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NT68275 Datasheet

  • NT68275

  • IIC Bus Controlled On-Screen Display

  • 38頁

  • ETC

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NT68275
IIC Bus Controlled On-Screen Display
Features
n
IIC Bus Interface with Slave Address $7A (Transmitter)
& $7B (Receiver)
n
Horizontal Frequency Range: 30KHz ~ 150KHz*
n
Flexible Display Resolution Up to 1524 Dots/Row
n
Internal PLL Generates a Stable and Wide-Ranged
System Clock (120 MHz)*
n
OSD Screen Consist Character Array of 15 Rows by
30 Columns
n
Programmable Vertical and Horizontal Position for
OSD Displaying Center
n
Total of 528* ROM Fonts including 512* Standard &
16 Multi-color ROM Fonts.
n
12 X 18 Dot Matrix Per Character
n
8-Color Selection for Each Character
n
7-Color Selection for Each Character Background
n
Character/Symbol Blinking, Shadowing & Bordering
Display Effect
n
Double Character Height and Width for Each Row
n
Programmable Height of Character/Symbol Display
n
Row To Row Spacing Control to Avoid Expansion
Distortion
n
Four Programmable Windows with Overlapping
Capability and Shadowing Effect
n
Color Setting for Windows鈥?Background and Character
Shadowing & Bordering
n
Fade-In/Out Effect of OSD Screen Display
n
Hsync & Vsync Input Polarity Selectable
General Description
NT68275 is designed for displaying symbols and
characters onto a CRT monitor. Its operation is controlled
by a microcontroller with an IIC bus interface. By sending
proper data and commands to NT68275, it can carry out
the full screen display automatically with the time base
generated by an on-chip PLL circuit. There are many
functions provided by this chip to fully support user
applications, such as: adjustment of the position of OSD
The 鈥?* 鈥?sign denote s that feature different from NT6827.
windows , built-in 512* ROM & 16 multi-color fonts,
variable character height with row-to-row spacing
adjustment, 8 color selections & 7 background color
controls for each character, double height/width controls
for each row, 4 overlapping window available with color &
size controls, size controls for each window shadowing,
color selection for windows鈥?shadowing & character
shadowing/ bordering, fade-in/out display effect, etc.
1
V1.0

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