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參數(shù)資料
| 型號(hào)： | MC144144P |
| 廠商： | MOTOROLA INC |
| 元件分類： | 顏色信號(hào)轉(zhuǎn)換 |
| 英文描述： | Digital Signal Processors 44-JLCC -55 to 125 |
| 中文描述： | COLOR SIGNAL DECODER, PDIP18 |
| 封裝： | PLASTIC, DIP-18 |
| 文件頁數(shù)： | 24/44頁 |
| 文件大?。?/td> | 565K |
| 代理商： | MC144144P |
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MC144144
24
MOTOROLA
In either case the user can switch to the other set by means
of the appropriate command, GRAPHICS or EXTENDED.
The VIN/INTRO pin serves as the input for a vertical pulse
from the TV receiver when V lock = VIN mode is enabled.
This permits an OSD display even when no video input is
present. If this mode is not required the default state V lock =
VIDEO should be active and this pin will then carry the
INTRO output signal.
OSD Commands
OSD commands are one and two byte commands. They
are used to control the loading of data for OSD display and
their presentation to the screen. Normally OSD display mode
uses 15 TV lines per display row to enhance the OSD pre-
sentation.
The two byte commands enable direct access to any loca-
tion on the display screen. The user may construct displays
of his own choosing by using these commands. Each com-
mand byte pair consists of an instruction byte followed by a
data byte.
In this document one and two byte commands are written
as 1 or 2, two digit Hex values, separated by a comma, within
curly braces. For example, the WRITE CHAR command for
entering the letter A as a single width character would be
shown as {A3,41}. This command would write the letter A to
the current cursor position of the display row being ad-
dressed. Refer to the
Commands and Registers
and
XDS
Data Recovery
sections for further details of the serial com-
munications and the OSD commands.
The one byte commands provide a simple means of creat-
ing OSD displays using preset screen formats built into the
part. These built–in modes provide the user with a simple
way to generate OSD screens. Two preset display modes
are available called POPSET and TEXTSET.
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