参数资料
型号: AD9991KCPZRL
厂商: Analog Devices Inc
文件页数: 6/60页
文件大小: 0K
描述: IC CCD SIGNAL PROCESSOR 56-LFCSP
产品变化通告: Product Discontinuance 27/Oct/2011
标准包装: 2,500
类型: CCD 信号处理器,10 位
输入类型: 逻辑
输出类型: 逻辑
接口: 3 线串口
安装类型: 表面贴装
封装/外壳: 56-VFQFN 裸露焊盘,CSP
供应商设备封装: 56-LFCSP-VQ(8x8)
包装: 带卷 (TR)
AD9991
–14–
HD
HBLK
PROGRAMMABLE SETTINGS:
1. FIRST TOGGLE POSITION = START OF BLANKING
2. SECOND TOGGLE POSITION = END OF BLANKING
BLANK
12
Figure 10. Horizontal Blanking (HBLK) Pulse Placement
HD
HBLK
THE POLARITY OF H1 DURING BLANKING IS PROGRAMMABLE (H2 IS OPPOSITE POLARITY OF H1).
H1/H3
H2/H4
Figure 11. HBLK Masking Control
HBLK
SPECIAL H-BLANK PATTERN IS CREATED USING MULTIPLE HBLK TOGGLE POSITIONS
H1/H3
H2/H4
TOG1
TOG2
TOG3
TOG4
TOG5
TOG6
Figure 12. Generating Special HBLK Patterns
Generating Special HBLK Patterns
There are six toggle positions available for HBLK. Normally,
only two of the toggle positions are used to generate the standard
HBLK interval. However, the additional toggle positions may be
used to generate special HBLK patterns, as shown in Figure 12.
The pattern in this example uses all six toggle positions to gen-
erate two extra groups of pulses during the HBLK interval. By
changing the toggle positions, different patterns can be created.
Generating HBLK Line Alternation
One further feature of the AD9991 is the ability to alternate dif-
ferent HBLK toggle positions on odd and even lines. This may be
used in conjunction with V-pattern odd/even alternation or on its
own. When a 1 is written to the HBLKALT register, TOG1 and
TOG2 are used on odd lines only, while TOG3–TOG6 are used
on even lines. Writing a 2 to the HBLKALT register gives the
opposite result: TOG1 and TOG2 are used on even lines, while
TOG3–TOG6 are used on odd lines. See the Vertical Timing
Generation, Line Alternation section for more information.
REV. 0
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