参数资料
型号: ADV7311KST
厂商: Analog Devices Inc
文件页数: 50/84页
文件大小: 0K
描述: IC VID ENC 6-12BIT DAC'S 64LQFP
产品变化通告: ADV7xxx Obsolescence 16/Jan/2012
标准包装: 1
类型: 视频编码器
应用: DVD,SD/HD
电压 - 电源,模拟: 2.5V
电压 - 电源,数字: 2.5V
安装类型: 表面贴装
封装/外壳: 64-LQFP
供应商设备封装: 64-LQFP(14x14)
包装: 托盘
REV. A
–54–
ADV7310/ADV7311
SD ACTIVE VIDEO EDGE
[Subaddress 42h, Bit 7]
When the active video edge is enabled, the first three pixels and
the last three pixels of the active video on the luma channel are
scaled in such a way that maximum transitions on these pixels
are not possible. The scaling factors are
×1/8, ×1/2, and × 7/8.
All other active video passes through unprocessed.
SAV/EAV Step Edge Control
The ADV7310/ADV7311 has the capability of controlling fast
rising and falling signals at the start and end of active video to
minimize ringing.
An algorithm monitors SAV and EAV and governs when the
edges are too fast. The result will be reduced ringing at the start
and end of active video for fast transitions.
Subaddress 0x42, Bit 7 = 1 enables this feature.
100 IRE
0 IRE
100 IRE
12.5 IRE
87.5 IRE
0 IRE
50 IRE
LUMA CHANNEL WITH
ACTIVE VIDEO EDGE
DISABLED
LUMA CHANNEL WITH
ACTIVE VIDEO EDGE
ENABLED
Figure 52. Example of Active Video Edge Functionality
VOLTS
024
F2
L135
68
10
12
IRE:FLT
–50
0
50
100
0.5
Figure 53. Address 0x42, Bit 7 = 0
VOLTS
02
–2
4
6
8
10
12
F2
L135
IRE:FLT
–50
0
50
100
0
0.5
Figure 54. Address 0x42, Bit 7 = 1
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