Creative SB0350 Hardware Programming Guide - Page 21

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1-8 Hardware Overview JOYSTICK PORT MIDI PORT FILTER COMMAND/ DATA CT1341 DSP CT1336 BUS INTERFACE CHIP CONTROL VOICE DATA AGC CONTROL CT1345 MIXER CHIP CD IN MIC IN ISA BUS CONTROL LINE IN FM SYNTHESIZER POWER AMP CD INTERFACE SPKR CD-ROM DRIVE Figure 1-4: Block Diagram of the Sound Blaster Pro Sound Blaster Pro is a 8-bit stereo sampling card with stereo mixer chip and CD-ROM interface built in. The DSP has been gradually enhanced to cover wider sampling range. There are two versions of Sound Blaster Pro. The different is in the FM synthesizer chip used. The earlier version uses a two-operator FM chip known as OPL2, while the later version uses a four-operator FM synthesizer chip known as OPL3. The version with OPL3 is commonly known as Sound Blaster Pro 2.

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1-8
Hardware Overview
CT1336
BUS
INTERFACE
CHIP
JOYSTICK
PORT
CT1341
DSP
FM
SYNTHESIZER
MIDI
PORT
CD
INTERFACE
ISA
BUS
CONTROL
COMMAND/
DATA
CT1345
MIXER
CHIP
POWER
AMP
VOICE DATA
CONTROL
CONTROL
MIC IN
CD IN
LINE IN
SPKR
CD-ROM DRIVE
FILTER
AGC
Figure 1-4: Block Diagram of the Sound Blaster Pro
Sound Blaster Pro is a 8-bit stereo sampling card with stereo mixer chip and CD-ROM
interface built in.
The DSP has been gradually enhanced to cover wider sampling range.
There are two versions of Sound Blaster Pro.
The different is in the FM synthesizer
chip used.
The earlier version uses a two-operator FM chip known as OPL2, while the
later version uses a four-operator FM synthesizer chip known as OPL3.
The version
with OPL3 is commonly known as Sound Blaster Pro 2.