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參數(shù)資料
| 型號(hào)： | AD9992BBCZRL |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | 12-Bit CCD Signal Processor with Precision Timing Generator |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PBGA105 |
| 封裝： | 8 X 8 MM, 0.65 MM PITCH, ROHS COMPLIANT, MO-225, CSPBGA-105 |
| 文件頁數(shù)： | 18/92頁 |
| 文件大小： | 718K |
| 代理商： | AD9992BBCZRL |
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AD9992
HORIZONTAL CLAMPING AND BLANKING
The AD9992’s horizontal clamping and blanking pulses are fully
programmable to suit a variety of applications. Individual
control is provided for CLPOB, PBLK, and HBLK in the
different regions of each field. This allows the dark pixel
clamping and blanking patterns to be changed at each stage of
the readout in order to accommodate different image transfer
timing and high speed line shifts.
Rev. 0 | Page 18 of 92
Individual CLPOB and PBLK Patterns
The AFE horizontal timing consists of CLPOB and PBLK, as
shown in Figure 21. These two signals are programmed
independently using the registers in Table 9. The start polarity
for the CLPOB (and PBLK) signal is CLPOBPOL (PBLKPOL),
and the first and second toggle positions of the pulse are
CLPOBTOG1 (PBLKTOG1) and CLPOBTOG2 (PBLKTOG2).
Both signals are active low and should be programmed
accordingly.
A separate pattern for CLPOB and PBLK can be programmed
for each vertical sequence. As described in the Vertical Timing
Generation section, several V-sequences can be created, each
containing a unique pulse pattern for CLPOB and PBLK. Figure 47
shows how the sequence change positions divide the readout field
into different regions. By assigning a different V-sequence to
each region, the CLPOB and PBLK signals can change with
each change in the vertical timing.
CLPOB and PBLK Masking Areas
Additionally, the AD9992 allows the CLPOB and PBLK signals to
be disabled in certain lines in the field without changing any of
the existing CLPOB pattern settings.
To use CLPOB (or PBLK) masking, the CLPMASKSTART
(PBLKMASKSTART) and CLPMASKEND (PBLKMASKEND)
registers are programmed to specify the start and end lines in
the field where the CLPOB (PBLK) patterns are ignored. The
three sets of start and end registers allow up to three CLPOB
(PBLK) masking areas to be created.
The CLPOB and PBLK masking registers are not specific to a
certain V-sequence; they are always active for any existing field
of timing. During operation, to disable the CLPOB masking
feature, these registers must be set to the maximum value of
0x1FFF or a value greater than the programmed VD length.
Note that to disable CLPOB (and PBLK) masking during power-up,
it is recommended to set CLPMASKSTART (PBLKMASKSTART)
to 8191 and CLPMASKEND (PBLKMASKEND) to 0. This
prevents any accidental masking caused by register update events.
Table 9. CLPOB and PBLK Pattern Registers
Register
Length
CLPOBPOL
1b
PBLKPOL
1b
CLPOBTOG1
13b
CLPOBTOG2
13b
PBLKTOG1
13b
PBLKBTOG2
13b
CLPMASKSTART
13b
CLPMASKEND
13b
PBLKMASKSTART
13b
PBLKMASKEND
13b
Range
High/low
High/low
0 to 8191 pixel location
0 to 8191 pixel location
0 to 8191 pixel location
0 to 8191 pixel location
0 to 8191 line location
0 to 8191 line location
0 to 8191 line location
0 to 8191 line location
Description
Starting polarity of CLPOB for each V-sequence.
Starting polarity of PBLK for each V-sequence.
First CLPOB toggle position within line for each V-sequence.
Second CLPOB toggle position within line for each V-sequence.
First PBLK toggle position within line for each V-sequence.
Second PBLK toggle position within line for each V-sequence.
CLPOB masking area—starting line within field (maximum of three areas).
CLPOB masking area—ending line within field (maximum of three areas).
PBLK masking area—starting line within field (maximum of three areas).
PBLK masking area—ending line within field (maximum of three areas).
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| AD9993BBCZ | 功能描述:IC MIXED-SIGNAL FRONT END 196BGA 制造商:analog devices inc. 系列:- 包裝:托盤 零件狀態(tài):在售 類型:ADC，DAC 輸入類型:LVDS 輸出類型:LVDS 接口:SPI 電流 - 電源:- 工作溫度:- 安裝類型:表面貼裝 封裝/外殼:196-LFBGA，CSPBGA 供應(yīng)商器件封裝:196-CSPBGA（12x12） 標(biāo)準(zhǔn)包裝:1 |
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