SONY INTRODUCES FIREWIRE
HIGH-SPEED SERIAL BUS IEEE1394 LSI
Facilitates Connection of Computers with Digital AV Products
SAN JOSE, November 8, 1995 -- Sony Semiconductor Company of America today announced the introduction of two
LSIs: a LINK-LSI "CXD1940R" for digital VCR use and a PHY-LSI, "CXD1944R," both incorporating the
High-Speed Serial Bus IEEE 1394 LSI. Sample shipments will begin in April 1996. The LSIs being introduced today are
based on a license from and joint development work with Apple Computer, a world leader in personal computing.
| Model Name |
Sample Delivery |
Sample Price |
IEEE1394 LINK-LSI
CXD1940R |
April 1996 |
US$30 |
IEEE1394 PHY-LSI
CXD1944R |
April 1996 |
US$20 |
IEEE 1394 is a high-speed serial bus standard that allows computers, digital AV equipment and multimedia peripheral
equipment to be easily connected via cables. The current standard has a data transfer rate of up to 400Mbps, with the
possibility for further increases in the future. For optimum benefit to consumers, the IEEE 1394 standard has such
features as isochronous data transfer, "Plug and Play" for immediate connection and function, and "Hot
Plug In" to add or remove devices even when the power is on and without the need to restart the host. In addition,
the IEEE 1394 serial bus does not require a computer when used for digital AV equipment.
"Sony chose Apple's FireWire implementation of IEEE 1394 as the basis for this new family of LSIs because of such
merits as a high-speed transfer rate, real time data processing, simple connections and low cost," commented Jean
Pierre Lassaude, vice president semiconductor marketing, Sony Semiconductor Company of America.
"The IEEE 1394 standard makes it practical to put a digital interface on consumer products. Products from Sony and
Apple using this standard will help people communicate the beauty of nature and the art of man with the integrity of
the senses only possible through digital recording," said Jonathan Zar, Senior Business Development Manager, Apple
Computer.
In addition to the FireWire implementation of IEEE 1394, both LSIs that Sony is introducing today have circuitry to
support AV-Protocol, making it easy to connect to digital VCRs as well as future digital AV products that have the
IEEE 1394.
The LSIs will be sold to outside companies and be incorporated into Sony-brand computer input digital cameras, digital
video camcorders and multimedia peripheral equipment. The LSIs will be displayed at Comdex 95, to be held in Las Vegas,
Nevada, on November 13, l995.
Product Features and Specifications
CXD1940R
Main features
- High-Speed Serial Bus IEEE 1394 LINK Layer LSI
- Individual system port for Isochronous / Asynchronous
- Large-capacity FIFO
Isochronous FIFO: 720 words x 32 bits
Asynchronous Transmit FIFO: 36 words x 33 bits
Asynchronous Receive FIFO: 30 words x 33 bits
- AV-Protocol support
Main specifications
Power consumption: 3.3V+/-0.3V
Package: 100 pin LQFP
Frequency:
TRCK: 18.2MHz
NCLK: 24.576MHz
SCLK: 49.152MHz
CXD1944R
Main features
- High-Speed Serial Bus IEEE 1394 PHY Layer LSI
- Three-port IEEE 1394 port
- 100/200 Mbps bus transfer
- Internal oscillator for clock generator
- Speed signaling
- Automatic detection of port connections
Main specifications
Power consumption: 3.3V+/-0.3V
Package: 64 pin LQFP
Transfer frequency: 98.304/196.608 MHz
IEEE 1394 main specifications
Data transfer rate: 100M / 200M / 400Mbps
Available Nodes: 63
Node Interval: 4-5m
Data size per packet: 512 bytes (at a 100Mbps data transfer rate)
Number of signal lines: 6 (four signal lines, two power source lines)
Data Encoding: DS Link (data/strobe)
Address Space: IEEE 1212 Control & Status Register Standard
Key Features: isochronous, peer-to-peer, open standard
Sony Semiconductor Company of America is part of Sony Electronics Inc. The company is a leading OEM supplier of
semiconductors, including Static RAM, CCD, D/A and A/D converters, TV and audio ICs, digital filters, serial/optical
communication ICs, cellular/PCS ICs and multimedia devices. The company's discrete components include laser diodes,
variable capacitance diodes, and GaAs FET devices.
*FireWire is a registered trademark of Apple Computer, Inc.
Customer contact:
Please contact your local
area sales representative
for customer support.
