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- From: ssegars@armltd.uucp (Simon Segars)
- Newsgroups: comp.sys.acorn
- Subject: VIDC20 Press Release
- Keywords: VIDC20
- Message-ID: <9400@armltd.uucp>
- Date: 6 Nov 92 09:30:55 GMT
- Distribution: comp
- Organization: Advanced RISC Machines Ltd
- Lines: 93
-
-
- FOR IMMEDIATE RELEASE 28 OCTOBER 1992
- ARM 017
- ARM DISPLAYS NEW GRAPHICS CONTROLLER
- VIDC20 OFFERS HIGH QUALITY SOUND AND VISION FOR MULTIMEDIA
-
- Advanced RISC Machines has announced the VIDC20, a high performance video controller
- that consumes very little power (typically 0.3W) and can directly drive both LCD screens
- and CRT video systems. The design has been produced to meet the needs of a wide range
- of video systems - from power sensitive portable computers through to desktop multimedia
- workstations and from graphics accelerators to games systems. The versatile device includes
- programmable display formats capable of supporting VGA, Super VGA and XGA levels of
- resolution at up to 16 million colours. Other features include a hardware cursor,
- programmable pixel rates and an on-chip sound system.
-
- VIDC20's low power architecture will drive the LCD screen of a portable computer directly,
- whilst preserving battery life, using a patented, 16-level grey scale algorithm to give high
- quality picture rendition. However VIDC20 is also capable of directly driving a colour CRT,
- allowing the same portable computer to use a colour monitor on the desk without
- additional components. The power management techniques ensure that functions not in
- use, such as the video digital to analogue converters (DAC) and sound DACs do not
- consume power. In addition the on-board palette has been segmented so that only one
- eighth is enabled at any one time.
-
- VIDC20 was designed with the needs for higher levels of display resolution in mind. The
- chip can be used to generate 1, 2, 4, 8, 16 and 32-bits/pixel formats at data rates of up to
- 160Mbytes/second. The on-board 8-bit linear DACs gives a total of 16 million possible
- colours at rates of up to 100MHz and drive doubly terminated 75j lines directly. The
- inclusion of an on-chip phase comparator, when used with a voltage controlled oscillator
- (VCO), allows a single reference clock to generate all of the frequencies for any display
- mode. Tudor Brown, ARM's Engineering Manager, commented: "By understanding how
- graphics systems are built we have designed a chip that can be used cost-effectively in a
- wide range of applications."
-
- VIDC20 also supports a hardware cursor in all of its modes - high resolution, interlace and
- LCD. By offering cursor support on-chip the designer benefits from higher performance
- and lower software overhead resulting in a better "look and feel" for the user. The cursor
- is 32 pixels wide, an unlimited number of pixels high and can be displayed in 4 colours
- from its own 28-bit wide palette.
-
- As well as providing a programmable display system the chip also supports two different
- sound systems. An on-chip system incorporates an 8-bit mu-law DAC providing up to eight
- channels of stereo sound. A 32-bit serial sound interface output enables the connection of
- external CD DACs. The on-chip sound system makes the development of powerful yet low
- chip-count X-terminal controllers straightforward. For higher quality multi-media
- applications requiring both sound and vision the design provides a straightforward interface.
-
- The design of a product incorporating both high speed digital and analogue circuitry
- requires a close relationship between the designer and the manufacturer. ARM collaborates
- closely with its semiconductor partners - VLSI Technology Inc. and GEC Plessey
- Semiconductors Ltd - on all phases of the design from specification through to production,
- to ensure the smooth transition from development to volume manufacture.
-
- Jeff Hendy, VLSI's Director of New Business Development, said: "Our close relationship
- with ARM over the past several years has enabled us to offer our customers a unique
- spectrum of solutions based on performance and flexibility. The introduction of the VIDC20
- extends this spectrum of solutions and delivers to our customers not only high graphics
- performance capabilities, but a broad range of graphics options on a single device as well."
-
- The ARM design approach is to make its products available as both packaged parts and as
- ASIC macrocells. VIDC20 was no exception and was designed using a modular approach
- to allow different versions to be created quickly and easily to customer specification. Robin
- Saxby, Managing Director of ARM commented: "Our QuickDesignTM approach using
- functional building blocks allows us to produce our products very quickly and easily, giving
- our customers exactly what they want, when they want it, without the need for a complete
- redesign every time a change is desired. ARM customers can now have the benefits of the
- VIDC20 in a library for inclusion in other ARM circuits."
-
- The VIDC20 is available from VLSI Technology in a 128 pin PQFP package. Budgetary
- pricing for the part is $36 in 1K quantities.
-
- Advanced RISC Machines (ARM) was formed in 1990 by Acorn Computers, Apple
- Computer and VLSI Technology. ARM focuses on high performance, low cost, low power
- consumption 32-bit RISC processors for embedded control, computing, digital single
- processing and portable applications. ARM also designs peripherals, supporting software
- and hardware tools. ARM has licensed its technology to two semiconductor product
- partners, GEC Plessey Semiconductors and VLSI Technology. Both manufacture and sell
- ARM products world-wide; ARM also offers design service, consultancy, feasibility studies,
- training and supply of prototypes.
-
- ***[ENDS]***
-
- ISSUED BY: Ralph Tuckwell, MMC Group plc, Mitchell House, Montem Road, New
- Malden, Surrey KT3 3QW. Tel: (081) 336 1282. Fax: (081) 949 2603.
-
- ON BEHALF OF: Robin Saxby, Advanced RISC Machines Ltd, Swaffham Bulbeck,
- Cambridge CB5 0NA. Tel: (0223) 813000. Fax: (0223) 812800. E-mail address:
- marketing@armltd.co.uk
-
- ************************************************************************************
-
- Simon Segars : ssegars@armltd.co.uk
- Advanced RISC Machines Ltd
-