully programmable for each signal. The CLPOB and PBLK
signals are active low and should be programmed accordingly.
Up to four individual sequences can be created for each signal.
INDIVIDUAL HBLK SEQUENCES
The HBLK programmable timing, shown in Figure 22, is similar
to CLPOB and PBLK. However, there is no start polarity
control. Only the toggle positions are used to designate the start
and stop positions of the blanking period. Additionally, there is
a polarity control, HBLKMASK, which designates the polarity
of the horizontal clock signal H1 during the blanking period.
Setting HBLKMASK high sets H1 low and H2 high during the
blanking, as shown in Figure 23. Up to four individual
sequences are available for HBLK.
Table 19. Channel A and Channel B CLPOB and PBLK Individual Sequence Parameters
Parameter
Length
(Bit)
Range
Description
Polarity
1
High/low
Starting polarity of CLPOB and PBLK pulses for Sequences 0 to 3.
Toggle Position 1
12
0 to 4095 pixel locations
First toggle position within the line for Sequences 0 to 3.
Toggle Position 2
12
0 to 4095 pixel locations
Second toggle position within the line for Sequences 0 to 3.
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