GL850 datasheet(33/40 Pages) ETC

33 / 40 page

GL850 USB 2.0 4-Port HUB Controller

Page 33

5.4.2.2 Device Qualifier Descriptor

High Sped Device Qualifier Descriptor contains almost the same information as the Full Speed Device

Qualifier Descriptor, except that bDeviceProtocol value is 00h.

Table 5.16 - Device Qualifier for High Speed

Offset

Field

Value

Description

I/O

Configuration

EEPROM

Configuration

bLength

0Ah 10 bytes for this descriptor

bDescriptorType

06h

Device qualifier descriptor

type

bcdUSB

0200h USB2.0 compliance

bDeviceClass

09h

Hub class code

bDeviceSubClass

00h

Subclass code

bDeviceProtocol

00h

Protocol code

bMaxPacketSize0

40h

Max.

packet

size

for

endpoint0 of other speed

bNumConfigurations

01h

Number

other

speed

config.

bReserved

00h

Reserved for future use

5.4.2.3 Configuration Descriptor

Information contained in High Speed Configuration Descriptor is the same as Full Speed Configuration

Descriptor.

Table 5.17 - Configuration Descriptor for High Speed

Offset

Field

Value

Description

I/O

Configuration

EEPROM

Configuration

bLength

09h

9 bytes for this descriptor

bDescriptorType

02h

Configuration descriptor

type

wTotalLength

0019h Total 25 bytes

bNumberInterface

01h

Number of interfaces

bConfigurationValue

01h

Configuration value

iConfiguration

00h

Index of string descriptor

bmAttribute

E0h

Can switch between self

power and bus power

bMaxPower

32h

Max. power = 100 mA

GL850 Datasheet(PDF) 33 Page - List of Unclassifed Manufacturers

GL850 Datasheet(HTML) 33 Page - List of Unclassifed Manufacturers

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

Datasheet Download

Link URL