CL-GD6215 Datasheet: Single DRAM LCD/VGA Controllers





CL-GD6215 Single DRAM LCD/VGA Controllers Datasheet

Part Number CL-GD6215
Description Single DRAM LCD/VGA Controllers
Manufacture Cirrus Logic
Total Page 30 Pages
PDF Download Download CL-GD6215 Datasheet PDF

Features: CL-GD62XX www.DataSheet4U.com ® Preli minary Data Book FEATURES s IBM®_VGA hardware-compatible s Integrated RAMDAC ™ s Integrated programmable frequency synthesizer — 65 MHz at 5.0V; 40 MHz at 3.3V Single DRAM LCD/VGA Controlle rs for Monochrome/ Color Notebook Compu ters OVERVIEW The CL-GD62XX (CL-GD6205/ ’6215/’6225/’6235) family of adva nced single-chip flat panel VGA contro llers are designed for use in portable systems with stringent power consumptio n and form-factor requirements. Product family pin compatibility provides easy upgrade capability to color or higher- performance systems. Integration of the frequency synthesizer, RAMDAC, monochr ome and color STN/TFT panel interfaces minimizes the form-factor requirement f or color and monochrome graphics subsys tems. All necessary panelpower sequenci ng logic has been integrated into the C L-GD62XX family, and a complete graphic s subsystem can be built using only two active components (in less than three square inches). The CL-GD62XX family u.

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CL-GD62XXwww.DataSheet4U.com
® Preliminary Data Book
FEATURES
s IBM®_VGA hardware-compatible
s Integrated RAMDAC
s Integrated programmable frequency synthesizer
— 65 MHz at 5.0V; 40 MHz at 3.3V
s Supports single 256K x 16 DRAM configuration
— Symmetric or asymmetric RAS/CAS-address DRAM
s Color STN panel support (CL-GD6225/’6235 only)
— Dual-scan color STN panel support (CL-GD6235 only)
— 8- and 16-bit interfaces (no extra components required)
— Up to 256 simultaneous colors from a palette of 256K
s Integrates color TFT panel support
— Supports 9-, 12-, 15-, and 18-bit TFT panels
— Up to 256 simultaneous colors from a palette of 256K
s Connects directly to local bus, ISA bus (PC AT) or PI
bus (CL-GD6205 connects to ISA bus only)
s Windows performance-improvement features
— True packed-pixel addressing
— Improved data latches for block moves
— Color expansion for 8 bits-per-pixel graphics
— 32 x 32 hardware cursor (2 bits-per-pixel)
s Supports 3.3V and 5.0V mixed-voltage operation
s Standby and Suspend modes save power
— Internal timers for backlight control and Standby mode
— Dedicated Hardware-suspend Mode pin
— 32-kHz DRAM refresh clock in Suspend mode
s Frame-Accelerator for low-active power
— No additional DRAMs required
— Supports self-refresh DRAMs
s Simultaneous CRT and LCD (SimulSCAN) operation
(cont.)
Single DRAM LCD/VGA
Controllers for Monochrome/
Color Notebook Computers
OVERVIEW
The CL-GD62XX (CL-GD6205/’6215/’6225/’6235) fam-
ily of advanced single-chip flat panel VGA controllers are
designed for use in portable systems with stringent
power consumption and form-factor requirements.
Product family pin compatibility provides easy upgrade
capability to color or higher-performance systems.
Integration of the frequency synthesizer, RAMDAC,
monochrome and color STN/TFT panel interfaces mini-
mizes the form-factor requirement for color and mono-
chrome graphics subsystems. All necessary panel-
power sequencing logic has been integrated into the
CL-GD62XX family, and a complete graphics subsystem
can be built using only two active components (in less
than three square inches).
The CL-GD62XX family uses a single 256K x 16 DRAM
(or four 256K x 4 DRAMs) for video memory. For added
flexibility, dual-CAS*-DRAM and dual-WE*-DRAM con-
figurations are supported.
With integrated Frame-Accelerator technology, the
CL-GD62XX controllers feature low-power LCD opera-
tion, yet support high LCD panel vertical-refresh rates.
No additional DRAMs are required for frame
(cont.)
Functional
Block Diagram
3.3V
3.3V or 5V
256K x 16
DRAM
3.3V or 5V
CL-GD62XX
160-Pin PQFP
3.3V
or
5V
3.3V
or
5V
5
4
3
2
1
0
ANALOG CRT
5
4
3
2
1
0
REFERENCE FREQUENCY
MONOCHROME OR
COLOR LCD PANEL
October 1993
Thi d
d ihF M k 404

                    
                    






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