
OSD PRESSOR FOR MONITOR (PRELIMINARY)
S5D2509
1
PRODUCT SUMMARY
INTRODUCTION
S5D2509 is a stand-alone OSD Processor, which is used to display monitor adjustment or status information as a
certain character or symbol on screen. Its basic operation includes making the R/ G/ B signal for the character or
symbol by controlling the internal memory, synchronizing it with the horizontal flyback signal, and mixing it with
the main video signal in the video AMP IC. The font data for making the character or symbol is stored in the
internal ROM. It is accessed and controlled by the control data, transmitted from the micro controller through the
I
2
C bus. The chip contains internal PLL circuitry, so all timing control signals, including the system clock, are
synchronized with the horizontal flyback signal.
FEATURES
Enough font to support multiple language : 448 Standard Fonts + 16 Multi-Color Fonts
Wide Operating (Horizontal) Frequency Range : 30kHz
120kHz
Four Selectable OSD Resolutions : 640, 800, 1024 and 1280 Dots/ Line
Pixel Frequency provided by On-Chip PLL : 19.2MHz
153.6MHz
General Font Matrix : 12
×
18
Fully Programmable Display Area : 15 Rows
×
30 Columns
Popular MCU Interface : I
2
C Protocol
Built in 1K-byte SRAM
PWM DAC Channels with 8 Bit Resolution : 8EA
Selectable Character Color (Up to 16 Color) : Font basis
Selectable Raster Color (Up to 16 Color) : Font basis
Programmable and Auto-adjustable Vertical Height of Character : Range 18
63
Character Blinking and Shadowing : Font basis
Programmable Symmetrical Row to Row Spacing : Range 0
31
Horizontal Starting Position : 256 different positions (6 dots for each step)
Vertical Starting Position : 256 different positions (4 scan line for each step)
Scrolling : Effect where 1 character line is scrolled up or down
4 Programmable Window Function and Window Priority Control
Selectable Window Shadow Width : H/ V 2, 4, 6 and 8 Dots
Supports Background Video Transparency : Font basis or Window basis
Full White Pattern Generation for Manufacturing Mode
Auto Character Height Control
Full-Screen Display RAM Erasing
OSD Vertical Bouncing Auto-Detecting & Correction