CM119B
USB Audio Single Chip
7
8
bmAttributes
bMaxPower
1
2
80
32
Bus Power and support Remote Wakeup
Maximum power consumption of the USB
Device: 100mA
5.2 Speaker Topology
0X01
IT
0X06
OT
0X09
FEA
5.2.1 Device Descriptor
Offset
Field
Size
1
1
2
1
1
1
1
2
Value (Hex)
Description
0
1
2
bLength
bDescriptorType
bcdUSB
12
01
0110
00
00
00
Descriptor length
Device descriptor
USB 1.1 compliant
4
5
6
bDeviceClass
bDeviceSubClass
bDeviceProtocol
Device class specified by interface
Device subclass specified by interface
Device protocol specified by interface
Endpoint zero packet size
7
8
bMaxPacketSize0
idVendor
08
0d8c
0013
0100
Vendor ID
Product ID
Device release number
10
12
idProduct
bcdDevice
2
2
Index of string descriptor that characterizes the
manufacturer
Index of string descriptor that characterizes the product
Index of string descriptor that characterizes the serial
number
14
15
16
17
iManufacturer
iProduct
1
1
1
1
01
02
00
01
iSerialNumber
bNumConfigurations
Number of configuration
5.2.2 Configuration Descriptor
Offset
Field
bLength
Size
Value (Hex)
Description
Descriptor length
Configuration descriptor
0
1
1
1
09
02
bDescriptorType
Total length of data returned for this configuration:
Programmable by MSEL and MODE pin
Number of interfaces supported by this Configuration:
00: Control
2
wTotalLength
2
XXXX
4
bNumInterfaces
1
03
01: ISO-Out
02: INT-IN (HID)
5
6
bConfigurationValue
iConfiguration
1
1
01
00
Configuration value
Index of string descriptor that characterizes this
configuration
7
8
bmAttributes
bMaxPower
1
1
80
32
Attributes(PWRSEL=0:Bus Powered, 1:SELF Powered)
Maximum power consumption from bus = 100mA
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Revised: Aug. 2013 Copyright© C-Media Electronics Inc.
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