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CS5535 датащи(PDF) 280 Page - National Semiconductor (TI) |
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CS5535 датащи(HTML) 280 Page - National Semiconductor (TI) |
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280 / 555 page ![]() www.national.com 280 Revision 0.8 USB Register Descriptions (Continued) 5.5.4.5 Host Controller Interrupt Enable (USBC_HcInterruptEnable) Writing a 1 to a bit in this register sets the corresponding bit, while writing a 0 leaves the bit unchanged. USBC_HcInterruptStatus Register Map 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 98 7654321 0 RSVD USBC_HcInterruptStatus Bit Descriptions Bit Name HCD HC Description 31 RSVD R/W R/W Reserved. Read/write 0s. 30 Ownership Change R/W R/W Ownership Change. This bit is set when the OwnershipChang- eRequest bit of HcCommandStatus is set. 29:7 RSVD R/W R/W Reserved. Read/write 0s. 6 RootHubStatus Change R/W R/W Root Hub Status Change. This bit is set when the content of HcRhStatus or the content of any HcRhPortStatus register has changed. 5 FrameNumber Overflow R/W R/W Frame Number Overflow. Set when bit 15 of FrameNumber changes value. 4 Unrecoverable Error R/W R/W Unrecoverable Error (Read Only). This event is not imple- mented and is hard-coded to 0. HCD clears this bit. 3 Resume Detected R/W R/W Resume Detected. Set when HC detects resume signaling on a downstream port. 2 StartOfFrame R/W R/W Start Of Frame. Set when the Frame Management block signals a Start of Frame event. 1 WritebackDone Head R/W R/W Writeback Done Head. Set after the HC has written HcDone- Head. 0 Scheduling Overrun R/W R/W Scheduling Overrun. Set when the List Processor determines a Schedule Overrun has occurred. USB Memory Offset 10h Type HCD: HC: R/W RO Reset Value 00000000h |
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