at43312 ATMEL Corporation, at43312 Datasheet - Page 10

• Manufacturer Part Number: at43312
• Description: Self- And Bus- Powered Usb Hub Controller
• Manufacturer: ATMEL Corporation

Configuration Descriptor
This Configuration Descriptor provides information about AT43312’s configuration.
Bus Powered Mode:
Interface Descriptor
The Interface Descriptor provides information about the single interface which the AT43312 supports.
10
Offset
Offset
Offset
0
1
2
4
5
6
7
8
7
8
0
1
2
3
4
5
6
7
8
Field
bLength
bDescriptorType
wTotalLength
bNumInterface
bConfiguration
Value
iConfiguration
bmAttributes
MaxPower
Field
bmAttributes
MaxPower
Field
bLength
bDescriptorType
bInterfaceNumber
bAlternatSetting
bNumEndpoints
bInterfaceClass
bInterfaceSubClass
bInterfaceProtocol
iInterface
AT43312
Description
Define size of this descriptor = 9 bytes
Descriptor type = Configuration
Total length of data returned for this configuration. Consists of the
combined length of configuration, interface, endpoint and hub descriptors
= 34 bytes
Number of interfaces supported by this configuration
Argument value for this configuration to be used by Set Configuration
command
Index of string descriptor describing this configuration (not supported)
Configuration characteristics = Bus and Self-Powered with Remote
Wakeup
Maximum power consumption of USB device from bus = 100 mA
Description
Configuration characteristics = Bus-Powered with Remote Wakeup
Maximum power consumption of USB device from bus = 500 mA
Description
Define size of this descriptor = 9 bytes
Descriptor type = Interface
Number of interface = 1, index = 0
Alternate setting value for the interface identified in the prior field = 0
Number of endpoints used by this interface = 1
Class code = HUB_CLASSCODE = 09
Subclass code = 0
Protocol code = 0
Index of string descriptor describing this interface = not supported
Size (bytes)
Size (bytes)
Size (bytes)
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Value
Value
Value
0x09
0xE0
0xA0
0x09
0x02
0x22
0x00
0x01
0x01
0x00
0x32
0xFA
0x04
0x00
0x00
0x01
0x09
0x00
0x00
0x00