
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 | 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 | 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 | 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 | Revision 1.63 |
DATASHEET