PCM2901

PCM2903

SLES034B − MARCH 2002 − REVISED JUNE 2004

www.ti.com

22

DEVICE CONFIGURATION

Figure 34 illustrates the USB audio function topology. The PCM2901/2903 has four interfaces. Each interface

is constructed by alternative settings.

Analog Out

Analog In

Default

End-Point

End-Point #2

(IF #1)

Audio Streaming

Interface

End-Point #0

End-Point #4

(IF #2)

Audio Streaming

Interface

End-Point #5

(IF #3)

HID Interface

IT

TID1

FU

UID3

OT

TID5

OT

TID2

IT

TID4

Standard Audio Control Interface (IF #0)

PCM2901/2903

Figure 34. USB Audio Function Topology