SPC8106 S-MOS Systems, SPC8106 Datasheet - Page 54

• Manufacturer Part Number: SPC8106
• Description: LCD/CRT VGA CONTROLLER
• Manufacturer: S-MOS Systems

Hardware Functional Specification
SPC8106
3.0
OVERVIEW DESCRIPTION
The SPC8106 is a 3.3/5 V LCD video controller based on VGA architecture and optimized for driv-
ing a 640x480 LCD panel display. VGA standard mode functionality is supported using standard
IBM VGA parameters. A proprietary 256 x 6 bit gray scale lookup table is provided to allow
remapping of the 64 possible gray shades displayed on a monochrome LCD panel. For color LCD
modes, an internal 256x12 bit VGA-style lookup table is provided (4 bits each of R, G, and B). An
interface to an external RAMDAC is also provided to allow connecting a standard VGA monitor to
the system.
The target markets for this device are small, cost sensitive mixed voltage sub-notebook comput-
ers, or other specialized consumer products where low cost, low power consumption, low compo-
nent count, and the ability to run most VGA software on a 640x480 LCD panel display are the
major design considerations. This chip is intended to operate mainly in planar graphics modes
(e.g. mode 12H), and will display 16 levels of gray, or 64 levels of gray in mode 13h on a mono-
chrome LCD display, or up to 256 colors out of a palette of 4096 colors on a color LCD display.
With an external RAMDAC, standard VGA modes are supported on a CRT display.
SP1-12
411-1.0
S-MOS Systems, Inc. • Tel: [phone] • Fax: [phone] • http://www.smos.com
X12-SP-001-07