1START POLARITY (CLAMP AND BLANK REGI" />
參數(shù)資料
型號: AD9992BBCZ
廠商: Analog Devices Inc
文件頁數(shù): 13/92頁
文件大?。?/td> 0K
描述: IC CCD SGNL PROC 12BIT 105CSPBGA
產(chǎn)品變化通告: AD9992 Discontinuation 22/Feb/2012
標(biāo)準(zhǔn)包裝: 1
類型: CCD 信號處理器,12 位
輸入類型: 邏輯
輸出類型: 邏輯
接口: 3 線串口
電流 - 電源: 27mA
安裝類型: 表面貼裝
封裝/外殼: 105-LFBGA,CSPBGA
供應(yīng)商設(shè)備封裝: 105-CSPBGA(8x8)
包裝: 托盤
AD9992
Rev. C | Page 20 of 92
3
2
1
HD
CLPOB
PBLK
PROGRAMMABLE SETTINGS:
1START POLARITY (CLAMP AND BLANK REGION ARE ACTIVE LOW).
2FIRST TOGGLE POSITION.
3SECOND TOGGLE POSITION.
ACTIVE
05
89
1-
02
2
Figure 22. Clamp and Preblank Pulse Placement
NO CLPOB SIGNAL
FOR LINE 600
VD
HD
NO CLPOB SIGNAL
FOR LINES 6 TO 8
CLPMASKSTART1 = 6
CLPMASKEND1 = 8
0
1
2
597 598
CLPMASKSTART2 = CLPMASKEND2 = 600
CLPOB
05
89
1-
0
23
Figure 23. CLPOB Masking Example
Individual HBLK Patterns
The HBLK programmable timing shown in Figure 24 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 are
separate masking polarity controls for H1, H2, and HL that
designate the polarity of the horizontal clock signals during
the blanking period. Setting HBLKMASK_H1 high sets H1, and
therefore H3, H5, and H7, low during the blanking, as shown in
Figure 25. As with the CLPOB and PBLK signals, HBLK
registers are available in each V-sequence, allowing different
blanking signals to be used with different vertical timing
sequences.
The AD9992 supports three modes of HBLK operation. HBLK
Mode 0 supports basic operation and some support for special
HBLK patterns. HBLK Mode 1 supports pixel mixing HBLK
operation. HBLK Mode 2 supports advanced HBLK operation.
The following sections describe each mode in detail. Register
parameters are described in detail in Table 11.
HBLK Mode 0 Operation
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 can be
used to generate special HBLK patterns, as shown in Figure 26.
The pattern in this example uses all six toggle positions to
generate two extra groups of pulses during the HBLK interval.
By changing the toggle positions, different patterns can be
created.
Separate toggle positions are available for even and odd lines. If
alternation is not needed, the same values should be loaded into
the registers for even (HBLKTOGE) and odd (HBLKTOGO) lines.
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