Geode™ CS9211 Graphics Companion
Flat Panel Display Controller
General Description
The National Semiconductor® Geode™ CS9211 graphics
companion is suitable for systems that use any GX-series
processor (e.g., GX1, GXLV, GXm) along with the
CS5530A I/O companion, also members of the Geode family of products.
s 16- or 24-bit dual-scan color STN (DSTN) support.
s 8- or 16-bit dual-scan monochrome STN (DSTN)
support.
s 8-bit single-scan color STN (SSTN) panel support.
s TFT panel support provided via pass-through mode.
s 9-, 12- or 18-bit TFT support.
s 9+9 or 12+12-bit, 2 pixels per clock TFT panel support.
s Frame rate modulation (FRM) allows up to 32 shades of
ol
e
The typical system connection shows how to connect the
CS9211 with other system components. Note that the
external frame buffer is only required for DSTN panels.
achieved by writing both panel halves simultaneously.
te
The CS9211 converts the digital pixel stream output of the
CS5530A to the digital RGB inputs used by standard single
and dual-scan STN LCD display panels. Support is provided for both color and monochrome dual-scan STN
(DSTN) flat panels up to 1024x768 resolution, and for color
single-scan panels up to 640x480 resolution.
s Fast display refresh rate, up to 120 Hz for DSTN panels,
gray (intensities) for each primary color (R,G,B) with no
loss of spatial resolution.
s Proprietary dithering algorithm allows display of addi-
Features
tional colors for a maximum of 262,144 colors.
s Supports most SVGA DSTN panels and the VESA FPDI
s Programmable control of input and output sync pulse
(Flat Panel Display Interface) Revision 1.0 Specification.
widths, delays, and polarities allows interfaces to many
panel types.
s Directly interfaces to panels; no external drivers needed
s Programmable panel power sequence controls.
bs
(excluding backlight inverter).
s Supports 18-bit color pixel input data stream in 6:6:6
s Built-in memory controller supports either SDRAM or
format, for a maximum display of 262,144 colors.
EDO memory for the DSTN frame buffer.
s Supports up to 65 MHz pixel clock (DOTCLK).
s Configuration via a serial programming interface.
s Supports resolutions up to 1024x768 pixels.
s Low-power, 3.3V operation.
O
s 144-pin LQFP (Low-profile Quad Flat Pack).
Typical System Connection
18
Pixel Data
Pixel Port
Geode™
GX-Series
Processor
Geode™
CS5530A
I/O Companion
Video Port (YUV)
8
Timing Control
18
4
Serial Configuration 4
Panel Data
Geode™
CS9211
Graphics
Companion
16
Data
24
Panel Timing
4
Power Control
3
LCD Panel
(TFT, DSTN,
or SSTN)
21
Address & Control
DRAM/SDRAM
(External Frame Buffer)
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Geode is a trademark of National Semiconductor Corporation.
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© 2000 National Semiconductor Corporation
www.national.com
Geode™ CS9211 Graphics Companion Flat Panel Display Controller
October 2000
Revision 2.1
