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

5.4.1 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

CHAPTER 7 PACKAGE DIMENSION.......................................................................... 40