DS_S1D2502A01 Datasheet, PDF (20/57 Pages) Samsung semiconductor – VIDEO AMP MERGED OSD PROCESSOR FOR MONITORS

Preliminary
VIDEO AMP MERGED OSD PROCESSOR FOR MONITORS
MEMORY MAP
S1D2502A01
00 01 02
Row 00
Row 01
27 28 29 30
Character & Attribute Registers
(30 x15 Character Display)
Row 12
Row 13
Row 14
Row 15
00 01 02 03 04 05 06 07 08 0910 11 12 13 14 15 16
Frame Control V-AMP Control Registers
Registers
Row Attribute
Registers
V-AMP Test Registers
31
Test Registers
Figure 9. Memory Map of Display Registers
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
register).
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.
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