AK4571 Datasheet, PDF (23/54 Pages) Asahi Kasei Microsystems – USB I/F Audio CODEC

ASAHI KASEI
[AK4571]
2.8.2.
Descriptor, (5) String Descriptor
(1)Device Descriptor, (2) Configuration Descriptor, (3) Interface Descrip tor (4) Endpoint
AK4571 1 Configuration, 4 Interface
Interface 0
Interface 1(A/D )
Interface 2 D/A
1 Interface 3(HID ) 1 Endpoint(EP)
Device
Device
Descriptor
Interface
Configuration
Interface 0
Standard Audio Control
Interface Descriptor
Configuration
Descriptor
Interface 1
Standard AS Interface
Descriptor Alt. Setting 0
Interface 2
Standard AS Interface
Descriptor Alt. Setting 0
Interface 3
Standard AS Interface
Descriptor Alt. Setting 0
Class-Specific Audio Control
Interface Descriptor
Standard AS Interface
Descriptor Alt. Setting 1
Standard AS Interface
Descriptor Alt. Setting 1,2
HID Descriptor
Input Terminal
Descriptor
Class-Specific Audio Streaming
Interface Descriptor
Class-Specific Audio Streaming
Interface Descriptor
Standard HID Interrupt
Endpoint Descriptor
Output Terminal
Descriptor
Feature Unit
Descriptor(Mute,Volume,AGC)
Class-Specific AS Format Type
Descriptor
Standard AS Isochronous
Endpoint Descriptor
Class-Speci fic AS Format Type
Descriptor
Standard AS Isochronous
Endpoint Descriptor
IN Endpoint
(interrupt)
Mixer Unit Descriptor
Selector Unit Descriptor
Class-Specific AS Isochronous
Endpoint Descriptor
IN Endpoint
(Isochronous)
Class-Specific AS Isochronous
Endpoint Descriptor
OUT Endpoint
(Isochronous)
Figure 13 Descriptor Hierarchy
MS0153-J-02
- 23 -
2003/3