PI293PP1 JUL ‘98

3

CS4622/24

Overview

Overview

The CS4622/24 is a high performance audio accelerator DSP for the PCI bus.

This device, combined with application and driver software, provides a com-

plete system solution for cost effective acceleration of Windows DirectSound,

Direct-Sound3D, DirectInput, MIDI playback via Wavetable Synthesis with

reverberation and chorus effects processing, and more. The CS4622/24 is com-

patible with the CS4610C with the following added features:

- Primary AC ‘97 Interface now 2.0 compatible

- CrystalClear Legacy Support

- PC/PCI Legacy Support

- DDMA Legacy Support

- PCI Power Management Event Support

- ZV Port Asynchronous Serial Port

- 2nd Asynchronous Serial Port

- 9 Extended GPIO pins for Modem Support

- Consumer Digital (S/PDIF) Input and Output

The CS4622 is a high-performance, full-featured version of the SoundFusion

audio accelerator. The CS4624 is a reduced-cost version of the CS4622. The

CS4624 has a lower maximum clock speed and does not support AC-3. Please

refer to the OEM Software Reference Manual for more details.

FAQs

1)

What is the difference between the two devices?

A:

The CS4622 offers the capability to decode Dolby Digital (AC3), and the

CS4624 does not.

2)

How is the Dolby License obtained?

A:

Cirrus Logic can only ship devices and software implementing Dolby

4622-4pi.fm Page 3 Tuesday, July 7, 1998 1:21 PM