Cirrus Logic Crystal Audio Device Is First To Meet Microsoft Windows Logo Requirements For Use With Windows Millennium
Device Allows Computer Manufacturers to Quickly Bring to Market the Highest Quality Audio Solution that Meets Windows Millennium Requirements
  Austin, Texas –July 18, 2000 -- Cirrus Logic Inc., the worldwide market share leader in audio ICs, according to Forward Concepts, has announced that its Crystal CS4281 is the first audio device to meet Windows Logo requirements for Windows Millennium Edition (Windows Me). The CS4281 has endured rigorous testing to ensure compatibility with all Microsoft design criteria in order to meet Windows Logo requirements. As a result, computer manufacturers can be assured that the CS4281 and its device driver software will pass Microsoft Windows Hardware Quality Lab (WHQL) audio requirements. This will streamline system testing, allowing computer manufacturers to introduce new systems faster. The CS4281 is a PCI audio controller that delivers legacy support for both Real Windows DOS Box and Real Mode Applications. With its support for sample rates from 8-to-48kHz, the CS4281 supports all multimedia file types, and increases system design flexibility. Further, this device can handle multiple streams of data for systems that include a software modem and/or multiple audio channels, thereby supporting streaming audio in gaming and Internet applications. Cirrus Logic can supply customers worldwide with a complete audio solution including hardware, software and support.

“Cirrus Logic is committed to delivering the industry’s best audio chips for computing systems using Microsoft Operating Systems, and we are proud to be the first audio vendor to meet Windows Logo requirements for Windows Me,” said Keith Essency, vice president and general manager of Cirrus Logic’s Crystal Computer Audio Division.

Cirrus Logic is a supplier of high-performance analog and DSP chip solutions for Internet entertainment electronics. Building on its global market share leadership in audio integrated circuits and its rich mixed-signal patent portfolio, the company targets high-volume audio, storage and communications applications. Founded in 1984 in Silicon Valley, Cirrus Logic operates from headquarters in Austin, Texas and major sites located in Fremont, California and Broomfield, Colorado as well as offices in Europe, Japan and Asia.
CS4281: CrystalClear PCI Audio Interface (click for larger image)

Product Features:

  • Full DOS games compatibility via PC/PCI, DDMA, and CrystalClear Legacy Support
  • PCI version 2.1 Bus Master
  • PC ’98 and PC ’99 compliance
  • MPU-401 interface, FM synthesizer, and game port
  • Full duplex operation
  • Hardware volume control
  • Windows 95, 98 (WDM), Windows NT 4.0, Windows NT 5.0 (WDM) Drivers
  • 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
  • Ordering Information
  • CS4281-CM 100-Pin MQFP
  • CS4281-CQ 100-Pin TQFP

Product Description:

The CS4281 is a PCI audio controller with integrated legacy games support suitable for desktop and notebook 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 CrystalClear 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-compatible with the CS4614 and CS4280-CM.

Source: Cirrus Logic
Web: www.cirrus.com