SMSC USB20H04 Manual De Usuario

Descargar
Página de 35
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