CM6308 C-Media Electronics, Inc., CM6308 Datasheet - Page 15

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

Date: 09/04/2007
6.3 Configuration Descriptor
6.4 Standard HID Interface Descriptor
6.5 Class-specific HID Interface Descriptor
Offset
Offset
Offset
0
1
2
4
5
6
7
8
0
1
2
3
4
5
6
7
8
0
1
2
4
5
6
7
bConfigurationValue
bInterfaceSubClass
wDescriptorLength
bInterfaceNumber
bInterfaceProtocol
bAlternateSetting
bNumDescriptors
bDescriptorType
bDescriptorType
bDescriptorType
bDescriptorType
bNumInterfaces
bNumEndpoints
bInterfaceClass
bCountryCode
iConfiguration
wTotalLength
bmAttributes
bMaxPower
iInterface
bLength
bLength
bLength
bcdHID
Field
Field
Field
Size
Size
Size
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
2
Value (Hex)
Value (Hex)
Value (Hex)
0032 / 001a HID class descriptor length in byte: 50 / 26 bytes
32 or fa
80 or
0131
a0 or
e0 or
0100
09
02
04
01
00
09
04
03
00
01
03
00
00
00
09
21
00
01
22
c0
-
15/42 -
Descriptor length
Configuration Descriptor
Total length of data returned for this configuration:
Number of interfaces supported by this Configuration:
00: Control
01: ISO-Out
02: ISO-In
03: INT-IN (HID)
Bus Power and support Remote Wakeup: 8’ha0
(PWRSEL_1 = 1, HID_EN = 1)
Bus Power and no Remote Wakeup: 8’h80
(PWRSEL_1 = 1, HID_EN = 0)
Self Power and support Remote Wakeup: 8’he0
(PWRSEL_1 = 0, HID_EN = 1))
Self Power and no Remote Wakeup: 8’hc0
(PWRSEL_1 = 0, HID_EN = 0))
8’h32 (50x2 mA) (PWRSEL_2 = 1)
Maximum power consumption from bus = 500mA:
8’hfa (250x2 mA) (PWRSEL_2 = 0)
Descriptor length
Interface Descriptor
Interface number: 03
Alternate interface
HID Interface Class
Subclass code
Protocol code
Index of string descriptor describing this interface
Descriptor length
HID descriptor type
HID class version
No country code
One HID class descriptor
Report Descriptor
(Enable / Disable HID Button)
Configuration value
Index of string descriptor describing this configuration
Maximum power consumption from bus = 100mA:
Number of endpoints used by this interface
305 bytes
Audio and Voice Applications
Single-Chip USB Solution for
Description
Description
Description
CM6308
Version: