Data Sheet

USB AUDIO controller

SN11121ASF

Sonix Confidential

Do not copy, reproduce, or distribute without permission

2004 Jan13, Revision V0.3

1

I.

Description

SONiX SN11121ASF is an USB audio controller. It supports total 3 sampling rates

including 32KHz, 44.1KHz and 48KHz in digital/analog playback.

In digital playback mode, it receives audio stream from PC via USB interface and

transmits audio data according to the AES/EBU, IEC60958, S/PDIF consumer

interface standards. In analog playback mode, it supports 2 channels Codec for analog

playback.

Totally one control pipe, one isochronous pipe, and one interrupt pipe are supported

by SN11121ASF.

II.

Features

Supports AES/EBU, IEC60958, S/PDIF consumer formats for stereo PCM

audio

32KHz, 44.1KHz and 48KHz sampling rates for 2 channels playback in

digital/analog mode

Conveys AC-3 data stream by S/PDIF output

Compatible with Win98 SE/ WinME/ Win2000/ WinXP and MacOS

9.2.1/MacOS10.2 without additional driver

Plug-and-Play operation with Microsoft OS or MacOS default drivers

Compliant with USB specification v1.1

Compliant with USB audio device class specification v1.0

Supports USB full speed 12Mbits/s serial data transmission

USB bus power or self power option

Supports suspend/resume and remote wake-up

6MHz crystal input with on-chip PLL and embedded transceiver for USB

On-chip PLL for synchronized with USB host for CODEC interface

USB audio function topology has one input terminal, two output terminals, and

one feature unit

Alternate setting0 is a zero-bandwidth setting; used to release the claimed

bandwidth on the bus when this device is inactive