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參數資料
| 型號： | ADV7344BSTZ |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | DAC |
| 英文描述： | Multiformat Video Encoder Six 14-Bit Noise Shaped Video DACs |
| 中文描述： | SERIAL INPUT LOADING, 14-BIT DAC, PQFP64 |
| 封裝： | ROHS COMPLIANT, MS-026BCD, LQFP-64 |
| 文件頁數： | 62/88頁 |
| 文件大小： | 1078K |
| 代理商： | ADV7344BSTZ |
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ADV7344
SD ACTIVE VIDEO EDGE CONTROL
Subaddress 0x82, Bit 7
The ADV7344 is able to control fast rising and falling signals at
the start and end of active video in order to minimize ringing.
When the active video edge control feature is enabled
(Subaddress 0x82, Bit 7 = 1), the first three pixels and the last
Rev. 0 | Page 62 of 88
three pixels of the active video on the luma channel are scaled
so that maximum transitions on these pixels are not possible.
At the start of active video, the first three pixels are multiplied
by 1/8, 1/2, and 7/8, respectively. Approaching the end of active
video, the last three pixels are multiplied by 7/8, 1/2, and 1/8,
respectively. All other active video pixels pass through
unprocessed.
100 IRE
0 IRE
100 IRE
87.5 IRE
12.5 IRE
0 IRE
50 IRE
LUMA CHANNEL WITH
ACTIVE VIDEO EDGE
DISABLED
LUMA CHANNEL WITH
ACTIVE VIDEO EDGE
ENABLED
0
Figure 81. Example of Active Video Edge Functionality
VOLTS
0
2
4
F2
L135
6
8
10
12
IRE:FLT
–50
0
0
50
100
0.5
0
Figure 82. Example of Video Output with Subaddress 0x82, Bit 7 = 0
VOLTS
0
2
–2
4
6
8
10
12
F2
L135
IRE:FLT
–50
0
50
100
0
0.5
0
Figure 83. Example of Video Output with Subaddress 0x82, Bit 7 = 1
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