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Lantronix DSTni-EX manual Data Field Received Not 8 Bits, CRC16 Failure, PID check field failed

Models: DSTni-EX

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Bits	Field Name	Description
5	DMAERR	1 = USB requests a DMA access to read a new BDT, but is not given the bus
		before USB needs to receive or transmit data.
		• If processing a TX transfer, this causes a transmit data underflow condition.
		• If processing an Rx transfer, this causes a receive data overflow condition.
		This interrupt is useful for developing device-arbitration hardware for the
		microprocessor and USB to minimize bus request and bus grant latency.
		OR
		1 = a data packet to or from the host is larger than the buffer size allocated in the
		BDT. The data packet is truncated as it is placed into buffer memory.
4	BTOERR	1 = a bus turnaround time-out error occurred.
		0 = a bus turnaround time-out error has not occurred.
		The USB uses a bus-turnaround timer to track the elapsed time between the
		token and data phases of a SETUP or OUT TOKEN or the data and handshake
		phases of a IN TOKEN. If more that 16-bit times are counted from the previous
		EOP before a transition from IDLE, a bus turnaround time-out error occurs.
3	DFN8	Data Field Received Not 8 Bits
		The USB Specification 1.0 states that the data field must be an integral number of
		bytes. If the data field is not an integral number of bytes, this bit is set.
2	CRC16	CRC16 Failure
		1 = data packet is rejected due to a CRC16 error.
		0 = data packet is not rejected due to a CRC16 error.
1	CRC5\EOF	Error interrupt with two functions.
		• USB is in peripheral mode (HOST_MODE_EN=0): this interrupt detects a CRC5
		error in the token packets generated by the host. If set, the token packet is
		rejected due to a CRC5 error.
		• USB is in host mode (HOST_MODE_EN=1): this interrupt detects End-of-Frame
		(EOF) error conditions. This occurs when the USB transmits or receives data
		and the SOF counter is zero. In this mode, this interrupt is useful for developing
		USB packet-scheduling software to ensure that no USB transactions cross the
		start of the next frame.
0	PID_ERR	PID check field failed.

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Lantronix DSTni-EX manual Data Field Received Not 8 Bits, CRC16 Failure, Error interrupt with two functions

Contents

DSTni-EX User Guide Section FivePage Technical Support Copyright & TrademarkLantronix Master DistributorWarranty 2 SPI Controller Contents1 About This User Guide 3 I2C ControllerList of Tables 5 CAN ControllersTable 3-17. Clock Control Register List of Figures 1 About This User Guide Navigating Online Intended AudienceConventions Notes Notes are information requiring attentionOrganization SPI Background 2 SPI ControllerTheory of Operation DSTni SPI ControllerSPI Controller Register Summary Table 2-1. SPI Controller Register SummaryRESET SPI Controller Register DefinitionsSPIDATA Register Table 2-2. SPIDATA RegisterInterrupt Request Enable CTL RegisterRESET Phase SelectTable 2-6. SPISTAT Register SPISTAT RegisterRESET Table 2-7. SPISTAT Register DefinitionsRESET SPISSEL RegisterTable 2-10. BCNT Bit Settings SelectO SignalRESET DVDCNTRLO RegisterDVDCNTRHI RESETFeatures 3 I2C ControllerFigure 3-1. DSTni I2C Controller Block Diagram Block DiagramI2C Background Theory of OperationMaster Transmit Mode I2C ControllerOperating Modes I2C State Table 3-1. Master Transmit Status CodesCode Microprocessor ResponseServicing the Interrupt Table 3-2. Codes After Servicing Interrupts Master TransmitAll Bytes Transmit Completely Transmitting Each Data ByteTable 3-3. Status Codes After Each Data Byte Transmits Master Receive ModeI 2C State Table 3-4. Master Receive Status CodesCode Microprocessor ResponseServicing the Interrupt Table 3-5. Codes After Servicing Interrupt Master ReceiveSlave Transmit Mode Receiving Each Data ByteTable 3-6. Codes After Receiving Each Data Byte Slave Receive Mode Clock Synchronization Bus Clock ConsiderationsBus Clock Speed Bus ArbitrationResetting the I2C Controller Programmer’s ReferenceI2C Controller Register Summary Table 3-7. I 2C Controller Register SummaryRESET I2C Controller Register DefinitionsSlave Address Register General Call Address EnableData Register Table 3-10. Data RegisterTable 3-13. Control Register Definitions Control RegisterTable 3-12. Control Register Extended Slave AddressStatus Register Table 3-14. Status RegisterField Name Table 3-15. Status Register DefinitionsBits DescriptionTable 3-18. Clock Control Register Definitions Clock Control RegisterTable 3-17. Clock Control Register Table 3-21. Software Reset Register Software Reset RegisterExtended Slave Address Register Table 3-22. Software Reset Register Definitions4 USB Controller FeaturesUSB Core USB BackgroundUSB Interrupt Theory of OperationMicroprocessor Interface USB Hardware/Software InterfaceDigital Phase Lock Loop Logic Buffer Descriptor TableFigure 4-1. Buffer Descriptor Table Rx vs. Tx as a Target Device or HostTable 4-2. 16-Bit USB Address Table 4-1. USB Data DirectionAddressing BDT Entries Table 4-3. 16-Bit USB Address DefinitionsMicroprocessor Determines… Table 4-4. BDT Data Used by USB Controller and MicroprocessorUSB Controller Determines… Table 4-5. USB Buffer Descriptor FormatDATA0/1 Transmit or Receive Table 4-6. USB Buffer Descriptor Format DefinitionsBD Owner USB OwnershipUSB Transaction Figure 4-2. USB Token TransactionDedicated to host mode USB Register SummaryTable 4-7. USB Register Summary Table 4-8. Interrupt Status Register USB Register DefinitionsInterrupt Status Register Table 4-9. 16- Interrupt Status Register DefinitionsError Condition Enable/Disable USBRST InterruptSleep Timer USB ResetTable 4-11. 16- Error Interrupt Status Register Definitions Error RegisterTable 4-10. Error Interrupt Status Register CRC16 Failure Error interrupt with two functionsData Field Received Not 8 Bits PID check field failedStatus Register Live USB Differential Receiver JSTATE SignalLive USB Single Ended Zero Signal Table 4-12. Status RegisterResume Signaling USB Reset SignalHost Mode Enable valid for host mode only BDT PDD ResetTable 4-15. 16- Address Register Definitions Address RegisterTable 4-14. Address Register Table 4-16. Frame Number Register Frame Number RegistersRESET Table 4-17. Frame Number Register DefinitionsToken Register Table 4-18. Token Register RESETEndpoint for Token Command Table 4-19. Token Register DefinitionsTable 4-21. Endpoint Control Registers Endpoint Control RegistersEndpoint Enable Table 4-22. Endpoint Control Register DefinitionsHost Mode Operation Table 4-23. Endpoint Control Register DefinitionsSample Host Mode Operations Figure 3. Enable Host Mode and Configure a Target DeviceFigure 4. Full-Speed Bulk Data Transfers to a Target Device USB Pull-up/Pull-down Resistors Figure 4-5. Pull-up/Pull-down USBHOST Mode Enable USB Interface SignalsUSB Output Enable Clock CLK5 CAN Controllers Data Exchanges and Communication Arbitration and Error CheckingCANBUS Background Table 5-1. Bit Rates for Different Cable Lengths CANBUS Speed and LengthFeatures Hex Offset CAN Register SummariesRegister Summary RegisterHex Offset RegisterDetailed CAN Register Map Table 5-4. Detailed CAN Register MapAcceptance Filter Enable Register Hex OffsetRegister Figure 5-1. TX Message Routing CAN Register DefinitionsTX Message Registers Sending a MessageTable 5-6. TxMessage0ID12 Tx Message RegistersTable 5-5. TxMessage0ID28 Table 5-7. TxMessage0DataMessage Identifier for Both Standard and Extended Messages Table 5-12. TxMessage0Ctrl FlagsTable 5-13. TxMessage0 Register Definitions Message DataRX Message Registers Figure 5-2. RX Message RoutingTable 5-15. Rx Message ID28 Register Definitions Rx Message RegistersTable 5-14. RxMessageID28 Table 5-16. RxMessageID12Table 5-22. Rx Message Data Table 5-20. Rx Message DataTable 5-21. Rx Message Data 39 Register Definitions Table 5-23. Rx Message Data 23 Register DefinitionsTable 5-28. Rx Message Msg Flags Table 5-26. RxMessage RTRTable 5-27. Rx Message RTR Register Definitions Table 5-29. Rx Message Msg Flags Register DefinitionsTable 5-31. Tx\Rx Error Count Register Definitions Error Count and Status RegistersTable 5-30. Tx/Rx Error Count Table 5-32. Error StatusReserved Table 5-34. Tx/Rx Message Level RegisterTable 5-35. Tx/Rx Message Level Register Definitions rxlevel10CRC Error Interrupt FlagsNote The reset value of this register’s bits is indeterminate Format ErrorTable 5-39. Interrupt Enable Register Definitions Interrupt Enable RegistersTable 5-38. Interrupt Enable Registers Bus Off State − int2n group error interruptsTable 5-41. Interrupt Enable Register Definitions CAN Operating ModeTable 5-40. Interrupt Enable Registers Overload Condition − int3n group diagnostic interruptsFigure 5-3. CAN Operating Mode CAN Configuration RegistersConfiguration Bit Rate Table 5-42. Bit Rate Divisor RegisterOverwrite Last Message Table 5-44. Configuration RegisterTable 5-45. Configuration Register Definitions Cfgsjwtseg2 + Bit Timetseg1 + time quanta TQTable 5-47. Acceptance Filter Enable Register Definitions Acceptance Filter and Acceptance Code MaskTable 5-46. Acceptance Filter Enable Register Table 5-48. Acceptance Mask 0 RegisterTable 5-52. Acceptance Mask Register Data Table 5-50. Acceptance Mask Register IDTable 5-51. Acceptance Mask Register ID12 Definitions Message DataTable 5-56. Acceptance Mask Register ID12 Table 5-54. Acceptance Code RegisterTable 5-55. Acceptance Code Register Definitions Table 5-57. Acceptance Mask Register ID12 DefinitionsTable 5-60. Arbitration Lost Capture Register CANbus AnalysisArbitration Lost Capture Register Table 5-61. Arbitration Lost Capture Register DefinitionsTable 5-63. Error Capture Register Definitions Error Capture RegisterTable 5-62. Error Capture Register ErrorcodeFrame Reference Register Note The reset value of this register’s bits is indeterminateTable 5-65. Error Capture Register Definitions Table 5-64. Frame Reference RegisterFigure 5-6. CAN Connector CAN Bus InterfaceInterface Connections Figure 5-5. CAN Bus InterfaceGNDCAN Figure 5-7. Power for CAN+5CAN +24VFigure 5-8. CAN Transceiver and Isolation Circuits 0.01uf