KS2508

Preliminary KS2508 OSD PROCESSOR FOR MONITOR OVERVIEW The KS2508 is used to display some characters or symbols on a screen of monitor. Basically, the operation is to control the internal memory on chip and generate the R,G,B signals for some characters or symbols. The R,G,B signals are synchronized with the horizontal sync. Then the R,G,B signals are mixed with the main video signal in the Video Amp IC. The font data for characters or symbols are stored in the internal ROM. This stored data are accessed and controlled by the control data from a micro controller. The control data are transmitted through the I2C bus. All timing control signals including the system clock are synchronized with the horizontal sync. Therefore there is a PLL circuitry on chip. 16-DIP-300 FEATURES 256 ROM fonts (Each font consists of 12 x 18 dots.) Full Screen Memory Architecture Wide range PLL available (15 kHz ~ 120 kHz) Programmable vertical height of character Programmable vertical and horizontal positioning Character color selection up to 16 different colors Programmable background color (Up to 16 colors) Character blinking, bordering and shadowing Color blinking Character scrolling Fade-in and fade-out Box drawing Character sizing up to four times 96 MHz pixel frequency from on-chip PLL IIC Protocol Data Transmission (Slave Address : BAH) ORDERING INFORMATION Device Package Operating Temperature 0°C ~ 70°C KS2508 16-DIP-300 1 Preliminary KS2508 OSD PROCES...