17.903 bytes

Service Hints & Tips

Document ID: DJON-3G6HFN

This document is provided to IBM and our Business Partners to help sell and/or service IBM products. It is not to be distributed beyond that audience or used for any other purpose.

Aptiva - The Dolphin Mwave Adapter

Applicable to: World-Wide

The Dolphin Adapter is a bus master adapter which occupies an ISA/AT* slot in IBM compatible PCs, with a 386SX** or later compatible processor. It supports up to a 16-bit data path with 24-bit addressing. Interrupt sharing with other Mwave adapters is also supported.

This reference adapter supports both the IBM38MDSP2780 (MDSP2780) and IBM38 2780PRO (2780PRO) Digital Signal Processors providing Plug-and-Play for Windows 95 environments.

Using the MDSP2780 and 2780PRO, the Dolphin Adapter provides multimedia functions including audio input/output, musical instrument digital interface (MIDI) port, telephony, and industry standard games support.

Audio Functions

The Dolphin Adapter provides the following audio features:
- Stereo line input providing CD quality recording
- Microphone input with gain control for dynamic or electret microphones
- Phantom power support for electret microphones
- Stereo line output with CD quality fidelity
- Personal headset (Mic+earspeaker) connection capability
- Internal connector for internal CDROM audio and a CDROM player controller
- Extensive switching and mixing capabilities for audio inputs and outputs
- An interface to a telephone handset for voice input and output
- An internal Berg connector that can be used to route audio signals to and from a PC front panel assembly or a PC system

Through the use of the audio hardware and DSP software, various levels of audio recording and playback performance can be achieved.

Sample Rate

Sample Size

Frequency Range

Signal/Noise Ratio

Remarks

44.1 KHz

16 bits

20 Hz - 20 KHz

80 dB

CD quality

22.05 KHz

16 bits

20 Hz - 20 KHz

80 dB

< CD quality

11 KHz

16 bits

20 Hz - 20 KHz

80 dB

AM quality

9.6 KHz

14 bits

200 Hz - 4000 Hz

60 dB

Toll quality

8.0 KHz

8 bits

200 Hz - 4000 Hz

60 dB

Toll quality




MIDI

The Dolphin Adapter MIDI implementation provides the basic hardware needed to support one IN port and one OUT port. When coupled with the Mwave System software, this implementation supports the MPU-401 standard where the hardware transmits and receives bytes and generates interrupts but does not perform any further processing of the MIDI protocols. The Dolphin Adapter MIDI port also supports music synthesizer applications.

In addition, the MDSP2780 and 2780PRO supports the MIDI THRU port; however, this port is not provided on the Dolphin Adapter.

Telephony Functions

The Dolphin Adapter, with the associated Mwave Dolphin Reference Design software, provides the following telephony features:
- Interface to local handset for private listening and recording of phone messages
- Industry standard modem support up to 28.8 Kbit/s
- Industry standard FAX support up to 14.4 Kbit/s
- Full-duplex speakerphone support
- Telephone answering machine support
- Provides a wake-up on ring indicator for PC system power-on

The Dolphin Adapter, with appropriate DSP software, can be used to support voice applications which intercept and answer incoming telephone calls, and store messages on fixed disk. The Dolphin Adapter audio output can also be used with a microphone to provide the service of a half-duplex speaker phone, without using the telephone handset. Call progress tones can also be heard through the telephone handset, stereo headphones, or audio output channels, as selected under program control.

The MDSP2780 and 2780PRO subsystem telephony interface, along with the proper DSP code, can provide the following features:
Modem
- Standard asynchronous COM port interface (NS16550A UART compatible) operation
- Bell-103/212A,CCITT-V.21/V.22, v.22bis protocols with data rates from 50 to 2400 bps
- CCITT-V.32 protocols with data rates of 4800, 9600 uncoded, and 9600 bps Trellis coded
- Hayes AT command set compatibility
- Call progress monitor
- Autodial
- DTMF and pulse dialing
- Asynchronous error recovery protocol
- Error correction via Microcom Network Protocol (MNP**) classes 1-4 Data compression via MNP class 5 and V.42bis MNP class 5 for up to 2x data compression

Facsimile (FAX) Modem Functions
- Call progress monitor
- Autodial feature
- Supports a Windows MCI FAX application interface
- Uses a DMA instead of a COM port to reduce interrupt load on the PC
- DTMF and pulse dialing
- G3 transfers
- T.4/T.30 operations
- V.27ter - 2400/4800 bps send/receive
- V.29 - 7200/9600 bps send/receive
- V.17 - 14 400 bps send/receive
- Class 2 FAX modem

Telephone Answering Machine (TAM)
- Automatically answering the phone and responding with a prerecorded message
- Recording a message from the caller
- Playing back messages left by callers to speakers or to local handset
- Recording greeting via the phone set or microphone

Industry Standard Games Support

The Dolphin Adapter provides the following games features:
- Industry standard games hardware compatibility
- Dual joystick interface port
- Telegaming
- Emulation of the following games port modes:
--AdLib
--Sound Blaster 2.0
--Sound Blaster Pro

Rear Bracket Connectors

Table A-1 lists the values for the rear bracket connectors.

Table A-1. Rear Bracket Connectors

Back Panel Connectors

Values

Handset/Wall Jack

Modular Telephone RJ-11 Jack
Pin 1 CO Line 1 - Tip
Pin 2 CO Line 1 - Ring
Pin 3 Handset - Tip
Pin 4 Handset - Ring
Pin 5 Reserved
Pin 6 Reserved

Microphone Input/Personal Headset
(Mic/Headset)

Stereo 3.5 mm 3-conductor mini phone jack

Audio Line Input
(Line In)

Stereo 3.5 mm 3-conductor mini phone jack
Tip Left channel
Ring Right channel
Sleeve Ground

Audio Line Output
(Line Out)

Stereo 3.5 mm 3-conductor mini phone jack
Tip Left channel
Ring Right channel
Sleeve Ground

MIDI/Joystick

DSUB 15 position
Pin 1 +5v
Pin 2 Joystick A - button 1
Pin 3 Joystick A - X wiper
Pin 4 Ground
Pin 5 Ground
Pin 6 Joystick A - Y wiper
Pin 7 Joystick A - button 2
Pin 8 +5v
Pin 9 +5v
Pin 10 Joystick B - button 1
Pin 11 Joystick B - X wiper
Pin 12 MIDI Out
Pin 13 Joystick B - Y wiper
Pin 14 Joystick B - button 2
Pin 15 MIDI In




Internal Card Connectors

The Dolphin Adapter also includes the following internal connectors, which are located on the adapter. Table A-2 lists the internal connectors used on the Dolphin Adapter.

Table A-2. Internal Card Connectors

Internal Card Connectors

Values

CD-ROM audio connector #1 and
CD-ROM audio connector #2

Sound Blaster compatible
Pin 1 Right channel input
Pin 2 Ground
Pin 3 Left channel input
Pin 4 Ground

Internal expansion audio connector
Pin numbering is as follows:
1 2
3 4
5 6
7 8

2x4 berg style male header
Pin 1 Modem CODEC transmit channel audio (rear left out)
Pin 2 No contact (polarity key)
Pin 3 Ground
Pin 4 Voice CODEC transmit channel audio (rear right out)
Pin 5 Expansion line in left
Pin 6 Expansion line in right
Pin 7 Line out left
Pin 8 Line out right

Wake up on ring connector

1x2 Molex 22-23-2021
Pin 1 RING indicate
Pin 2 Ground



Diagnostics Software and Testing

A diagnostics utility has been written to analyze the Dolphin Adapter during manufacturing. The diagnostic program has the following features:
- Able to control a hot-pluggable riser card
- Provides error numbers if a fault is detected â Provides a list of probable faulty components and a list of the error numbers

Documentation for the diagnostics utility is provided in the form of a README file on the diskette with the utility. See this README for error numbers and current information about the utility.

A diagnostics utility called Mwave Quick Test is provided on all Courageous and later systems equipped with an Mwave adapter. This program allows the customer to quickly and accurately check the function of their Mwave adapter. It also provides suggestions for correcting common problems.

Hardware Functional Testbed

Software support is provided to control an external testing box so that the telephone lines can be adequately tested. This testing box is controlled by the riser card and diagnostic software.

Additional external test equipment, such as a total harmonic distortion and noise (THD+N) audio analyzer, may be required for best testing results.

Dolphin Adapter Functional Tests

This section includes functional tests to be performed during the initial bring-up of the Dolphin Adapter and performance tests for components of the Dolphin Adapter.

Initial Bring-Up Tests

Release-level tools and utilities to aid you with initial adapter bring-up are being developed but are not yet generally available. For information about the availability of these tools, see the Mwave forum on the Mwave BBS. Contact your IBM Microelectronics Marketing Representative for access to the BBS.

Function Concurrency

Concurrency means running more than one function on the DSP at the same time.

Scenarios
- 28.8kbps modem & CD audio & wave audio
- 14.kbps modem & 16 voice synth & wave audio
- 14.4kbps modem & MPEG audio & wave audio
- 14.4kbps modem & Mwave DSVD & wave audio
- 14.4kbps & Sound Blaster Pro (DOS)
- 14.4kbps FAX & 16 voice synth & wave audio
- 14.4kbps & FAX & MPEG
- TAM & MPEG audio & wave audio
- TAM & 16 voice synth & wave audio
- 32 voice synth & CD audio & wave audio & special effects
- Sound Blaster Pro (DOS) & QSound
- No two telephone functions can operate together because the current platform only connects to one phone line

Search Keywords

Hint Category

Mwave, Technical Specifications

Date Created

15-04-97

Last Updated

22-01-99

Revision Date

16-06-99

Brand

IBM Aptiva

Product Family

Aptiva

Machine Type

2134, 2144, 2168, 2176

Model

C23; C31; C32; C33; C35; C3X; C53; C55; C5X; C65; C66; C67; C6B; C6D; C6E; C6V; C6X; C6Y; C73; C77; C7X; 6R8; 6R9; 7R0; 7R1; 7R2; 7R3; 7R6; 7R7; 7R9; 8R1; 8R6; 8R8; 9R2; 9R3; 9R4; 9R5; 9R6; F23; F31; F32; F33; F35; F67; F6B; M40; M41; M53; M54; M55; M56; M57; M58; M60; M61; M62; M70; M71; M72; M91; A40; A44; A45; A50; A51; A52; A90; A92; A94; 2R6; 3R5; 4R2; 4R7; 2R9; 3R3; 3R1; 4R8; 3R0; 3R7; 4R0; 4R9; 3R8; 3R9; 4R3; 5R5; C40; C41; C45; C53; C61; M30; M31; M35; M50; M51; M52; M63; A10; A12; A14; 2R0; 2R3; 2R0; 2R3; 2R5; 2R7; 2R8; 3R4; 3R6; 4R1; 5R1; 6R3; C30; C31; C51; C21; 6R6; 132; 142; 152; 154; 162; 163; 172; 182; L15; L16; K25; K26; L33; K33; L43; K43; L35; K35; L45; K45; KU5; L55; K55; L65; K65; L66; K66; U15; U16; U33; U43; U35; U45; U55; U65; U66; X17; X27; X37; X47; Y17; Y27; Y37; Y47; Z17; Z27; Z37; Z47; S55; S65; S64; S74; S75; W37; W47; S20; 932; 9W2; LL5; LL6; L50; L60; K50; K60; LL1; LL2; LL3; LL4; L10; L20; L30; L40; K10; K20; KU6; K30; K40; KU4; X40; Y40; Z40; N50; N51; N60; N61; N71; Y10; Y20; Y30; Z10; Z20; Z30; X10; X20; X30; W30; N30; N40; N41; 352; 354; 355; 356; 357; 362; 363; 364; 372; 374; 381; 382; 384; 392; 442; 443; 447; 449; 454; 6R8; 6R9; 7R0; 7R1; 7R2; 7R3; 7R6; 7R7; 7R9; 8R1; 8R6; 8R8; 9R1; 9R3; 9R4; 9R5; 9R6; C23; C31; C32; C33; C35; C3X; C53; C55; C5X; C65; C66; C67; C6B; C6D; C6E; C6X; C6Y; C6Z; C73; C77; C7X; F23; F31; F32; F33; F35; F67; F6B; H54; H55; H56; H5E; H5F; H64; H65; H6D; H6E; H6F; H7E; H7F; H7G; J33; J35; J3C; J3E; J3K; J3L; J3V; J3W; J3Y; J3Z; JCL; K53; J62; K74; L53; L62; P53; P62; T01; T33; T34; T62; T63; T65; T71; V34; V65; V71; W33; W55; W65; X01; X31; X33; X34; X52; X62; X63; X65; X71; Y01; Y04; Y31; Y33; Y34; Y52; Y62; Y63; Y65; Y71; Z01; Z31; Z33; Z34; Z52; Z62; Z63; Z65; Z71; 446; 6R6; C21; J31; J3A; J3X; J51; J52; JDA; JSN; K01; K21; K22; K23; K31; K32; K52; L01; L21; L22; L23; L31; L32; L52; L6T; P01; P21; P22; P23; P31; P32; P52

TypeModel

Retain Tip (if applicable)

Reverse Doclinks
and Admin Purposes