Oasis 4 MOST User Manual

MOST

Media Oriented Systems Transport

Multimedia and Control

Networking Technology

Amplifier 4 MOST

Version: 2.0

User Manual

Document Information:

Version: 2.0-03

Release Date: 2003-07-23

®

*X11293*

Amplifier 4 MOST

User Manual

Intellectual Property

© Copyright 2002 - 2003 OASIS SiliconSystems. Duplication of this document without permission is prohibited. All rights reserved. The information within this document is OASIS - SiliconSystems intellectual property. Please make sure that all Information within a document marked as ‘Confidential’ is handled appropriately. The confidential ranking of a document can be found in the footer of every page.

Trademarks

All trademarks used in this document are proprietary of their respective owners. MOST and OptoLyzer are internationally registered trademarks.

Patents

There are a number of patents and patents pending on the MOST technology. The rights to these patents are not granted without any specific agreement between the users and the patent owners.

Preliminary Product Information

A Preliminary Product Information document describes a product, which is in limited production and subject to change. OASIS SiliconSystems has worked diligently to ensure that the information in this document is accurate and reliable. However, the information in this document is subject to change without notice and is provided "as is" without warranty of any kind (expressed or implied).

Further Information

For more information on OASIS SiliconSystems products, including integrated circuits, software, and MOST development tools and modules, contact one of our offices below, or visit our web site:

www.oasis.com www.oasis.de

OASIS SiliconSystems, Inc. OASIS SiliconSystems AG

1120 South Capital of Texas Highway Bannwaldallee 48 Building 2, Suite 100 D-76185 Karlsruhe Austin, Texas 78746 USA Germany

Fon: (+1) 512 306 8450 Fon: (+49) (0) 721 6 25 37 - 0 Fax: (+1) 512 306 8442 Fax: (+49) (0) 721 6 25 37 - 119

[email protected] [email protected]

OASIS Silicon Systems, Inc. OASIS SiliconSystems KK

38600 Van Dyke Avenue, Suite 220 Shin-Yokohama UU Bld. 5F Sterling Heights, 2-5-2 Shin-Yokohama, Kohoku-ku Michigan 48312-1172 USA Yokohama, 222-0033, Japan

Fon: (+1) 586 795-0545 Fon: (+81) 45-470 2240 Fax: (+1) 586 795-8950 Fax: (+81) 45-470 2242

[email protected] [email protected]

Technical Support

For technical support, please refer to one of the following EMail addresses:

[email protected] [email protected]

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Amplifier 4 MOST

MOST is a registered trademark

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Document History

Version Date Section Comment on changes

2.0-00 2002-09-02 - First version

2.0-03 2003-07-23

1.2 Change delay mem to optional 5 Remove connection comments from harness dwg 8 Replaced with reference to OS88558 User Manual

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Table Of Contents

OVERVIEW .......................................................................................................................................7

1

1.1 Amplifier 4 MOST Contents...........................................................................................................7

1.2 Features.........................................................................................................................................7

1.3 Applications ...................................................................................................................................8

1.4 Reference Data..............................................................................................................................8

1.5 Block Diagram/Typical Application ................................................................................................8

2 FUNCTIONAL DESCRIPTION .........................................................................................................9

3 ELECTRICAL CHARACTERISTICS ............................................................................................. 10

3.1 Operating Conditions.................................................................................................................. 10

3.2 Amplifier Channel Characteristics .............................................................................................. 10

3.3 Microphone Input Characteristics ............................................................................................... 11

3.4 Line Level Input Characteristics ................................................................................................. 11

3.5 Line Level Outputs...................................................................................................................... 12

4 APPLICATION INFORMATION .................................................................................................... 13

4.1 Recommended Equipment ......................................................................................................... 13

4.2 Equipment Setup ........................................................................................................................ 13

4.2.1 Location Of The Connectors ............................................................................................... 13

4.2.2 Power Connections ............................................................................................................. 14

4.2.3 Speaker Connections .......................................................................................................... 14

4.2.4 Line Input Connections........................................................................................................ 14

4.2.5 OptoLyzer4MOST Setup ..................................................................................................... 15

4.2.6 MOST Network Connections............................................................................................... 15

4.3 Basic MOST Network Configuration........................................................................................... 16

4.4 Complete MOST Network Configuration .................................................................................... 18

4.5 S/PDIF MOST Network Configuration ........................................................................................ 20

5 CONNECTOR/CABLE PINOUTS.................................................................................................. 22

6 PHYSICAL DIMENSIONS .............................................................................................................23

7 SOFTWARE CONTROLS (.OCI – FILES) .................................................................................... 25

7.1 Amplifier 4 MOST Control (2V0_MOSTAMP188.oci)................................................................. 25

7.2 MOST Media Player Control (2V0_Media190.oci) ..................................................................... 26

8 FUNCTION BLOCKS..................................................................................................................... 27

9 APPENDIX A: LIST OF FIGURES ................................................................................................ 28

10 APPENDIX B: LIST OF TABLES .............................................................................................. 28

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Conventions

Within this manual, the following abbreviations and symbols are used for improving readability:

Comment

PIN FileName.xxx FunctionName() PointerName

BIT Name of a single bit within a register x..y Range from x to y. Used as abbreviation e.g. for a group of bits like D7..0 [a,b,c] List of alternative elements to choose from. 0xzz Hexadecimal number (value zz) bREG Single byte (8bit) Register wREG Single word register (16bit) mREG Multi byte register (e.g. message buffer) RSVD The respective bit or register is reserved for future use / Inverter x Don’t care

Ç È

DAC ADC DSP DBFS EQ LSB MSB IDS MNS NIC FOT FOR AS FBlock POF

Name of a PIN Name of a file Name of a function Name of a pointer

Rising edge Falling edge

Digital to Analog Converter Analog to Digital Converter Digital Signal Processor Decibels relative to digital full scale Equalizer Least Significant Bit Most Significant Bit Integrated Development System MOST NetServices MOST Network Interface Controller Fiber optical Transceiver (Transmitter & Receiver) Fiber optical receiver Application Services Function Block Plastic Optical Fiber

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1 Overview

This document describes the Amplifier 4 MOST based on the OS88558 Application Specific Media Processor, and how to set it up to play audio from an analog, digital (S/PDIF), or MOST Media player source.

Note:

The core functionality is provided by the integrated circuit of OASIS SiliconSystems. This controller is described in the separate OS88558 user manual.

1.1 Amplifier 4 MOST Contents

The Amplifier 4 MOST includes the following components:

• 1 Amplifier 4 MOST

• 1 speaker cable harness

(Connects “SPEAKERS” socket of the Amplifier 4 MOST to external speakers)

• 1 signal cable harness (Connects “SIGNAL” socket of the Amplifier 4 MOST to the signal inputs and outputs.)

• 1 power cable harness (Connects “POWER” socket of the Amplifier 4 MOST to power supply or battery)

• 1 optical connector (Connects “MOST” socket to a MOST Network Amplifier side: Yazaki 2+0P connector, MOST side: to HP HFBR-4531 connector, 2 orange optical fibers, 2x HP HFBR-4505 fiber-fiber-coupler

• 2 plastic optical fibers with HP HFBR-4531 connectors

• 1 CD containing documentation and .oci files to control the Amplifier 4 MOST.

• 1 user manual

1.2 Features

• OS88558-based single-chip amplifier processor

• Optical MOST Network interface

• Built-in Network Management Software

• Basic audio processing: Volume, fade, tone control

• Graphic equalizer

• Dynamic channel compression / limiting

• 128K external delay memory (optional)

• 8 channel power amplifier for external speakers

• Software updateable over the MOST Network

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1.3 Applications

The Amplifier 4 MOST is recommended for rapid prototyping of automotive systems, demonstration of MOST technology and the integrated circuit OS88558.

1.4 Reference Data

• 110 dB effective dynamic range on channels 1 - 4

• Up to 40 W

• Line outputs for two powered speakers (e.g. powered subwoofer system)

• Automotive environmental specifications met

• Stereo Line inputs

• Microphone input

per channel into eight 2 Ω speakers

rms

1.5 Block Diagram/Typical Application

Figure 1-1: Block diagram of the Amplifier 4 MOST

1) Power amplifier

2) Line output amplifier

3) Differential input

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2 Functional Description

The Amplifier 4 MOST is a demo module that demonstrates the features of the integrated amplifier controller. The Amplifier 4 MOST is implemented using a single OS88558 amplifier controller to do all processing necessary to transport audio information between a MOST Network and external speakers.

The OS88558 amplifier controller includes a MOST Network interface, a microcontroller, 2 DSP’s, 128K of internal FLASH memory, and several A/D and D/A converters. There is a provision for a stereo analog input and also for an electret microphone.

MOST NetServices software is built into this module providing the software services needed to communicate with other MOST devices.

The software built into the Amplifier 4 MOST includes digital signal processing for eight audio streams. In this demo device it is possible to amplify one stereo audio signal (analog or via MOST Network) up to eight external speakers which can be controlled regarding to Volume, Balance, Fading etcetera.

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3 Electrical Characteristics

3.1 Operating Conditions

The Amplifier 4 MOST supports the following operating modes:

“Full on”: Amplifiers provide full amplification “Idle”: Digital circuits operate with amplifiers muted “Sleep”: Fiber optic receiver unit active and waiting for light input

The power supply operates normally while the input voltage is between 10 and 16 Volt DC. The Amplifier 4 MOST will mute on the following fault conditions:

1. Under voltage – input voltage drops below 10 Volt DC

2. Loss of Light – optical input shut off or removed

Operating conditions:

Symbol Description Conditions Min Typ Max Units

V

Operating Supply Voltage Full ON operation 10 14.4 18 V

bat

V

Idle Supply Voltage Idle operation 5 10 V

idle

Iq Idle Supply Current Muted 1 A I

Sleep Supply Current Light off for 1 Min 160 µA

sleep

Ipk Peak Supply Current 40 A

Table 3-1: Operating characteristics

3.2 Amplifier Channel Characteristics

Symbol Description Conditions Min Typ Max Units

P

Output Power

out

R

=4 Ω, THD=10 %

L

R

=2 Ω, THD=10 %

L

THD Volume = 0x40 -85 dB PSRR Power Supply Rejection -60 dB DR Dynamic Range Volume=Max vs

Volume=min+1 Vn(0) Output Noise Volume=0x00 200 µV flo Low frequency cutoff 50 Hz fhi High Frequency cutoff 20 kHz Frequency response From flo to fhi -3 0.5 dB V

Full Scale Output Voltage 8.5 V

ffs

Table 3-2: Amplifier channel characteristics

The amplifiers are short-circuit protected. All tests performed using a 1FFS digital source on the MOST Network, V

= 14.4 Volt DC, sound settings flat, output signal measured at the output

bat

terminals of the Amplifier 4 MOST.

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25 W 40 W

110 dB

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3.3 Microphone Input Characteristics

The microphone input is a differential input with a DC Bias suitable for electret or active microphones.

Microphone input characteristics:

Symbol Description Conditions Min Typ Max Units

V

Microphone Bias Voltage 8.2 V

mbias

I

Microphone Bias Current 5 mA

mic

V

Full Scale Input Voltage 265 mV

mffs

Zin Input Impedance 1 PSRR Power Supply Rejection -60 dB CMRR Common Mode Rejection -45 dB flo Low frequency cutoff 5.3 Hz fhi High Frequency cutoff 4.8 kHz Frequency response From flo to fhi -3 0.5 dB

1)

Table 3-3: Microphone Input characteristics

rms

kΩ

3.4 Line Level Input Characteristics

The Amplifier 4 MOST includes one set of stereo, line-level analog inputs. These inputs can be used as audio inputs to the Amplifier 4 MOST.

Line input characteristics:

Symbol Description Conditions Min Typ Max Units

V

Full Scale Input Voltage 440 mV rms

lffs

Zin Input Impedance 10 PSRR Power Supply Rejection -60 dB CMRR Common Mode Rejection -45 dB SNR Signal to Noise Ratio 85 dB flo Low frequency cutoff 1.6 Hz fhi High Frequency cutoff 20 kHz Frequency response From 20 Hz to 20 kHz -3 0.5 dB

Table 3-4: Line level input characteristics

kΩ

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3.5 Line Level Outputs

The output of the OS88558 PWM DAC’s are passed through a third order active low-pass filter. These outputs are full range. The output buffers are designed to drive long cables.

Line Output characteristics:

Symbol Description Conditions Min Typ Max Units

V

Full Scale Output Voltage 800 mVrms

pffs

Z

Output Impedance 700

out

PSRR Power Supply Rejection -50 dB V(0) Output Noise Volume=0x00 200 µVrms SNR Signal to Noise Ratio 85 dB flo Low frequency cutoff 20 Hz fhi High Frequency cutoff 18 kHz Frequency response From flo to fhi -3 0.5 dB

1)

Ω

Table 3-5: Line level output characteristics

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4 Application Information

4.1 Recommended Equipment

The following sections walk through connection and operation of the Amplifier 4 MOST. It is recommended for these procedures that the following equipment is available:

• Amplifier 4 MOST

• OptoLyzer4MOST Interface Box with software

• 14.4 Volt DC Power supply capable of delivering at least 15 Ampère DC

• Speakers

• An analog audio source (CD player, MP3 player, etc.)

Optionally the following equipment can be used:

• MOST Media Player or MOST DVD-Player

• An S/PDIF audio source (CD player, or PC with S/PDIF optical outputs) streaming audio data via

an OptoLyzer4MOST Interface Box

4.2 Equipment Setup

4.2.1 Location Of The Connectors

MOST Network optical connector Yazaki 2+0P

Power

Figure 4-1: Location of the connectors

Please refer to section 5 on page 22 for detailed Information about the cable harnesses.

Signal connector e.g. analog in, etc.

Rx Tx

Speakers connector for 8 external speakers (2 Ω )

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4.2.2 Power Connections

All components used in this setup, except the PC, are designed to run from a standard car battery. For laboratory use the battery is replaced by a power supply, set to 14.4 Volt DC with at least 15 Ampère of current.

Note:

The Amplifier 4 MOST can draw as much as 40 Ampère when running with maximum output power to all channels.

With the power supply off, connect the 6 Pin female connector to “POWER” on the Amplifier 4 MOST. Connect pins 1-3 to the B+ (+14.4VDC), and pins 4-6 to GND of the supply. Connect the OptoLyzer4MOST Interface Box’s power plug. If a MOST Media Player is used, attach its power cable as well. For convenience all devices may be connected together and plugged into one power supply, or if desired, each component from it’s own supply. Leave the power off for now.

4.2.3 Speaker Connections

Connect the speakers to the Amplifier 4 MOST. Section 5 (Connector/Cable Pinouts) shows the pin out of all connectors on the Amplifier 4 MOST, and its respective cable. If this is the first time using the Amplifier 4 MOST, connect the included speaker cable harness to the Amplifier 4 MOST, and attach the blue and white twisted pair to one speaker, and the green and white twisted pair to another speaker. There are 8 channels of power amplification available. Each channel can drive impedances as low as 2 Ω, however care should be taken to avoid an overall power output greater than 250 W For being able to use the Fader feature, a second pair of speakers must be connected to a pair of outputs labeled “Rear” as shown in section

Note:

For power levels greater than 250 W forced air and / or additional heat-sinking of the Amplifier 4 MOST is recommended.

5.

rms

4.2.4 Line Input Connections

A stereo audio input is available on the Amplifier 4 MOST. This input is recommend for use with external analog sources. These pins are available on “SIGNAL” socket, Pins 3 & 13 for left channel, Pins 4 & 14 for right channel analog input. Attach a suitable connector to these wires and connect to an analog audio source.

.

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4.2.5 OptoLyzer4MOST Setup

Connect a standard serial cable between the OptoLyzer4MOST Interface Box and the computer’s COM port. If the OptoLyzer4MOST was not used before, install the software and associated license codes. Refer to the OptoLyzer4MOST manual for details. Several specific files are included on the Amplifier 4 MOST control disk. It is recommended to copy the directory “\control” from the CD to the hard drive of the PC. The path to this folder will be referenced as “Amp_Control_path” in the application examples (Section be found in this directory as well as a SyntaxTree file (.pbn). These files are to be loaded to the OptoLyzer4MOST Standard or Professional software edition to control the Amplifier 4 MOST via an OptoLyzer4MOST Interface Box connected to the PC using a standard serial RS232 cable connection.

4.2.6 MOST Network Connections

Now make the network connections to form a MOST Network using the optical cables provided. The connector of the orange dual optical cable plugs into “MOST” on the Amplifier 4 MOST (Remove the white socket-protection-cover first). Connect the Rx (left) of the Amplifier 4 MOST to Tx of the OptoLyzer4MOST Interface Box. Connect the Tx (right) of the Amplifier 4 MOST to Rx of the OptoLyzer4MOST Interface Box. If an OptoLyzer4MOST Interface Box version “V5” with Yazaki sockets is used connect the another POF using the provided couplers between the cables.

4.3 to 4.5). The RemoteControl files (.oci) described in section 7 can

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4.3 Basic MOST Network Configuration

Amplifier 4 MOST & OptoLyzer4MOST Interface Box:

Figure 4-2: Basic MOST Network configuration

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In this configuration an analog input signal is played through the Amplifier 4 MOST. The OptoLyzer4MOST and the MOST Network are used only for controlling the Amplifier 4 MOST. The following walk through describes how to play audio through the Amplifier 4 MOST using the OptoLyzer4MOST Standard software. Section RemoteControl used below.

1. Build a MOST Network as shown in

Figure 4-2 and described in section 4.2.

2. Apply power to all the components in the MOST Network, and flip the power switch on the back of the OptoLyzer4MOST Interface Box to ON.

3. Switch on the PC (if its not already running).

4. Press play on the audio source (or make sure there is a proper audio signal at the audio input of the Amplifier 4 MOST).

5. Run the OptoLyzer4MOST Standard software installed on the PC.

6. Go to the OptoLyzer4MOST Standard software’s task-bar and click on the “Mode” button.

7. Under the “Connection Type” tab, select “Master Mode” and click “Accept”.

8. The green lock light of the OptoLyzer4MOST Interface Box should now be lit. If not, check power connections, and check for each MOST TX fiber to be connected to the RX fiber of the other device.

9. Click on the OptoLyzer4MOST Standard software’s “Viewer” button to bring up the OptoViewer Window.

10. Go to the OptoLyzer4MOST Standard software’s task-bar and click on the “Control” button. An “OptoControl” window will open.

11. Click on the button, with the little arrow pointing downwards, to the right of the “Customize” button. Click on “Load Profile” in the menu that pops up.

12. In the “Amp_Control_path” (described in section “2V0_MOSTAMP188.oci” file. Then click the “Open” button. A remote control interface window will be opened in the “OptoControl” window.

13. Click the “Notification” button and verify that 6 Amplifier 4 MOST status messages are displayed in the OptoViewer window. This makes sure that the Amplifier 4 MOST is ready and communicates properly with the OptoLyzer4MOST Interface Box and its software.

14. In the OptoControl 2V0_MOSTAMP188.oci window click “Connect ADC”.

15. In the OptoControl 2V0_MOSTAMP188.oci window click the button “3” under the “Volume” label.

16. In the OptoControl 2V0_MOSTAMP188.oci window click DeMute.

Audio should now be played through the speakers. The volume can be changed in small steps by means of the “Increment” (Arrow up) and “Decrement” (Arrow down) buttons, or in large steps by pressing one of the six volume buttons. While “0” represents the lowest volume level, “5” stands for the maximum volume (caution). If no audio is heard, check the source connections, and make sure that the audio source is playing.

There are a number of buttons on the 2V0_MOSTAMP188.oci control panel. They can be adjusted now freely.

7.1 helps to locate the different buttons of the

4.2.5) select the “oci” subfolder and then the

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4.4 Complete MOST Network Configuration

Amplifier 4 MOST, MOST Media Player & OptoLyzer4MOST Interface Box:

Figure 4-3: Complete MOST Network configuration

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Once the Amplifier 4 MOST is working in the basic MOST Network configuration as described in section Player is used as a digital audio source. Audio data is transported over the MOST Network. The OptoLyzer4MOST Interface Box is used for controlling both, the Amplifier 4 MOST and the MOST Media Player. Section

Audio should now be played through the speakers. The volume can be changed in small steps by means of the “Increment” (Arrow up) and “Decrement” (Arrow down) buttons, or in large steps by pressing one of the six volume buttons. While “0” represents the lowest volume level, “5” stands for the maximum volume (caution). If no audio is heard, check the source connections, and make sure that the audio source is playing.

4.3, it is possible to add a digital audio source. In this configuration example the MOST Media

7 helps to locate the different buttons of the RemoteControls used below.

1. Break the MOST Network described in the basic setup and insert the MOST Media Player using the optical cables supplied as shown in

Figure 4-3.

2. Connect the MOST Media Player power into the DC power supply.

3. Apply power to all the components in the MOST Network, and flip the power switch on the back of the OptoLyzer4MOST Interface Box ON.

4. Switch on the PC and run the OptoLyzer4MOST Standard software installed on it.

5. Go to the OptoLyzer4MOST Standard software’s task-bar and click on the “Mode” button.

6. Under the “Connection Type” tab, select “Master Mode” and click “Accept”.

7. The green lock light of the OptoLyzer4MOST Interface Box should now be lit. If it is not, check power connections, and check for each MOST TX fiber to be connected to the RX fiber of the next device.

8. Click on the OptoLyzer4MOST Standard software’s “Viewer” button to bring up the OptoViewer Window.

9. Go to the OptoLyzer4MOST Standard software’s task-bar and click on the “Control” button. An “OptoControl” window will open.

10. Click on the button, with the little arrow pointing downwards, to the right of the “Customize” button. Click on “Load Profile” in the menu that pops up.

11. In the “Amp_Control_path” (described in section

4.2.5) select the “oci” subfolder and then the “2V0_MOSTAMP188.oci” file. Then click the “Open” button. A remote control interface window will be opened in the “OptoControl” window.

12. Click the “Notification” button and verify that 6 Amplifier 4 MOST status messages are displayed in the OptoViewer window. This makes sure that the Amplifier 4 MOST is ready and communicates properly with the OptoLyzer4MOST Interface Box and its software.

13. Go to the OptoLyzer4MOST Standard software’s task-bar and click on the “Control” button. An “OptoControl” window will open.

14. Click on the button, with the little arrow pointing downwards, to the right of the “Customize” button. Click on “Load Profile” in the menu that pops up.

15. In the “Amp_Control_path” (described in section

4.2.5) select the “oci” subfolder and then the “2V0_Media190.oci” file. Then click the “Open” button. A remote control interface window will be opened in the “OptoControl” window.

16. In the OptoControl 2V0_Media190.oci window click “Allocate”.

17. Insert a CD in the Media player.

18. In the OptoControl 2V0_Media190.oci window click the play button. The MOST Media Player will start sending TimeStatus Messages that can be seen in the “Viewer“ window. This is a normal behavior.

19. In the OptoControl 2V0_MOSTAMP188.oci window click “Connect 00-03”.

20. In the OptoControl 2V0_MOSTAMP188.oci window click the button “3” under the “Volume” label.

21. In the OptoControl 2V0_MOSTAMP188.oci window click DeMute.

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4.5 S/PDIF MOST Network Configuration

Amplifier 4 MOST & OptoLyzer4MOST with S/PDIF source:

Figure 4-4: S/PDIF MOST Network configuration

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In this configuration the OptoLyzer4MOST Interface Box synchronizes the entire MOST Network to an external S/PDIF audio source. The S/PDIF audio data is transported over the MOST Network to the Amplifier 4 MOST. The OptoLyzer4MOST Interface Box is used for controlling the Amplifier 4 MOST. Section

Note:

Many S/PDIF sources will clock in “play” mode only.

Audio should now be played through the speakers. The volume can be changed in small steps by means of the “Increment” (Arrow up) and “Decrement” (Arrow down) buttons, or in large steps by pressing one of the six Volume buttons. While “0” represents the lowest volume level, “5” stands for the maximum volume (caution). If no audio is heard, check the source connections, and make sure that the audio source is playing.

7.1 helps to locate the different buttons of the RemoteControl used below.

1. Begin with the basic MOST Network configuration setup as described in section

4.3.

2. Connect a PCM digital audio source output to the “S/PDIF IN” jack located on the back of the OptoLyzer4MOST Interface Box using a standard TOSLINK cable as shown in

Figure 4-4.

3. Apply power to all the components in the MOST Network, and flip the power switch on the back of the OptoLyzer4MOST Interface Box ON.

4. Press play on the audio source to make sure that a proper S/PDIF signal is provided.

5. Switch on the PC and run the OptoLyzer4MOST Standard software installed on it.

6. Go to the OptoLyzer4MOST Standard software’s task-bar and click on the “Mode” button.

7. Under the “Connection Type” tab, select “S/PDIF Master Mode” and click “Accept”.

8. The green lock light of the OptoLyzer4MOST Interface Box should now be lit. If it is not, check power connections, and check for each MOST TX fiber to be connected to the RX fiber of the other device. Also check to be sure that the S/PDIF source is playing.

9. Click on the OptoLyzer4MOST Standard software’s “Viewer” button to bring up the OptoViewer Window.

10. Go to the OptoLyzer4MOST Standard software’s task-bar and click on the “Control” button. An “OptoControl” window will open.

11. Click on the button, with the little arrow pointing downwards, to the right of the “Customize” button. Click on “Load Profile” in the menu that pops up.

12. In the “Amp_Control_path” (described in section

4.2.5) select the “oci” subfolder and then the “2V0_MOSTAMP188.oci” file. Then click the “Open” button. A remote control interface window will be opened in the “OptoControl” window.

13. Click the “Notification” button and verify that 6 Amplifier 4 MOST status messages are displayed in the OptoViewer window. This makes sure that the Amplifier 4 MOST is ready and communicates properly with the OptoLyzer4MOST Interface Box and its software.

14. Go to the OptoLyzer4MOST Standard software’s task-bar and click on the “Source” button.

15. Select the “Allocation” tab. Under the “S/PDIF Input” label click the “Allocate & Connect” button.

16. In the OptoControl 2V0_MOSTAMP188.oci window click “Connect 00-03”.

17. In the OptoControl 2V0_MOSTAMP188.oci window click the button “3” under the “Volume” label.

18. In the OptoControl 2V0_MOSTAMP188.oci window click DeMute.

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5 Connector/Cable Pinouts

Figure 5-1: Power connector pinouts

Figure 5-2: MOST connector

Figure 5-3: Signal connector pinouts

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Figure 5-4: Speaker connector pinouts

6 Physical Dimensions

Dimensions

Length 8.4252 (214 mm) Width 6.2598 (159 mm) Height 2.0866 (53 mm)

Table 6-1: Overall dimensions

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Note:

All given dimensions are in inches. (1” (inch) = 25,4 mm)

Figure 6-1: Physical dimensions of the Amplifier 4 MOST

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7 Software Controls (.oci – Files)

7.1 Amplifier 4 MOST control (2V0_MOSTAMP188.oci)

The control file 2V0_MOSTAMP188.oci for the Amplifier 4 MOST looks like this:

Set volume in six steps

Incremen

volume

Indicates

Decremen

volume

Mute

DeMute

No effec

Connects MOST Bytes 00-03 to the stereo input

Connects MOST Bytes 04-07 to the stereo in

Installation and usage of this control is described in the configuration examples of section 4.3 up to

4.5.

ut

Figure 7-1: Amplifier 4 MOST control

Connects line input signals to the stereo input

that a shut down is pending

Enables Notification Service

Removes current connection from the stereo input

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7.2 MOST Media Player Control (2V0_Media190.oci)

The control file 2V0_Media190.oci for the MOST Media Player looks like this:

Pause playing Play

Track back

Stop playing

Track forward

Load CD

Allocate 4

Channels

DeAllocate

Channels

Figure 7-2: MOST Media Player control

Eject CD

Installation and usage of this control is described in the configuration example in section

4.4.

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8 Function Blocks

The Amplifier 4 MOST firmware implements all function blocks as defined in the OASIS SiliconSystems IC OS88558 user manual. Features related to EEPROM and delay SRAM are enabled only if these optional devices are detected by the firmware.

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9 Appendix A: List Of Figures

Figure 1-1: Block diagram of the Amplifier 4 MOST................................................................................ 8

Figure 4-1: Location of the connectors.................................................................................................. 13

Figure 4-2: Basic MOST Network Configuration ................................................................................... 16

Figure 4-3: Complete MOST Network Configuration ............................................................................ 18

Figure 4-4: S/PDIF MOST Network Configuration ................................................................................ 20

Figure 5-1: Cable pinouts ...................................................................................................................... 22

Figure 6-1: Physical dimensions of the Amplifier 4 MOST.................................................................... 24

Figure 7-1: Amplifier 4 MOST control.................................................................................................... 25

Figure 7-2: MOST Media Player control................................................................................................ 26

10 Appendix B: List Of Tables

Table 3-1: Operating characteristics ..................................................................................................... 10

Table 3-2: Amplifier channel characteristics.......................................................................................... 10

Table 3-3: Microphone Input characteristics ......................................................................................... 11

Table 3-4: Line level input characteristics ............................................................................................. 11

Table 3-5: Line level output characteristics ........................................................................................... 12

Table 6-1: Overall dimensions............................................................................................................... 23

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