Description:

The 20K2 digital audio processor is based on the 20K1 architecture and accelerates OpenAL 3D audio, X-Fi CMSS-3D, X-Fi Crystalizer and other advanced X-Fi audio processing. The 20K2 uses an advanced PCI Express (PCIe) one-lane interface and adds an embedded RISC processor to safeguard against control latencies introduced by the PCIe interface. The 20K2 also expands the audio I/O capabilities and upgrades the SDRAM interface to DDR for increased local memory bandwidth. In addition, The 20K2 incorporates a High Definition audio architecture (UAA) component.

Key Features

PCI Express 1.1 interface

Sample Rate Converter engine

Digital Filter engine

Digital delay line accelerator ("tank engine")

Audio Mixer

Microprogrammable "Quartet" audio DSP

DDR SDRAM interface

Parameter Generator / Mixer

High Definition Audio component

Embedded RISC control processor

24-bit Digital Audio I/O

8 Audio Input and 8 Audio Output interfaces (I2S, I4S, I8S I16S, S/PDIF or CDIF)

Up to 128 channels of audio input and 128 channels of audio output

Sample rates supported include 44.1, 48, 88.2, 96, 192 and 384kHz