DS4201

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102099

The DS4201 USB function core fully complies with both the USB Specification v1.0 and the USB

Device Class Definition for Audio Devices v1.0. To complete the USB capability of the DS4201, a USB

compliant transceiver is integrated to eliminate the need for any additional support chips. Organization of

the DS4201 in an USB context is shown in Figure 2. For the USB enabled PC, the DS4201 is an ideal

digital output solution for high quality audio and control within the speaker or monitor enclosure. Its USB

control and capabilities as well as its high quality audio characteristics also comply with next generation

PC system and audio standards put forth by industry leaders.

RELATED DOCUMENTS

This data sheet references or complies with the following USB specifications which are considered to be

part of the DS4201 device specification. These documents may be obtained from the USB Implementers

Universal Serial Bus Specification

Universal Serial Bus Device Class Definition for Audio Devices

FUNCTIONAL BLOCK DIAGRAM Figure 1

SIGNAL SUMMARY

SIGNAL NAME

TYPE

FUNCTION

D+

I/O

USB data – non-inverted signal of differential data pair.

D-

I/O

USB data – inverted signal of differential data pair.

SPM

I

Suspend Power Mode – controls device power configuration when a

USB suspend state is entered.

SUSO

O

Suspend Output – buffered USB suspend state output from USB

device core. When HIGH the USB is in an active non-suspended

state, when LOW the USB has entered a suspended state. This is an

open drain output and requires a pull-up.

RMIC

I

Microphone right channel analog input to the analog output mixer.

LMIC

I

Microphone left channel analog input to the analog output mixer.