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Texas Instruments TMS320TCI648x Port Link Maintenance Request CSR n SPnLMREQ, SP2LMREQ, SP3LMREQ

Models: TMS320TCI648x

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SRIO Registers

5.69 Port Link Maintenance Request CSR n (SPn_LM_REQ)

Each of the four ports is supported by a register of this type (see Table 140). SPn_LM_REQ is shown in Figure 132 and described in Table 141.

Table 140. SPn_LM_REQ Registers and the Associated Ports

Register	Address Offset	Associated Port
SP0_LM_REQ	1140h	Port 0
SP1_LM_REQ	1160h	Port 1
SP2_LM_REQ	1180h	Port 2
SP3_LM_REQ	11A0h	Port 3

Figure 132. Port Link Maintenance Request CSR n (SPn_LM_REQ)

31	3	2	0
Reserved			COMMAND
R-0			R/W-000
LEGEND: R/W = Read/Write; R = Read only; -n= Value after reset

Table 141. Port Link Maintenance Request CSR n (SPn_LM_REQ) Field Descriptions

Bit	Field	Value	Description
31–3	Reserved	0	These read-only bits return 0s when read.
2–0	COMMAND	000b–111b	A write to this register generates a link-request control symbol on the corresponding
			port interface. Command to be sent in the link-request control symbol. When read,
			this field returns the last written value.

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Serial RapidIO (SRIO)

SPRUE13A –September 2006

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Texas Instruments TMS320TCI648x Port Link Maintenance Request CSR n SPnLMREQ, SPnLMREQ Registers and the Associated Ports

Contents

Users Guide Submit Documentation Feedback Contents Errrstevnticsr Port Link Maintenance Request CSR n SP n Lmreq List of Figures INTDSTnRATECNTL Interrupt Rate Control Register Transmit Cppi Supported Flow Mask Registers Port-Write-In Capture CSRs List of Tables PF16BCNTL Registers LSUnREG6 Registers and the Associated LSUs SP n Errdet Registers and the Associated Ports Read This First Trademarks General RapidIO System RapidIO Architectural HierarchyOverview Physical Layer 1x/4x LP-Serial Specification RapidIO Interconnect ArchitectureRapidIO Feature Support in Srio Features Supported in Srio PeripheralFeatures Not Supported Standards External Devices RequirementsTI Devices Supported By This Document TI Devices Supported By This DocumentOverview Peripheral Data FlowRegisters Checked for Multicast DeviceID Registers Checked For Multicast DeviceIDSrio Packets Operation SequenceOperation Sequence Example Packet Streaming WriteControl Symbols 4x RapidIO Packet Data Stream Streaming-Write ClassSrio Pins Srio Packet TypePacket Types Ftype Ttype Packet TypePin Description Component Block DiagramFunctional Operation Srio Component Block Diagram MPY Enpll Serdes Macro and its ConfigurationsEnabling the PLL Bit Field Value Description MPYLine Rate versus PLL Output Clock Frequency Effect of the Rate BitsFrequency Range versus MPY Value Enabling the ReceiverBit Field CDRLOS Align Term Invpair Rate Buswidth Enrx LOS CFGRX22-19 EQ BitsEnabling the Transmitter DE Bits of SERDESCFGTXnCNTL SwingAmplitude Reduction DE BitsSerdes Configuration Example Swing Bits of SERDESCFGTXnCNTLDirect I/O Operation Swing BitsLSU Control/Command Register Fields LSU Register Field RapidIO Packet Header FieldBSY LSU Status Register FieldsLSU Register Field Function LSU Registers Timing Example Burst Nwriter Detailed Data Path DescriptionDirect I/O TX Operation Write TransactionsRead Transactions Segmentation Direct I/O RX OperationReset and Power Down State Message PassingRX Operation Cppi RX Scheme for RapidIOMessage Request Packet RX DMA State Completion Pointer CP Address Offset 680h-6BCh Mailbox to Queue Mapping Register L n Rxumapl nMailbox to Queue Mapping Register H n Rxumaph n Bit Name DescriptionRX Buffer Descriptor Field Descriptions Field DescriptionDSP core uses this bit to reclaim buffers RX Cppi Mode Explanation Srio Functional Description Cppi Boundary Diagram TX OperationTX DMA State Completion Pointer CP Address Offset 58h-5BCh TX Buffer Descriptor Field DefinitionsTX Buffer Descriptor Field Definitions Field DescriptionSsize Srio Functional Description TXQUEUECNTL0 Address Offset 7E0h TXQUEUECNTL1 Address Offset 7E4hTXQUEUECNTL2 Address Offset 7E8h TXQUEUECNTL3 Address Offset 7EChTXQUEUECNTL13-0 TXQUEUECNTL17-4TXQUEUECNTL111-8 TXQUEUECNTL23-0TXQUEUECNTL311-8 TXQUEUECNTL33-0TXQUEUECNTL37-4 Reset and Power Down State TX Operation Message Passing Software RequirementsRX Operation RX Buffer Descriptor Initialization ExampleQueue Mapping RX Buffer Descriptors TX Buffer DescriptorDoorbell Operation MaintenanceStart Message Passing Examples of Doorbellinfo Designations See Figure Info Field SegmentsReg # Bit LSUnREG5Atomic Operations Congestion ControlDetailed Description Flowcntlid FL9 FL8 FL7 FL6 FL5 FL4 FL3 FL2 FL1 FL0Endianness FL9Translation for MMR space Endian Conversion TMS320TCI6482Reset and Power Down Reset HierarchyBus Logical BlockReset and Power Down Summary Enable and Enable Status RegistersGlobal Enable and Global Enable Status Field Descriptions Block Enable and Block Enable Status Field Descriptions EnstatRegisterBit Field Valu Description eSoftware Shutdown Details EmulationPeripheral Control Register PCR Field Descriptions Peren Soft FreeMultiple Ports With 1x Operation Peripheral Control Register PCR Field DescriptionsTX Buffers, Credit, and Packet Reordering Single Port With 1x or 4x Operation Unavailable Outbound Credit13.2 PLL, Ports, Device ID and Data Rate Initializations Port Mode Register SettingsEnabling the Srio Peripheral Peripheral Initializations Set Device ID RegistersAssert the Peren bit to enable logical layer data flow Bootload CapabilityConfiguration and Operation Read register to check portx1-4 OK bitRX Multicast Support Bootload Data MovementDevice Wakeup Multicast DeviceID Operation Daisy Chain Operation and Packet ForwardingEnabling Multicast and Packet Forwarding 16BITDEVIDUPBOUND 16BITDEVIDLOWBOUNDOutbound Port8BITDEVIDUPBOUND 8BITDEVIDLOWBOUNDFor an LSU or the TXU For the MAU or the RXUMsgreqtimeout PktrspnstimeoutRxiodmaaccess UnsolicitedrspnsCPU Interrupts General DescriptionInterrupt Condition Status and Clear Registers Interrupt Condition Status and Clear Bits Doorbell Interrupt Condition Status and Clear RegistersDoorbell 2 Interrupt Condition Status and Clear Registers Cppi Interrupt Condition Status and Clear RegistersRX Cppi Interrupt Condition Status and Clear Registers LSU Interrupt Condition Status and Clear RegistersBit Associated LSU Interrupt Condition LSU4LSU3 LSU2ICS11 ICS10 ICS9 ICS8 ICS2 ICS1 ICS0ICC11 ICC10 ICC9 ICC8 ICC2 ICC1 ICC01st Step Nd Step 3rd Step Interrupt Clearing Sequence for Special Event InterruptsInterrupt Function Interrupt Condition Routing Registers Interrupt Condition Routing OptionsDoorbell Interrupt Condition Routing Registers Interrupt Function St Step Nd Step Rd StepCppi Interrupt Condition Routing Registers ICR7 ICR6 ICR5 ICR4ICR3 ICR2 ICR1 ICR0 ICR15 ICR14 ICR13 ICR12TX Cppi Interrupt Condition Routing Registers LSU Interrupt Condition Routing RegistersICR23 ICR22 ICR21 ICR20 ICR19 ICR18 ICR17 ICR16ICR31 ICR30 ICR29 ICR28 ICR27 ICR26 ICR25 ICR24Interrupt Status Decode Registers ICR2 ICR1 ICR0Interrupt Status Decode Register INTDSTnDECODE Interrupt Generation Interrupt PacingInterrupt Handling INTDSTnRATECNTL Interrupt Rate Control Register101 Offset Acronym Register Description IntroductionSerial RapidIO Srio Registers Serial RapidIO Srio Registers Offset Acronym Register DescriptionINTDST3DECODE INTDST4DECODEINTDST5DECODE INTDST6DECODEQUEUE1TXDMAHDP QUEUE15RXDMAHDP QUEUE0RXDMACPQUEUE1RXDMACP QUEUE2RXDMACPRXUMAPL7 RXUMAPH7RXUMAPL8 RXUMAPH8RXUMAPL30 RXUMAPH30RXUMAPL31 RXUMAPH31SP1CTL Spipdiscoverytimer SP0SILENCETIMERSP1SILENCETIMER SP2SILENCETIMERPeripheral Identification Register PID Peripheral ID Register PID Field DescriptionsType Class REVPeripheral Control Register PCR HaltsPeripheral Settings Control Register Persetcntl Prescalerselect Enable Serdes PLL Peripheral Global Enable Register Gblen Peripheral Global Enable Register Gblen Field DescriptionsPeripheral Global Enable Status Register Gblenstat MMRs for the Srio peripheral Block n Enable Register BLKnEN Block n Enable Registers and the Associated BlocksBlock n Enable Register BLKnEN Field Descriptions Register Address Offset Associated BlockBlock n Enable Status Register BLKnENSTAT Block n Enable Status Registers and the Associated BlocksRapidIO DEVICEID1 Register DEVICEIDREG1 RapidIO DEVICEID1 Register DEVICEIDREG1 Field Descriptions8BNODEID 16BNODEIDRapidIO DEVICEID2 Register DEVICEIDREG2 RapidIO DEVICEID2 Register DEVICEIDREG2 Field DescriptionsPF16BCNTL Registers Register Address OffsetPacket Forwarding Register n for 8-Bit Device IDs PF8BCNTLn PF8BCNTL RegistersSERDESCFGRXnCNTL Registers and the Associated Ports Register Address Offset Associated PortVia a 50 pF capacitor to Vssa 127 Swing Invpair Rate Buswidth Entx SERDESCFGTXnCNTL Registers and the Associated PortsSERDESCFGTX3CNTL 129 Serdes Macro Configuration Register n SERDESCFGnCNTL SERDESCFGnCNTL Registers and the Associated Ports131 DOORBELLn Interrupt Condition Status Register DOORBELLnICSR Doorbell nICSR RegistersDOORBELLn Interrupt Condition Clear Register DOORBELLnICCR Doorbell nICCR RegistersRX Cppi Interrupt Status Register Rxcppiicsr RX Cppi Interrupt Clear Register Rxcppiiccr TX Cppi Interrupt Status Register Txcppiicsr TX Cppi Interrupt Clear Register Txcppiiccr LSU Interrupt Condition Status Register Lsuicsr ICS31139 140 LSU Interrupt Condition Clear Register Lsuiccr 31-17 Reserved These reserved bits return 0s when read Errrstevnticcr Field Descriptions Doorbell nICRR Registers Field Value Description= 0 to Eight interrupt destinations INTDST0-INTDST7 146 LSU Interrupt Condition Routing Registers LSUICRR0-LSUICRR3 LSU Interrupt Condition Routing Register Field Descriptions = 0 to 2, 8 to 11, Interrupt destinations INTDST0-INTDST7 Interrupt Status Decode Register INTDSTnDECODE DestinationTX buffer descriptor queue 4 bit 4 of Txcppiicsr ∙ Doorbell 0, bit 15 bit 15 of DOORBELL0ICSR ISD1 ISD3ISD2 INTDSTn Interrupt Rate Control Register INTDSTnRATECNTL CountdownvalueLSUn Control Register 0 LSUnREG0 LSUnREG0 Registers and the Associated LSUsLSUn Control Register 0 LSUnREG0 Field Descriptions AddressmsbFor packet type 8 maintenance packet LSUn Control Register 1 LSUnREG1LSUnREG1 Registers and the Associated LSUs LSUn Control Register 1 LSUnREG1 Field DescriptionsLSUn Control Register 2 LSUnREG2 LSUnREG2 Registers and the Associated LSUsLSUn Control Register 2 LSUnREG2 Field Descriptions DspaddressLSUn Control Register 3 LSUnREG3 LSUnREG3 Registers and the Associated LSUsLSUn Control Register 3 LSUnREG3 Field Descriptions BytecountLSUn Control Register 4 LSUnREG4 Field Descriptions LSUn Control Register 4 LSUnREG4LSUnREG4 Registers and the Associated LSUs LSUn Control Register 5 LSUnREG5 Field Descriptions LSUn Control Register 5 LSUnREG5LSUnREG5 Registers and the Associated LSUs LSUn Control Register 6 LSUnREG6 LSUnREG6 Registers and the Associated LSUsLSUn Control Register 6 LSUnREG6 Field Descriptions Completioncode BSYLSUn Congestion Control Flow Mask Register LSUnFLOWMASKS LSUnFLOWMASKS Registers and the Associated LSUsLSU n supports Flow 8 from table entry QUEUEnTXDMAHDP Registers RegisterQUEUEnTXDMACP Registers QUEUEnRXDMAHDP Registers QUEUEnRXDMACP Registers RxcpTransmit Queue Teardown Register Txqueueteardown Txcppiflowmasks Registers and the Associated TX Queues TX Queue n Flowmask Field Descriptions Queue n supports Flow 12 from table entry Receive Queue Teardown Register Rxqueueteardown Receive Cppi Control Register Rxcppicntl Receive Cppi Control Register Rxcppicntl Field DescriptionsTXQUEUECNTL0 Address Offset 07E0h TXQUEUECNTL1 Address Offset 07E4hTXQUEUECNTL2 Address Offset 07E8h TXQUEUECNTL3 Address Offset 07EChField Pair TXQUEUECNTL211-8 Mailbox to Queue Mapping Registers RXUMAPLn and RXUMAPHn 0890h Mapper Lettermask For a single-segment messageFor a multi-segment message LetterQueueid SegmentmappingFlow Control Table Entry Register n FLOWCNTLn Flowcntl n RegistersDevice Identity CAR Devid Device Identity CAR Devid Field DescriptionsDeviceidentity Devicevendoridentity DeviceidentityDevice Information CAR Devinfo Device Information CAR Devinfo Field DescriptionsDevicerev 31-0Assembly Identity CAR Asblyid Assembly Identity CAR Asblyid Field DescriptionsAssyidentity Assyvendoridentity AssyidentityAssembly Information CAR Asblyinfo Assembly Information CAR Asblyinfo Field DescriptionsExtendedfeaturesptr AssyrevProcessing Element Features CAR Pefeat Processing Element Features CAR Pefeat Field DescriptionsSource and target of an operation. All PEs shall at minimum Source Operations CAR Srcop Source Operations CAR Srcop Field DescriptionsDestination Operations CAR Destop Destination Operations CAR Destop Field DescriptionsRead Write Streamwrite Writewith Datamess Doorbell Resp Andswap AtomicExtendedaddressingcontrol Processing Element Logical Layer Control CSR PellctlAddressing Bit Field Value Local Configuration Space Base Address 0 CSR LclcfghbarLcsba Local Configuration Space Base Address 1 CSR Lclcfgbar Base Device ID CSR Baseid Base Device ID CSR Baseid Field DescriptionsBasedeviceid LargebasedeviceidHost Base Device ID Lock CSR Hostbaseidlock HostbasedeviceidComponenttag Component Tag CSR ComptagComponent Tag CSR Comptag Field Descriptions Efptr Efid EfptrPort Link Time-Out Control CSR Spltctl Port Link Timeout Control CSR Spltctl Field DescriptionsTimeoutvalue Port Response Time-Out Control CSR Sprtctl Port General Control CSR Spgenctl Port General Control CSR Spgenctl Field DescriptionsPort Link Maintenance Request CSR n SPnLMREQ CommandSPnLMREQ Registers and the Associated Ports SP2LMREQPort Link Maintenance Response CSR n SPnLMRESP SPnLMRESP Registers and the Associated PortsPort Local AckID Status CSR n SPnACKIDSTAT SPnACKIDSTAT Registers and the Associated PortsSPnERRSTAT Registers and the Associated Ports Port Error and Status CSR n SPnERRSTATPort Error and Status CSR n SPnERRSTAT Field Descriptions Outputerrorenc OutputerrorstpInputerrorenc InputerrorstpPortok PortuninitializedPort Control CSR n SPnCTL Field Descriptions Port Control CSR n SPnCTLSPnCTL Registers and the Associated Ports Portdisable OutputportenableInputportenable ErrorcheckdisableRather than a parallel port Error Reporting Block Header Register Errrptbh Logical/Transport Layer Error Detect CSR Errdet RX I/O DMA access error Logical/Transport Layer Error Enable CSR Erren Pktresptimeoutenable UnsolicitedrespenableUnsupportedtransenable RxcppisecurityenableLogical/Transport Layer High Address Capture CSR Haddrcapt ADDRESS6332Xamsbs Logical/Transport Layer Address Capture CSR AddrcaptADDRESS313 Logical/Transport Layer Device ID Capture CSR Idcapt Msbdestid DestidMsbsourceid Sourceid MsbdestidLogical/Transport Layer Control Capture CSR Ctrlcapt Ftype Ttype MsginfoImpspecific FtypePort-Write Target Device ID CSR Pwtgtid Port-Write Target Device ID CSR Pwtgtid Field DescriptionsDeviceidmsb DeviceidSPnERRDET Registers and the Associated Ports Port Error Detect CSR n SPnERRDETPort Error Detect CSR n SPnERRDET Field Descriptions Protocolerror DelineationerrorLinktimeout RcvdpktnotaccptSPnRATEEN Registers and the Associated Ports Port Error Rate Enable CSR n SPnRATEENPort Error Rate Enable CSR n SPnRATEEN Field Descriptions Protocolerroren DelineationerrorenLinktimeouten PktunexpectedackidenPort n Attributes Error Capture CSR 0 SPnERRATTRCAPTDBG0 SPnERRATTRCAPTDBG0 Registers and the Associated PortsPort n Error Capture CSR 1 SPnERRCAPTDBG1 Description Case of a control-symbol errorCase of a packet error SPnERRCAPTDBG1 Registers and the Associated PortsPort n Error Capture CSR 2 SPnERRCAPTDBG2 SPnERRCAPTDBG2 Registers and the Associated PortsPort n Error Capture CSR 3 SPnERRCAPTDBG3 SPnERRCAPTDBG3 Registers and the Associated PortsPort n Error Capture CSR 4 SPnERRCAPTDBG4 SPnERRCAPTDBG4 Registers and the Associated PortsSPnERRRATE Registers and the Associated Ports Port Error Rate CSR n SPnERRRATEPort Error Rate CSR n SPnERRRATE Field Descriptions Port Error Rate Threshold CSR n SPnERRTHRESH SPnERRTHRESH Registers and the Associated PortsDiscoverytimer PwtimerPort IP Mode CSR Spipmode Port IP Mode CSR Spipmode Field DescriptionsRsten RstcsPwen PwirqPrescale Port IP Prescaler Register IpprescalPort IP Prescaler Register Ipprescal Field Descriptions Port-Write-In Capture CSRs SPIPPWINCAPT0-3 Port-Write-In Capture CSR Field DescriptionsPort Reset Option CSR n SPnRSTOPT Port Reset Option CSR n SPnRSTOPT Field DescriptionsSPnRSTOPT Registers and the Associated Ports PortidPort Control Independent Register n SPnCTLINDEP SPnCTLINDEP Registers and the Associated PortsSenddbgpkt IlltransenIlltranserr MaxretryenSilencetimer Port Silence Timer n Register SPnSILENCETIMERSPnSILENCETIMER Registers and the Associated Ports Bit Field Value Description 31-0 SPnMULTEVNTCS Registers and the Associated PortsMultevntcs Port Control Symbol Transmit n Register SPnCSTX SPnCSTX Registers and the Associated PortsSTYPE0 PAR0 PAR1 STYPE1 CMD Csemb STYPE0Index Comptag Ctrlcapt Devinfo Pellctl Haddrcapt Lsuicsr 237 Pefeat 232 Srio Registers Rxcppicntl Rxcppiiccr Rxcppiicrr RXCPPIICRR2 Rxcppiicsr Broken link Degraded link Maximum retry error at port n Txqueueteardown Xoff Xon Important Notice