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參數(shù)資料
| 型號： | ADV7314 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Multiformat 216 MHz Video Encoder with Six NSV 14-Bit DACs |
| 中文描述： | 多格式視頻編碼器216兆赫六噪聲整形的14位DAC |
| 文件頁數(shù)： | 35/84頁 |
| 文件大小： | 1069K |
| 代理商： | ADV7314 |
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REV. 0
ADV7314
–35–
TIMING MODES
HD Async Timing Mode
[Subaddress 10h, Bit 3,2]
For any input data that does not conform to the standards
selectable in input mode, Subaddress 01h, asynchronous tim-
ing mode can be used to interface to the ADV7314. Timing
control signals for
HSYNC
,
VSYNC
, and
BLANK
have to be
programmed by the user. Macrovision and programmable
oversampling rates are not available in async timing mode. When
using async mode, the PLL must be turned off [Subaddress
00h, Bit 1 = 1].
Figures 28a and 28b show an example of how to program the
ADV7314 to accept a different high definition standard other
than SMPTE 293M, SMPTE 274M, SMPTE 296M, or
ITU-R BT.1358. The truth table in Table V must be followed
when programming the control signals in async timing mode.
CLK
ACTIVE VIDEO
PROGRAMMABLE
ANALOG
OUTPUT
a
b
c
81
66
66
243
1920
HORIZONTAL SYNC
e
P_HSYNC
P_VSYNC
P_BLANK
SET ADDRESS 10h,
BIT 6 TO 1
d
Figure 28a. Async Timing Mode—Programming Input Control Signals for SMPTE 295M Compatibility
ACTIVE VIDEO
0
1
HORIZONTAL SYNC
a
b
c
d
e
CLK
P_HSYNC
P_VSYNC
P_BLANK
SET ADDRESS 10h,
BIT 6 TO 1
ANALOG OUTPUT
Figure 28b. Async Timing Mode—Programming Input Control Signals for Bilevel Sync Signal
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| ADV7314KST | 制造商:AD 制造商全稱:Analog Devices 功能描述:Multiformat 216 MHz Video Encoder with Six NSV 14-Bit DACs |
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