KS2501 - OSD PROCESSOR FOR MONITORS
Pin No 1 2 Pin Name VSSA VCO_IN 3 VREF1 4 VREF 5 VDDA 6 HFLB 7 SDA 8 SCL 9 PWM 0 10 PWM 1 11 PWM 2 12 PWM 3 13 PWM 4 14 PWM 5 15 PWM 6 16 PWM 7 17 VFLB 18 VSS 19 FBLK 20 B_OUT 21 G_OUT 22 R_OUT 23 INT 24 VDD Active - - Low Low - Table 1.
Pin Description I/O Description - Ground (Analog Part) I
MARCH.
1998 DATA SHEET KS2501 OSD PROCESSOR FOR MONITORS KS2501 OSD PROCESSOR The KS2501 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
KS2501 Features
* Built-in 1 Kbyte SRAM
* 464 ROM fonts (448 standard fonts + 16 Multi-color fonts)
* Full Screen Memory Architecture
* Wide range PLL available (15kHz ~ 120kHz)
* Programmable vertical height of character
* Programmable vertical and horizontal positio
