CM6308 C-Media Electronics, Inc., CM6308 Datasheet - Page 14

• Manufacturer Part Number: CM6308
• Description: Cm6308 Usb Audio Chip Specification
• Manufacturer: C-Media Electronics, Inc.

6.USB Audio Topology and Descriptors
Date: 09/04/2007
Note 1: When a valid EEPROM is detected, the Vendor ID and Product ID will be replaced with the contents of the
Note 2: iSerialNumber is valid only if the external EEPROM contains this information.
6.1 USB Topology
6.2 Device Descriptor
Offset
10
12
14
15
16
17
0
1
2
4
5
6
7
8
USB STREAM
LINE-IN
EEPROM.
MIC
IT
IT
IT
bNumConfigurations
bMaxPacketSize0
bDeviceSubClass
bDescriptorType
bDeviceProtocol
iSerialNumber
iManufacturer
bDeviceClass
bcdDevice
idProduct
idVendor
bLength
iProduct
bcdUSB
Field
FEA
FEA
Size
1
1
2
1
1
1
1
2
2
2
1
1
1
1
Value (Hex)
00 or 02(*)
MIXER
FEA
FEA
0110
0100
0d8c
010F
12
01
00
00
00
40
03
01
01
-
14/42 -
Descriptor length
Device Descriptor
USB 1.1 compliant
Device class specified by interface
Device subclass specified by interface
Device protocol specified by interface
Endpoint zero packet size
Vendor ID
Device release number
Index of string descriptor describing manufacturer
Index of string descriptor describing product
Number of configuration
Product ID
Index of string descriptor describing serial number
Audio and Voice Applications
FEA
SEL
Single-Chip USB Solution for
Description
USB STREAM
SPEAKER
OT
OT
CM6308
Version: