3100 SB Audio Card  (250-1632)     Specifications     Faxback Doc. # 3161

SOUND CAPABILITIES

11-VOICE FM MUSIC-(ADLIB COMPATIBLE)

-Frequency Modulation sound generation for realistic sounds.

-Two modes:  Nine melody sounds or six melody sounds and five rhythm
 sounds supported by numerous games and entertainment software.

1 DIGITIZED VOICE CHANNEL (8 BIT DAC)

-Provide output of sound sampled from the real world-speech, special
 effects, animal sounds, thunderstorm.

-Programmable variable sampling rate 4KHz to 44.1 KHz.

DAC TRANSFER MODES

-Direct mode- Direct single byte transfer by CPU.

-DMA mode - No CPU intervention/overhead required.

COMPRESSION SCHEMES

-8 bit data, no compression.

-2 to 1 data compression - 4 bit ADPCM, hardware decompression.

-3 to 1 data compression - 2.6 bit ADPCM, hardware decompression.

-4 to 1 data compression - 2 bit ADPCM, hardware decompression.

BUILT-IN STEREO POWER AMPLIFIER

-Max output:  Four watts per channel, four ohms stereo output.

-Stereo headset connector drives, speakers, portable speakers or headsets
 directly.

BUILT-IN MANUAL MASTER VOLUME CONTROL

VOICE INPUT (DIGITAL SAMPLING) CAPABILITY

8-BIT A-D CONVERSION OF SOUND SIGNAL

Variable sampling rate:  4 kHz to 15 kHz.

-ADC transfer modes:  Direct mode, DMA mode with no CPU intervention
 required.

ADC TRANSFER MODES

-Direct mode.

-DMA mode - No CPU intervention required.

BUILT-IN MICROPHONE AND LINE-IN JACKS WITH AGC (AUTOMATIC GAIN CONTROL)

-For direct input (sampling) of sound/speech through standard microphone
 or from other device (600 ohms impedance).  Microphone input 0.004 to
 0.7Vrms Line-in, 39K Ohms, with a range of 0.2 to 5Vrms.

PORT OUTPUT

JOYSTICK PORT

-Standard Game I/O port built-in (15 pin D-sub connector).  Connects any
 standard IBM compatible joystick (analog).

MIDI INTERFACE

-Built-in MIDI interface, for connection to MIDI instruments or keyboards.
 (Requires optional MIDI Kit).

OPTIONAL D/MS 12-VOICE STEREO MUSIC
C/MS OR GAME BLASTER COMPATIBLE CHIP KIT

-Two optional C/MS music synthesizer chips that plug into the empty
 sockets on the CT1350 card.  (Optional kit consists of two C/MS chips
 and one other chip).

HARDWARE DATA

The CT1350 uses the I/O ports addresses 220H and 240H.  These are jumper
selectable.  Factory default is 220H.  The following table list I/O
addresses and functions.

┌───────────┬────────────────────────────────────┬──────┐
│I/O ADDRESS│DESCRIPTION                         │ACCESS│
├───────────┼────────────────────────────────────┼──────┤
│2X0H       │C/MS Music Voice 1-6 data port.     │Write │
├───────────┼────────────────────────────────────┼──────┤
│2X1H       │C/MS Music Voice 1-6 register port. │Write │
├───────────┼────────────────────────────────────┼──────┤
│2X2H       │C/MS Music Voice 7-12 data report.  │Write │
├───────────┼────────────────────────────────────┼──────┤
│2X3H       │C/MS Music Voice 7-12 register port.│Write │
└───────────┴────────────────────────────────────┴──────┘

┌───────────┬────────────────────────────────────┬──────┐
│I/O ADDRESS│DESCRIPTION                         │ACCESS│
├───────────┼────────────────────────────────────┼──────┤
│2X8H       │FM Music - Status Port.             │Read  │
│           │                                    │      │
│2X8H       │FM Music - Register Port.           │Write │
│           │                                    │      │
│2X9H       │FM Music - Data Register.           │Write │
│           │                                    │      │
│2X6H       │DSP Reset.                          │Write │
│           │                                    │      │
│2XAH       │DSP (Voice I/O & MIDI Read Data.    │Read  │
│           │                                    │      │
│2XCH       │DSP Write Data or Command.          │Write │
│           │                                    │      │
│2XCH       │DSP Write Buffer Status (bit 7).    │Read  │
│           │                                    │      │
│2XEH       │DSP Data Available Status (bit 7).  │Read  │
└───────────┴────────────────────────────────────┴──────┘

NOTE:  The above table applies only when C/MS chips are present.

(SMC-05/03/94)