CS4281
Product Data Sheet
FEATURES
n
Full DOS Games Compatibility via PC/PCI, DDMA,
and CrystalClear Legacy Support
CrystalClear™ PCI
Audio Interface
DESCRIPTION
The CS4281 is a PCI audio controller with integrated
legacy games support suitable for desktop and note-
book PC designs. When combined with driver software
and an AC ’97 codec such as the CS4297A, this device
provides a complete high quality audio solution. Legacy
compatibility is achieved via PC-PCI, DDMA, and Crys-
talClear Legacy Support. The product includes an
integrated FM synthesizer and Plug-and-Play interface.
In addition, the CS4281 offers hardware volume control
and power management features. WDM drivers provide
support for Windows 98
®
and Windows NT
®
. When
used with the CS4297A, the CS4281 is fully compliant
with Microsoft’s PC ’98 and PC ‘99 audio requirements.
In the 100-pin MQFP package, the CS4281 is pin-com-
patible with the CS4614 and CS4280-CM.
ORDERING INFORMATION
CS4281-CM 100-pin MQFP 14x20x2.72mm
CS4281-CQ 100-pin TQFP 14x14x1.4mm
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PCI Version 2.1 Bus Master
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PC ’98 and PC ’99 Compliance
n
MPU-401 interface, FM Synthesizer, and Game
Port
n
Full Duplex Operation
n
Hardware Volume Control
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Win 95
®
, 98 (WDM), Win NT
®
4.0, Win NT 5.0
(WDM) Drivers
n
n
n
n
n
Advanced Power Management (PPMI)
Digital Docking Solution with AC ‘97 2.0 Codec
Support for Multi-Channel Audio Output
Hardware Sample Rate Converters
Pin-Compatible with CS4614 and CS4280-CM
Mixer SRC
DMA
Engine
PCI
Interface
Controller
PCI Bus
Interrupt
Control
FM
GPIO
I/O Register Array
MIDI &
Joystick
Support
PLL &
Clock
Control
CIRRUS LOGIC PRODUCT DATA SHEET
DS308PP4
Copyright
©
Cirrus Logic, Inc. 1999
(All Rights Reserved)
Serial AC Link
APR ‘99
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