KB2502 datasheet(21/62 Pages) SAMSUNG

21 / 62 page

KB2502

VIDEO AMP MERGED OSD PROCESSOR FOR MONITORS

Preliminary

MEMORY MAP

The display RAM's address of the row and column number are assigned in order. The display RAM is composed of

4 register groups (character & attribute register, row attribute register, frame control register, and V-AMP control

The display area in the monitor screen is 30 column

× 15 row, so the related character & attribute registers are also

30 column

× 15 row. Each register has a character address and characteristics corresponding to the display

location on the screen, and one register is composed of 16 bits. The lower 9 bits select the font from the 448 ROM

fonts, and the upper 7 bits give font characteristics to the selected font.

The row attribute register takes up the display RAM's 31st column. It provides raster color, raster color intensity,

character color intensity, horizontal & vertical character size, box, border, and shadow features in units of row.

The frame control registers are in the 16th row. It controls OSD's display location, character height, scroll, and

fade-in/out in units of frame.

The V-AMP control registers are also located in the 16th row.

Figure 9. Memory Map of Display Registers

00 01 02 03

00 01

27 28 29

Character & Attribute Registers

(30 x15 Character Display)

Frame Control

Registers

V-AMP Control Registers

Row Attribute

Registers

04 05

0910 11 12 13 14 15 16

V-AMP Test Registers

Row

Test Registers

Row

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