
GL850 USB 2.0 4-Port HUB Controller
2000-2003 Genesys Logic Inc.—All rights reserved.
Page 5
5.3.1 Host Commands and Hub Answers..................................................................24
5.3.1.1 Standard Requests......................................................................................24
5.3.1.2 Hub Class Requests ....................................................................................25
5.4 D
ESCRIPTORS
...............................................................................................................27
5.4.1 Full Speed Case...................................................................................................27
5.4.1.1 Device Descriptor........................................................................................27
5.4.1.2 Device Qualifier Descriptor .......................................................................28
5.4.1.3 Configuration Descriptor...........................................................................28
5.4.1.4 Interface Descriptor....................................................................................29
5.4.1.5 Endpoint Descriptor...................................................................................29
5.4.1.6 Other Speed Configuration Descriptor.....................................................30
5.4.1.7 Interface Descriptor combined with Other Speed Configuration
Descriptor....................................................................................................30
5.4.1.8 Endpoint Descriptor combined with Other Speed Configuration
Descriptor....................................................................................................31
5.4.1.9 String Descriptor.........................................................................................31
5.4.2 High Speed Case .................................................................................................32
5.4.2.1 Device Descriptor........................................................................................32
5.4.2.2 Device Qualifier Descriptor .......................................................................33
5.4.2.3 Configuration Descriptor...........................................................................33
5.4.2.4 Interface Descriptor....................................................................................34
5.4.2.5 Endpoint Descriptor in Configuration Descriptor ..................................34
5.4.2.6 Other Speed Configuration Descriptor.....................................................35
5.4.2.7 Interface Descriptor in Other Speed Configuration Descriptor.............35
5.4.2.8 Endpoint Descriptor in Other Speed Configuration Descriptor............36
5.4.2.9 String Descriptor.........................................................................................36
5.4.3 Hub Class Descriptor .........................................................................................37
CHAPTER 6 ELECTRICAL CHARACTERISTICS....................................................38
6.1 M
AXIMUM
R
ATINGS
....................................................................................................38
6.2 DC C
HARACTERISTICS
................................................................................................38
CHAPTER 7 PACKAGE DIMENSION..........................................................................40