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KS2508 - OSD PROCESSOR

Datasheet Summary

Description

Table 1.

Pin Descriptions Pin No.

1 2 3 Signal VSS_A VCO_IN VREF1 Active I/O Input Input Ground (Analog Part) This voltage is generated at the external loop filter and goes into the input stage of the VCO.

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 a.

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Datasheet Details

Part number KS2508
Manufacturer Samsung semiconductor
File Size 224.90 KB
Description OSD PROCESSOR
Datasheet download datasheet KS2508 Datasheet
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Full PDF Text Transcription

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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.
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