CS4611 データシートの表示（PDF） - Cirrus Logic
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CS4611 Datasheet PDF : 29 Pages
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CS4610/11
CrystalClear™ SoundFusion™ PCI Audio Accelerator
provides all Analog-to-Digital conversion (ADC)
and Digital-to-Analog conversion (DAC) func-
tions. Digital audio is transferred between the
CS423x and the CS4610/11 over a proprietary bi-
directional serial data link between the two devices.
MIDI data from the CS423x MPU-401 UART is
also transferred serially to the CS4610. DOS appli-
cations can directly address the CS423x audio
functions on the ISA bus. Windows DirectX audio
applications will address the PCI-based CS4610/11
device through Windows DirectX drivers, wherein
the CS423x is utilized as the external Codec for an-
alog I/O.
A system diagram depicting connection of the
CS4610/11 to the CrystalClear CS4297 AC’97 Co-
dec is given in Figure 7. All analog audio inputs
and outputs are connected to the AC’97 Codec. Au-
dio data is passed between the AC’97 Codec and
the CS4610/11 over the serial AC-Link. The
CS4610/11 provides a hardware interface for con-
nection of a joystick and MIDI devices. Legacy au-
dio support under a Windows DOS Box is provided
via virtualization of the Sound Blaster™, OPL3
FM synthesizer and MPU-401 MIDI interface reg-
isters.
CPU
Host Bridge /
Mem Control
Host Memory
PCI Bus
Opt. CS4333 DACs
Optional
Surround
Outputs
ISA
Bridge
CS4610/11
Accelerator
Digital
Link
ISA Bus
CS423x
Motherboard
Audio
Audio Out
Audio In
Figure 6. CS4610/11 + CS423x Motherboard Audio Configuration
CPU
Host Bridge /
Mem Control
Host Memory
PCI Bus
CS4610/11
Accelerator
AC ’97
Codec
Audio Out
Audio In
Figure 7. CS4610/11 + AC ‘97 Codec Configuration
10
DS241PP5
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