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Oasis SiliconSystems AG
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GERMANY
Tel: +49 (0) 7 21 6 25 37 - 0
Fax: +49 (0) 7 21 6 25 37 - 1 19
E-mail: OSS@oasis.de
Oasis SiliconSystems, Inc.
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Building 2, Suite 100
Austin, Texas 78746, USA
Tel: +1 (512) 306 8450
Fax: +1 (512) 306 8442
E-mail:
OSS@oasis.com
Oasis SiliconSystems, Inc.
38600 Van Dyke Avenue
Suite 220, Sterling Heights,
Michigan 48312-1172, USA
Tel: +1 (586) 7 95 05 45
Fax: +1 (586) 7 95 89 50
E-mail: Detroit@oasis.com
Oasis SiliconSystems KK
Shin-Yokohama UU Bld. 5F
2-5-2 Shin-Yokohama, Kohoku-ku
Yokohama, 222-0033, JAPAN
Tel: +81-45-470-2240
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E-mail: Japan@oasis.com
OS8805 Advanced System on a Chip
Configurable Signal Processing Platform
Features
MOST Core for Optical
Networking
Programmable 16-bit Host Control-
ler with 128k Flash Memory and 4k
Data RAM
Two Programmable
Fixed-Point DSPs
DSP Asynchronous Source Ports
Flexible Inter-Processor
Communications
Expanded GPIO
Four-Channel High Quality
Audio DAC
Stereo Audio ADC
Microphone ADC
Dual USART
MPX ADC for Radio Function
Built-in DC Measurement ADC
Standard 128-pin MQFP Package
Description
The OS8805 is a highly integrated
media processing system with on-chip
Flash program memory, and a full-
featured interface to the multimedia
MOST Network. The MOST Network
interface provides communication with
the Network, and control of other equip-
ment in the network. The OS8805 oper-
ates in a 3.3 V environment with a tem-
perature range of 40C to +85 C.
The OS8805 is a configurable media pro-
cessing system with built-in peripherals
making it ideal for radio, amplifier, or ac-
tive speaker systems. Proprietary sound
processing algorithms can be imple-
mented with the embedded DSPs.
On-chip stereo ADCs accept audio
inputs from existing sources such as
AM-FM radio or other analog sources.
Four channels of high-fidelity audio
DACs provide analog outputs for passive
speakers. The MPX ADC is suitable for
implementation of various radio standards. DSP0 also
controls two PWM DACs which can support high-
efficiency sub-woofer applications or a volume control
for low-power applications.
OS8805 Advanced System on a Chip
Configurable Signal Processing Platform with MOST
Network Interface
The Multimedia Platform
The OS8805 is a flexible hardware platform that can be
configurated for a wide variety of signal processing sys-
tem solutions.
Several versions for different applications are possible:
Active Speaker Controller
Headphone Controller
DVD, DVB Amplifier Controller
CD/MD Interface Controller
Low/mid Amplifier Controller without delay memory
Low/mid Amplifier Controller with delay memory
AM/FM Radio Controller
Video Display Controller
Bluetooth Telephone Interface Controller
The OS8805 is a monolithic CMOS integrated circuit,
which combines high-speed micro-controllers and digital
signal processors, with high quality analog circuitry.
The OS8805 has four processors, eleven ADCs and
DACs, and a variety of digital I/O. The Host Controller
has 128k bytes of on-chip Flash Program memory, sup-
porting easy updates during the design process as well
as in the field. The programmable Host Controller and
fixed-point DSPs enable the OS8805 to be a cost-effec-
tive solution for a wide variety of applications.
The MOST core provides a standard interface to the
MOST Network. It generates the timing for all compo-
nents on the chip, allowing the entire chip to operate syn-
chronously to the Network. Even when not connected to
the Network, the MOST core efficiently routes real-time
data between resources, such as the DSPs, Source Ports,
and Source Converters.
All trademarks used in this document are proprietary of their respective owners
PFL_OS8805_1V0-1.pmd
12/02
MOST and OptoLyzer are registered trademarks of Oasis SiliconSystems
2001-2002 Oasis SiliconSystems, all rights reserved
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