gl850 ETC-unknow, gl850 Datasheet - Page 33

• Manufacturer Part Number: gl850
• Description: Usb 2.0 4-port Hub Controller
• Manufacturer: ETC-unknow

5.4.2.2 Device Qualifier Descriptor
5.4.2.3 Configuration Descriptor
©2000-2003 Genesys Logic Inc.—All rights reserved.
High Sped Device Qualifier Descriptor contains almost the same information as the Full Speed Device
Qualifier Descriptor, except that bDeviceProtocol value is 00h.
Information contained in High Speed Configuration Descriptor is the same as Full Speed Configuration
Descriptor.
Offset
Offset
0
1
2
4
5
6
7
8
9
0
1
2
4
5
6
7
8
bLength
bDescriptorType
bcdUSB
bDeviceClass
bDeviceSubClass
bDeviceProtocol
bMaxPacketSize0
bNumConfigurations
bReserved
bLength
bDescriptorType
wTotalLength
bNumberInterface
bConfigurationValue
iConfiguration
bmAttribute
bMaxPower
Field
Field
Table 5.17 - Configuration Descriptor for High Speed
Table 5.16 - Device Qualifier for High Speed
0200h USB2.0 compliance
0019h Total 25 bytes
Value
Value
0Ah
E0h
06h
09h
00h
00h
40h
01h
00h
09h
02h
01h
01h
00h
32h
10 bytes for this descriptor
Device qualifier descriptor
type
Hub class code
Subclass code
Protocol code
Max.
endpoint0 of other speed
Number
config.
Reserved for future use
9 bytes for this descriptor
Configuration descriptor
type
Number of interfaces
Configuration value
Index of string descriptor
Can switch between self
power and bus power
Max. power = 100 mA
Description
Description
packet
of
other
GL850 USB 2.0 4-Port HUB Controller
size
speed
for
Configuration
Configuration
I/O
I/O
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Configuration
Configuration
EEPROM
EEPROM
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Page 33