参数资料
型号: AD9923ABBCZ
厂商: Analog Devices Inc
文件页数: 14/84页
文件大小: 0K
描述: IC PROCESSOR CCD 12BIT 105CSPBGA
标准包装: 1
类型: CCD 信号处理器,12 位
输入类型: 逻辑
输出类型: 逻辑
接口: 3 线串口
电流 - 电源: 20mA
安装类型: 表面贴装
封装/外壳: 105-LFBGA,CSPBGA
供应商设备封装: 105-CSPBGA(8x8)
包装: 托盘
AD9923A
Rev. A | Page 21 of 84
HD
HBLK
THE POLARITY OF HL/H1/H3 DURING BLANKING ARE INDEPENDENTLY PROGRAMMABLE
(H2/H4 IS OPPOSITE POLARITY OF H1/H3).
HL/H1/H3
H1/H3
H2/H4
...
05
58
6-
0
25
Figure 27. HBLK Masking Polarity Control
HBLK
SPECIAL H-BLANK PATTERN IS CREATED USING MULTIPLE HBLK TOGGLE POSITIONS (HBLKALT = 0).
HL/H1/H3
H2/H4
HBLKTOGE1
HBLKTOGE2
HBLKTOGE3
HBLKTOGE4
HBLKTOGE5
HBLKTOGE6
0
55
86
-0
26
Figure 28. Using Multiple Toggle Positions for HBLK (HBLKALT = 0)
Generating HBLK Line Alternation
The AD9923A can alternate different HBLK toggle positions on
odd and even lines. This feature can be used in conjunction with
V-pattern odd/even alternation, or on its own. When 1 is written
to the HBLKALT register, HBLKTOGE1 and HBLKTOGE2 are
used on odd lines, and HBLKTOGE3 to HBLKTOGE6 are used
on even lines. Writing 2 to the HBLKALT register gives the oppo-
site result: HBLKTOGE1 and HBLKTOGE2 are used on even
lines, and HBLKTOGE3 to HBLKTOGE6 are used on odd lines.
When 3 is written to the HBLKALT register, all six even toggle
positions, HBLKTOGE1 to HBLKTOGE6, are used on even
lines. There are also six additional toggle positions, HBLKTOGO1
to HBLKTOGE6, for odd lines. These registers are normally
used for VPAT Group A, VPAT Group B, and freeze/resume
functions, but when HBLKALT = 3, these registers become the
odd line toggle positions for HBLK.
Another HBLK feature is enabled by writing 4, 5, 6, or 7 to
HBLKALT. In these modes, the HBLK pattern is generated using
a different set of registers—HBLKSTART, HBLKEND, HBLKLEN,
and HBLKREP—along with four toggle positions. This allows
for multiple repeats of the HBLK signal, as shown in Figure 32.
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