Benutzerhandbuch für Texas Instruments TMS320C6747 DSP

Inhaltsverzeichnis

• Table of Contents

  3
• Preface

  6
• 1 Introduction

  7
  • 1.1 Purpose of the Peripheral

    7
• 2 Architecture

  8
  • 2.1 USB1 Module Clock and Reset

    8
    • 2.1.1 Internal System Bus Clocks Needed by the USB1 Module

      8
    • 2.1.2 USB1 Module Local Bus Clock and Local Reset

      8
    • 2.1.3 USB1 Module Bus 48-MHz Reference Clock

      8
  • 2.2 USB1 Module Open Host Controller Interface Functionality

    9
    • 2.2.1 OHCI Controller Overview

      9
  • 2.3 USB1 Module Differences From OHCI Specification for USB

    9
    • 2.3.1 Power Switching Output Pins Not Supported

      9
    • 2.3.2 Overcurrent Protection Input Pins Not Supported

      9
    • 2.3.3 No Ownership Change Interrupt

      9
  • 2.4 Implementation of OHCI Specification for USB

    10
    • 2.4.1 USB Host Controller Endpoint Descriptor (ED) List Head Pointers

      10
    • 2.4.2 OHCI USB Suspend State

      10
  • 2.5 OHCI Interrupts

    11
  • 2.6 USB Host Controller Access to System Memory

    11
  • 2.7 Physical Addressing

    11
• 3 Registers

  12
  • 3.1 OHCI Revision Number Register (HCREVISION)

    13
  • 3.2 HC Operating Mode Register (HCCONTROL)

    13
  • 3.3 HC Command and Status Register (HCCOMMANDSTATUS)

    15
  • 3.4 HC Interrupt and Status Register (HCINTERRUPTSTATUS)

    16
  • 3.5 HC Interrupt Enable Register (HCINTERRUPTENABLE)

    17
  • 3.6 HC Interrupt Disable Register (HCINTERRUPTDISABLE)

    18
  • 3.7 HC HCAA Address Register (HCHCCA)

    19
  • 3.8 HC Current Periodic Register (HCPERIODCURRENTED)

    19
  • 3.9 HC Head Control Register (HCCONTROLHEADED)

    20
  • 3.10 HC Current Control Register (HCCONTROLCURRENTED)

    21
  • 3.11 HC Head Bulk Register (HCBULKHEADED)

    22
  • 3.12 HC Current Bulk Register (HCBULKCURRENTED)

    22
  • 3.13 HC Head Done Register (HCDONEHEAD)

    23
  • 3.14 HC Frame Interval Register (HCFMINTERVAL)

    23
  • 3.15 HC Frame Remaining Register (HCFMREMAINING)

    24
  • 3.16 HC Frame Number Register (HCFMNUMBER)

    24
  • 3.17 HC Periodic Start Register (HCPERIODICSTART)

    25
  • 3.18 HC Low-Speed Threshold Register (HCLSTHRESHOLD)

    26
  • 3.19 HC Root Hub A Register (HCRHDESCRIPTORA)

    27
  • 3.20 HC Root Hub B Register (HCRHDESCRIPTORB)

    28
  • 3.21 HC Root Hub Status Register (HCRHSTATUS)

    29
  • 3.22 HC Port 1 Status and Control Register (HCRHPORTSTATUS1)

    30
  • 3.23 HC Port 2 Status and Control Register (HCRHPORTSTATUS2)

    32