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ADV473KP135 Datasheet(PDF) 1 Page - Analog Devices |
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ADV473KP135 Datasheet(HTML) 1 Page - Analog Devices |
1 / 12 page REV. A Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. a CMOS 135 MHz True-Color Graphics Triple 8-Bit Video RAM-DAC ADV473 MODES 24-Bit True Color 8-Bit Pseudo Color 15-Bit True Color 8-Bit True Color SPEED GRADES 135 MHz, 110 MHz 80 MHz, 66 MHz GENERAL DESCRIPTION The ADV473 is a complete analog output, Video RAM-DAC on a single CMOS monolithic chip. The part is specifically designed for true-color computer graphics systems. The ADV473 integrates a number of graphic functions onto one device allowing 24-bit direct true-color operation at the maxi- mum screen update rate of 135 MHz. It can also be used in other modes, including 15-bit true color and 8-bit pseudo or in- dexed color. The ADV473 is fully PS/2 and VGA register level compatible. It is also capable of implementing IBM’s XGA standard. (Continued on page 4) FEATURES ADV478/ADV471 (ADV®) Register Level Compatible IBM PS/2,* VGA*/XGA* Compatible 135 MHz Pipelined Operation Triple 8-Bit D/A Converters Triple 256 8 (256 24) Color Palette RAM Three 15 8 Overlay Registers On-Board Voltage Reference RS-343A/RS-170 Compatible Analog Outputs TTL Compatible Digital Inputs and Outputs Sync on All Three Channels Programmable Pedestal (0 or 7.5 IRE) Standard MPU l/O Interface +5 V CMOS Monolithic Construction 68-Pin PLCC Package APPLICATIONS High Resolution Color Graphics True-Color Visualization CAE/CAD/CAM Image Processing Desktop Publishing FUNCTIONAL BLOCK DIAGRAM SWITCHING MATRIX & PIXEL MASK D A C P O R T P I X E L P O R T MODE CONTROL REGISTERS PIXEL MASK REGISTERS RED REG GREEN REG BLUE REG ADDRESS REG D0–D7 V REFIN SYNC BLANK RED GREEN BLUE 8 COLOR PALETTE/ OVERLAY PALETTE SWITCHER CLOCK ADV473 RS0 RS1 RS2 RD WR S0 S1 OL0 OL3 R0 R7 G0 G7 B0 B7 V REFOUT OPA IOR IOB CR0 CR1 CR2 CR3 MPU PORT MPU & PIXEL PORT CONTROL LOGIC OVERLAYS 4 IOG 8 8 8 VOLTAGE REFERENCE GENERATOR VOLTAGE REFERENCE CONTROL CIRCUIT 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 PALETTE COLOR RED 256 x 8 RAM GREEN 256 x 8 RAM BLUE 256 x 8 RAM OVERLAY PALETTE 15 x 8 RAM 15 x 8 RAM 15 x 8 RAM 8 8 8 GREEN DAC BLUE DAC RED DAC ADV is a registered trademark of Analog Devices Inc. *Personal System/2 and VGA are trademarks of International Business Machines Corp. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 617/329-4700 Fax: 617/326-8703 |
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