80930HD Просмотр технического описания (PDF) - Intel

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80930HD

UNIVERSAL SERIAL BUS HUB PERIPHERAL CONTROLLER

Intel 

CONTENTS

1.0 About This Document.......................................................................................................... 1

1.1 Additional Information Sources ...................................................................................... 1

1.2 Electronic Information..................................................................................................... 1

1.3 Product Summary........................................................................................................... 2

2.0 Nomenclature Overview ...................................................................................................... 4

3.0 Pinout .................................................................................................................................. 6

4.0 Signals .............................................................................................................................. 12

5.0 Address Map ..................................................................................................................... 16

6.0 Electrical Characteristics ................................................................................................... 17

6.1 Operating Frequencies ................................................................................................. 17

6.2 DC Characteristics........................................................................................................ 18

6.3 Explanation of Timing Symbols .................................................................................... 20

6.4 System Bus AC Characteristics.................................................................................... 21

6.4.1 System Bus Timing Diagrams ...............................................................................23

6.4.2 Real-time Wait State Function AC Characteristics ................................................27

6.4.3 Real-time Wait State Function Timing Diagrams ..................................................28

6.5 AC Characteristics — Synchronous Mode 0 ................................................................ 30

6.6 External Clock Drive ..................................................................................................... 30

6.7 Testing Waveforms ...................................................................................................... 31

7.0 Thermal Characteristics .................................................................................................... 32

8.0 Design Considerations ...................................................................................................... 32

8.1 External Bus Timing and Peripheral Timing Affected by PLLSEL2:0 Selection ........... 32

8.2 Low Clock Mode Frequency......................................................................................... 32

8.3 Setting RXFFRC Bit Clears Only the Oldest Packet in the FIFO ................................. 32

8.4 Series Resistor Requirement for Impedance Matching ................................................ 32

8.5 Pullup Resistor Requirement for 8x930Hx Hub devices............................................... 32

8.6 Powerdown Mode Cannot Be Invoked Before USB Suspend ...................................... 32

8.7 Unused Downstream Ports........................................................................................... 33

9.0 8x930Hx Errata ................................................................................................................. 33

10.0 Datasheet Revision History ............................................................................................... 33

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