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1999-04-27
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From: bsalter@acorn.co.uk
Subject: Acorn Press Release (New VIDC)
Date: 6 Nov 92 09:05:23 GMT
Acorn Welcomes New Video Chip
Acorn has welcomed the announcement from Advanced RISC Machines Ltd of
its VIDC20 video controller which has been designed to meet the needs
of a wide range of video systems, from power sensisitive portable
computers through to desktop multimedia workstations.
This versatile controller can display at up to 16 million colours at
VGA, Super VGA or XGA levels of resolution. Its low power architecture
will drive the LCD screen of a portable computer directly whilst
preserving battery life. It can be used to generate up to 32 bits per
pixel at data rates of up to 160MBytes/second.
As well as providing a programmable display system, the chip also has
sophisticated audio support. The device is fully compatible with the
previous VIDC capabilities, providing up to eight channels of stereo
sound. For higher quality multi-media applications requiring both
sound and vision the design provides a straightforward interface to
dedicated sound controllers.
Acorn Computers' Technical Director, Malcolm Bird confirmed that Acorn
was fully involved in the specification for ARM's new graphics
controller with a view to it being used in future products. "The
VIDC20 is one in a new series of high performance chips from ARM Ltd
that keeps the ARM component set at the forefront of cost effective
technology. We are leading the test validation programme for the
device and anticipate including it in future generations of
computers." he said.
Advanced RISC Machines (ARM) Ltd was formed in 1990 as a joint company
by Acorn Computers, Apple Computer and VLSI Technology to design and
implement high performance, low cost RISC processors for use in
computers, embedded control systems, digital processing and portable
applications. ARM has licensed its technology to two semiconductor
product partners - GEC Plessey Semiconductors and VLSI Technology.
Both manufacture and sell ARM products worldwide.
Ends
From: segars@armltd.uucp
Subject: ARM VIDC20 Press Release
Date: 6 Nov 92 12:58:53 GMT
Organization: Acorn Computers Ltd, Cambridge, England
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