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參數(shù)資料
| 型號： | SDA9401 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Scan Rate Converter using Embedded DRAM Technology Units |
| 中文描述： | 掃描頻率轉(zhuǎn)換器采用嵌入式DRAM技術(shù)股 |
| 文件頁數(shù)： | 38/69頁 |
| 文件大?。?/td> | 1142K |
| 代理商： | SDA9401 |
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SDA 9401
Micronas
38
Preliminary Data Sheet
The feature can be enabled by the parameter WINDHON/WINDVON. The parameter WINDHST/
WINDVST defines the status of the window (opened or closed). Closed means, that only a constant
value is displayed, opened means, that the full TV is displayed. The parameter WINDHDR/
WINDVDR defines, what can be done with the window (open the window, close the window).
Output write parameter: WINDHST/WINDVST and WINDHDR/WINDVDR
With each enabling of the window function by the WINDHON/WINDVON parameter, the status of
the window will be as defined by the table above, that means the WINDHST/WINDVST parameter is
only once interpreted after enabling the window function. To change afterwards the status from
“window is close” to “window is open” or vice versa only the WINDHDR/WINDVDR has to be
toggled. If for example the status WINDHST/WINDVST=0 and the WINDHDR/WINDVDR=0 the
window is closed and will be open after enabling the feature by setting the parameter WINDHON/
WINDVON=1. To close the window only the parameter WINDHDR/WINDVDR has to be set to 1.
Again to open the window WINDHDR/WINDVDR has to be set to 0.
For example:
After switching on the TV set, the customer should see the window closed and afterwards the
window should be opened. Therefore the WINDHST/WINDVST has to be set to “0”, the WINDHDR/
WINDVDR has to be set to “1” and the WINDHON/WINDVON has to be set to “1”. So the customer
will see first a screen with a colour defined by the I2C parameters YBORDER, UBORDER and
VBORDER. Then the WINDHDR/WINDVDR has to be set to “0”, that means the window will be
open and the customer will see the chosen TV channel.
The speed of closing or opening the window can be defined by the parameter WINDHSP/
WINDVSP. The tables below explain the using of these parameters.
Output write parameter: WINDHSP
WINDHST/
WINDVST
Description
WINDHDR/
WINDVDR
Description
0
0
1
1
Window is closed
Window is closed
Window is opened
Window is opened
0
1
0
1
open the window
window remains closed
window remains open
close the window
windhsp
freerun
mode
locked
mode
time to close/
open (e.g. 720
active pixel,
10ms per output
field)
00
pplop/256
distance/512
~4s
01
pplop/128
distance/256
~2s
10
pplop/64
distance/128
~1s
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