參數(shù)資料
型號： 82C931
廠商： Electronic Theatre Controls, Inc.
英文描述： Plug and Play Integrated Audio Controller
中文描述： 即插即用集成音頻控制器
文件頁數(shù)： 11/64頁
文件大?。?/td> 634K
代理商： 82C931
82C931
912-3000-035
Revision: 2.1
Page 3
OPTi
2.0
Overview
The OPTi 82C931 is a single-chip Plug-and-Play audio sys-
tem controller and codec that provides compatibility with
Sound Blaster Pro, Microsoft Windows Sound System,
OPL3, and MPU-401 interfaces. The 82C931 integrates a 16-
bit stereo sigma-delta codec and PC-97 compliant internal
resource structure. This provides an effective audio solution
for Windows 95 operating systems, DirectSound, and
advanced audio applications.
The 82C931 provides front panel push-button volume control,
external modem chip interface, serial EEPROM for further
customizing, support for 16-bit Type F DMA playback and an
I
2
S serial interface to a Zoom Video Port, wavetable control-
ler, or modem chipset.
The 82C931 includes the following functions: ISA bus inter-
face, Sound Blaster Pro-compatible Digital Audio Processor,
MIDI interface, Windows Sound System interface, FM syn-
thesizer interface, 16-bit codec/mixer, game port timer, and
IDE CD-ROM interface. The device also includes dual DMA
channels that support full duplex operation for simultaneous
record and playback, a silence mode, power-down modes,
and software programmable interrupts. (Figure 2-1 shows a
functional block diagram of the 82C931. Figure 2-2 shows the
82C931 data flow block diagram.)
The 82C931 Integrated Audio Controller provides all of the
functions and interfaces for Sound Blaster Pro-compatible
and Microsoft Windows Sound System-compatible cards.
The 82C931 is intended to provide an integrated audio solu-
tion for business audio, educational/entertainment sound,
and multimedia applications.
Figure 2-1
Functional Block Diagram
SADI
SADO
SCLK
FSYNC
IOW#
IOR#
AEN
RESET
OSCI
SA[15:0]
SD[15:0] or SD[7:0]
SDHOE+GPIO0
DACK0#/1#/3#
DACK5#/6#
DRQ0/1/3
IRQ3/4/5/7/9/10/11/15
GD[7:0]
OSCI
OSCO
MICL/R
AUXL/R
CDL/R
LINEL/R
OUTL/R
MIXOUTL/R
RXD
TXD
CA[2:0]
IDECS1#
IDECS3#
CDOE#
CDHOE#
XIOR#
XIOW#
RESET#
IDEIRQ
ISA
Control
WSS
REGS
CONF
REGS
Digital
Audio
Processor
MIDI
FIFO
UART
CD-ROM
Interface
CLK
GEN
8/16-bit Type
DMA Logic
Interrupt
Game Port Timer
FIFO
Volume Control
VOLUP
VOLDWN
I
2
S Serial Audio Port
Modem Interface
OPTiFM
MODEMINT
MODEMCS#
16-bit Sigma-Delta
Codec/Mixer
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