Texas Instruments TMS320C6747 DSP manual SPRUFM8-September

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2	SPRUFM8–September 2008

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Contents Users Guide Literature Number SPRUFM8 SeptemberSPRUFM8-September Contents List of Figures List of Tables Read This First Universal Serial Bus Ohci Host Controller Purpose of the PeripheralInternal System Bus Clocks Needed by the USB1 Module USB1 Module Clock and Reset2 USB1 Module Local Bus Clock and Local Reset 3 USB1 Module Bus 48-MHz Reference ClockUSB1 Module Differences From Ohci Specification for USB USB1 Module Open Host Controller Interface FunctionalityImplementation of Ohci Specification for USB Ohci USB Suspend StatePhysical Addressing USB Host Controller Access to System MemoryOhci Interrupts MMUUSB Host Controller Registers Ohci Revision Number Register Hcrevision Field Descriptions HC Operating Mode Register HccontrolOhci Revision Number Register Hcrevision REVControl ED per bulk ED Control list enablePeriodic list enable Control EDs per bulk EDOCR BLF CLF HCR HC Command and Status Register HccommandstatusSOC OCRRhsc HC Interrupt and Status Register HcinterruptstatusRhsc FNO WDH HC Interrupt Enable Register Hcinterruptenable MIEHC Interrupt Disable Register Hcinterruptdisable HC Hcaa Address Register Hchcca Field Descriptions HC Hcaa Address Register HchccaHC Current Periodic Register Hcperiodcurrented HccaChed HC Head Control Register HccontrolheadedHC Head Control Register Hccontrolheaded Field Descriptions Controller HC Current Control Register HccontrolcurrentedCced HC Head Bulk Register Hcbulkheaded Field Descriptions HC Head Bulk Register HcbulkheadedHC Current Bulk Register Hcbulkcurrented HC Current Bulk Register Hcbulkcurrented Field DescriptionsHC Head Done Register Hcdonehead Field Descriptions HC Head Done Register HcdoneheadHC Frame Interval Register Hcfminterval HC Frame Interval Register Hcfminterval Field DescriptionsHC Frame Number Register Hcfmnumber Field Descriptions HC Frame Remaining Register HcfmremainingHC Frame Number Register Hcfmnumber FRTHC Periodic Start Register Hcperiodicstart HC Periodic Start Register Hcperiodicstart628h HC Low-Speed Threshold Register HclsthresholdLST Reserved 13-0Potpg HC Root Hub a Register HcrhdescriptoraHC Root Hub a Register Hcrhdescriptora Field Descriptions Nocp Ocpm NPS PSM NDPPPCM3 PPCM2 PPCM1 PPCM0 HC Root Hub B Register HcrhdescriptorbHC Root Hub B Register Hcrhdescriptorb Field Descriptions PPCM3HC Root Hub Status Register Hcrhstatus HC Root Hub Status Register Hcrhstatus Field DescriptionsHC Port 1 Status and Control Register HCRHPORTSTATUS1 PRS/SPR HC Port 2 Status and Control Register HCRHPORTSTATUS2 Effect Port 2 current connect status has not changedEnd of the USB reset sequence When read as 0, USB reset is not being sent to portBegin signaling USB reset to port Write of 1 to this bit clears the port 2 port enable bitDSP Rfid

SPRUFM8–September 2008