Filter
Top Products
4-Port USB 2.0 Controller
Datasheet
SMSC USB20H04 Page 3 Revision 1.63 (03-30-07)
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 I
2
C 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