USB20H04 Datasheet, PDF (3/35 Pages) SMSC Corporation – 4-PORT USB 2.0 HUB CONTROLLER

4-Port USB 2.0 Controller
Datasheet
Table of Contents
Chapter 1 General Description ............................................................................................................. 5
1.1 Applications ......................................................................................................................................... 5
1.2 OEM Selectable Features ................................................................................................................... 6
1.3 Pin Selectable Options to the Default Configuration........................................................................... 6
Chapter 2 Functional Block Diagram .................................................................................................. 7
Chapter 3 Pinout .................................................................................................................................... 8
Chapter 4 Interface Signal Definition .................................................................................................. 9
4.1 Pin Descriptions .................................................................................................................................. 9
4.2 Buffer Type Descriptions ................................................................................................................... 11
Chapter 5 Limiting Values .................................................................................................................. 12
Chapter 6 Electrical Characteristics .................................................................................................. 13
6.1 Dynamic Characteristics: Analog I/O Pins (DP/DM) ......................................................................... 15
Chapter 7 Functional Overview.......................................................................................................... 16
7.1 Bus-Power Detect ............................................................................................................................. 16
7.2 Upstream PHY .................................................................................................................................. 16
7.3 Clock/PLL .......................................................................................................................................... 16
7.4 Internal Configuration Select............................................................................................................. 16
7.5 Serial Interface .................................................................................................................................. 17
7.5.1 SMBus Slave ..........................................................................................................................................17
7.5.2 I²C Memory Interface ..............................................................................................................................17
7.6 Repeater............................................................................................................................................ 17
7.7 SIE..................................................................................................................................................... 17
7.8 Controller ........................................................................................................................................... 17
7.9 Transaction Translator (TT) .............................................................................................................. 18
7.10 Port Controller ................................................................................................................................ 18
7.11 Downstream PHY........................................................................................................................... 18
7.12 OC Sense/Switch Driver ................................................................................................................ 18
7.12.1 Over-Current Sense ............................................................................................................................18
7.12.2 Switch Driver .......................................................................................................................................18
7.13 LED Drivers.................................................................................................................................... 18
Chapter 8 Implementation Notes........................................................................................................ 20
8.1 Configuration Implementations ......................................................................................................... 20
8.1.1 Interfacing a 2-wire Serial EEPROM.......................................................................................................20
8.1.2 Internal Default Configuration .................................................................................................................21
8.2 EEPROM Programming Values ........................................................................................................ 21
8.3 Default Configuration Values ............................................................................................................ 23
8.4 Reset ................................................................................................................................................. 24
8.4.1 External Hardware Reset........................................................................................................................24
8.4.2 USB Reset ..............................................................................................................................................27
Chapter 9 Hub Descriptors ................................................................................................................. 28
Chapter 10 Application Diagrams..................................................................................................... 33
Chapter 11 Package Outline .............................................................................................................. 35
SMSC USB20H04
Page 3
DATASHEET
Revision 1.63 (03-30-07)