CL-GD6225--65QC-A Cirrus Logic, Inc., CL-GD6225--65QC-A Datasheet

CL-GD6225--65QC-A

Manufacturer Part Number

CL-GD6225--65QC-A

Description

Manufacturer

Cirrus Logic, Inc.

Datasheet

1.CL-GD6225--65QC-A.pdf (151 pages)

Specifications of CL-GD6225--65QC-A

Case

QFP

Date_code

93+

Current page: 1 of 151
Download datasheet (2Mb)

FEATURES

Functional

Block Diagram

IBM

Integrated RAMDAC

Integrated programmable frequency synthesizer

— 65 MHz at 5.0V; 40 MHz at 3.3V

Supports single 256K x 16 DRAM conﬁguration

— Symmetric or asymmetric RAS/CAS-address DRAM

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

Integrates color TFT panel support

— Supports 9-, 12-, 15-, and 18-bit TFT panels

— Up to 256 simultaneous colors from a palette of 256K

Connects directly to local bus, ISA bus (PC AT) or PI

bus (CL-GD6205 connects to ISA bus only)

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)

Supports 3.3V and 5.0V mixed-voltage operation

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

Frame-Accelerator for low-active power

— No additional DRAMs required

— Supports self-refresh DRAMs

Simultaneous CRT and LCD (SimulSCAN ) operation

VGA hardware-compatible

REFERENCE FREQUENCY

Thi d

3.3V or 5V

3.3V

(cont.)

CL-GD62XX

160-Pin PQFP

256K x 16

3.3V or 5V

d i h F

DRAM

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.

N o a d d i t i o n a l D R A M s a r e r e q u i r e d f o r f r a m e

Controllers for Monochrome/

Color Notebook Computers

M k 4 0 4

Single DRAM LCD/VGA

3.3V

CL-GD62XX

Preliminary Data Book

COLOR LCD PANEL

MONOCHROME OR

ANALOG CRT

October 1993

(cont.)

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