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Texas Instruments TMS320C645x manual Operation Sequence, Example Packet Streaming Write

Models: TMS320C645x

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SRIO Functional Description

SRIO endpoints are typically not connected directly to each other but instead have intervening connection fabric devices. Control symbols are used to manage the flow of transactions in the SRIO physical interconnect. Control symbols are used for packet acknowledgment, flow control information, and maintenance functions. Figure 5 shows how a packet progresses through the system.

Figure 5. Operation Sequence

Initiator

Operation

Issued

Master

Request Packet

Acknowledge

Symbol

Operation

Completed

Master

Fabric

Acknowledge

Symbol

Request

Forwarded

Response

Packet

Forwarded

Acknowledge

Symbol

Target

Acknowledge

Symbol

Response

Issued

Target

Completes

Operation

2.1.2.2Example Packet – Streaming Write

An example packet is shown as two data streams in Figure 6. The first is for payload sizes of 80 bytes or less, while the second applies to payload sizes of 80 to 256 bytes. SRIO packets must have a length that is an even integer of 32 bits. If the combination of physical, logical and transport layers has a length that is an integer of 16 bits, a 16-bit pad of value 0x0000 is added to the end of the packet, after the CRC (not shown). Bit fields that are defined as reserved are assigned to logic 0s when generated and ignored when received. All request and response packet formats are described in the I/O and Message Passing Logical Specifications.

SPRU976 –March 2006

Serial RapidIO (SRIO)

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Texas Instruments TMS320C645x manual Operation Sequence, Example Packet Streaming Write

Contents

Users Guide Submit Documentation Feedback Contents Errrstevnticrr Base Device ID CSR Baseid List of Figures Load/Store Module Interrupt Condition Routing Registers 150 Port Error Rate Threshold CSR n SP n Errthresh List of Tables LSUn Control Register 0 LSUnREG0 Field Descriptions Base Device ID CSR Baseid Field Descriptions Read This First RapidIO Architectural Hierarchy General RapidIO SystemOverview 3 1x/4x LP-Serial RapidIO Interconnect ArchitectureFeatures Supported in Srio RapidIO Feature Support in SrioStandards Features Not SupportedExternal Devices Requirements RapidIO Documents and LinksPeripheral Data Flow OverviewOperation Sequence Srio PacketsExample Packet Streaming Write Operation Sequence4x RapidIO Packet Data Stream Streaming-Write Class Control SymbolsSrio Packet Ftype/Ttype Packet TypeFtype Ttype Packet Type Block Diagram Srio PinsFunctional Operation Pin DescriptionSrio Conceptual Block Diagram Enabling the PLL Serdes and its ConfigurationsBits of Serdescfg nCNTL Register 0x120 0x12c Bit Name Value DescriptionBits of Serdescfg nCNTL Register 0x120 0x12c Line Rate versus PLL Output Clock FrequencyRate Bit Effects Frequency Range versus MPY Enabling the ReceiverBits of Serdescfgrx nCNTL Registers Disabled. Loss of signal detection disabled Bits of SERDESCFGRXnCNTL RegistersBit Field Value Description 1514 Enabling the Transmitter EQ BitsBits of Serdescfgtx nCNTL Registers CFGRX2219 Low Freq GainBits of Serdescfgtx nCNTL Registers Swing BitsDE Bits DirectIO Serdes Configuration ExampleRapidIO Packet Header Field Control/Command Register Field MappingStatus Fields Control/Command Register RapidIO Packet Header FieldStatus Field Function BSYLSU Registers Timing Detailed Data Path Description Example Burst NwriterWrite Transactions TX OperationRead Transactions RX Operation SegmentationMessage Passing Reset and Power Down StateCppi RX Scheme for RapidIO Queue Mapping Table Address Offset 0x0800 0x08FC Bit Name Description Queue Mapping Register Rxumapl nRX Buffer Descriptor Fields Field Description RX Buffer Descriptor Field DescriptionsField Description RX Buffer Descriptor Field DescriptionsRX Cppi Mode Explanation Cppi Boundary Diagram TX Buffer Descriptor Field Definitions TX Buffer Descriptor FieldsUses this bit to reclaim buffers Ssize TXQUEUECNTL0- Address Offset 0x7E0 Name Bit Access Reset Value DescriptionTXQUEUECNTL1- Address Offset 0x7E4 TXQUEUECNTL2- Address Offset 0x7E8TXQueueMap10 2316 0x0A Detailed Data Path Description Message Passing Software Requirements RX OperationTX Operation Initialization Example Queue MappingRX Buffer Descriptor NDP TX Buffer DescriptorStart Message Passing MaintenanceDoorbell Operation DoorbellDetailed Description Congestion ControlName Bit Transmit Source Flow Control Masks Endianness Configuration Bus ExampleDMA Example ResetReset Summary Enable and Enable Status RegistersBLK8ENSTA BLK7ENSTA Enstat Enable and Enable Status Bit Field DescriptionsGblen BLK0ENBLK1ENSTAT BLK1ENBLK2EN BLK2ENSTATEmulation Software Shutdown DetailsBLK8ENSTAT Peren Soft FreeEmulation Control Signals Enabling the Srio PeripheralsPeren 11.2 PLL, Ports, Device ID and Data Rate Initializations Peripheral InitializationsSet Device ID Registers Read register to check portx1-4 OK bit Assert the Peren bit to enable logical layer data flowConfiguration Bootload CapabilityBootload Data Movement Device WakeupERR MSG REQGeneral Description CPU InterruptsInterrupt Condition Control Registers Interrupt Source Configuration Options Where ICS0 Doorbell1, bit 0, through ICS15 Doorbell1, bit Interrupt Conditions LSU Interrupt Condition Clear Registers Iccr Address Offset ICS2 ICS1 ICS0 ICS11 ICS10 ICS9 ICS8ICC11 ICC10 ICC9 ICC8 ICC2 ICC1 ICC0DOORBELL0ICRR2 Address Offset Interrupt Condition Routing OptionsLSUICRR1 Address Offset 0x02E4 LSUICRR2 Address Offset 0x02E8LSUICRR3 Address Offset 0x02EC ERRRSTEVNTICRR2 Address Offset 0x02F4 Interrupt Status Decode RegistersERRRSTEVNTICRR3 Address Offset 0x02F8 ICR2 ICR1 ICR0Sharing of Isdr Bits Interrupt Generation Interrupt PacingISDR3 ISDR2 ISDR1 ISDR9 ISDR8 ISDR7 ISDR6 ISDR5 ISDR4 ISDR0 INTDSTnRATECNTL Interrupt Rate Control Register Interrupt HandlingInterrupt Conditions Introduction Serial Rapid IO Srio RegistersOffset Acronym Register Description Offset Acronym Register Description Serial Rapid IO Srio RegistersErrrstevntic LSUICRR3RR2 RR3LSU3REG1 QUEUE2TXDMAC QUEUE1TXDMACQUEUE3TXDMAC QUEUE4TXDMACQUEUE12RXDMA SKS6 TxcppiflowmaSKS7 RxqueuetearRXUMAPH18 RXUMAPL18RXUMAPL19 RXUMAPH19Asblyinfo AsblyidPefeat SrcopPTDBG0 SP0ERRATTRCASP0ERRCAPTDB SP0ERRRATESP3ERRRATE TimerSP3ERRTHRESH SpipdiscoveryPeripheral ID Register PID Field Descriptions Peripheral Identification Register PIDType Class REVPeripheral Control Register PCR Field Descriptions Peripheral Control Register PCRPere Soft Free Bit FieldPeripheral Settings Control Register Persetcntl 1XMODE CbatransprPrescalerse LectENPLL3 ENPLL2ENPLL1 Peripheral Global Enable Register Gblen Field Descriptions Peripheral Global Enable Register GblenGBL Peripheral Global Enable Status Register GblenstatENS TATBlock n Enable Register BLKnEN Field Descriptions Block n Enable Register BLKnENBlock n Enable Status Register BLKnENSTAT Block n Enable Status Register BLKnENSTATRapidIO DEVICEID1 Register DEVICEIDREG1 Field Descriptions RapidIO DEVICEID1 Register DEVICEIDREG18BNODEID 16BNODEIDRapidIO DEVICEID2 Register DEVICEIDREG2 Field Descriptions RapidIO DEVICEID2 Register DEVICEIDREG2Packet Forwarding Register n for 16b DeviceIDs PF16BCNTLn Packet Forwarding Register n for 8b DeviceIDs PF8BCNTLn Term Invpa Rate Buswidth CDR LOS AlignCFGRX2219 Low Freq Gain Zero Freq at e28 min Enft Swing Invpa Rate BuswidthEntx DE Bits Swing BitsCFGTX119 Amplitude mV dfpp CFGTX1512 Amplitude ReductionMPY Enpll Serdes Macro Configuration Register n SERDESCFGnCNTLRIOCLK/RIOCLK MPYDOORBELLn Interrupt Status Register DOORBELLnICSR DOORBELLn Interrupt Status Register DOORBELLnICSRDOORBELLn Interrupt Clear Register DOORBELLnICCR DOORBELLn Interrupt Clear Register DOORBELLnICCRRX Cppi Interrupt Status Register Rxcppiicsr RX Cppi Interrupt Status Register RxcppiicsrRX Cppi Interrupt Clear Register Rxcppiiccr RX Cppi Interrupt Clear Register RxcppiiccrTX Cppi Interrupt Status Register Txcppiicsr TX Cppi Interrupt Status Register TxcppiicsrTX Cppi Interrupt Clear Register Txcppiiccr TX Cppi Interrupt Clear Register TxcppiiccrLSU Status Interrupt Register Lsuicsr LSU Status Interrupt Register Lsuicsr Field DescriptionsICS31-0 Load/Store module interrupt condition status bits LSU Clear Interrupt Register LSU Iccr LSU Clear Interrupt Register LSU Iccr Field DescriptionsICS31-0 Load/Store module interrupt clear bits 31-17 126 DOORBELLn Interrupt Condition Routing Register DOORBELLnICRR 128 ICR RX Cppi Interrupt condition routing bits RX Cppi Interrupt Condition Routing Register Rxcppi IcrrRX Cppi Interrupt Condition Routing Register Rxcppi ICRR2 RX Cppi Interrupt Condition Routing Register Rxcppi ICRR2ICR TX Cppi Interrupt condition routing bits TX Cppi Interrupt Condition Routing Register Txcppi IcrrTX Cppi Interrupt Condition Routing Register Txcppi ICRR2 TX Cppi Interrupt Condition Routing Register Txcppi ICRR2ICR LSU Module Interrupt Condition Routing Register 0 LSUICRR0LSU Module Interrupt Condition Routing Register 1 LSUICRR1 LSU Module Interrupt Condition Routing Register 1 LSUICRR1LSU Module Interrupt Condition Routing Register 2 LSUICRR2 LSU Module Interrupt Condition Routing Register 2 LSUICRR2LSU Module Interrupt Condition Routing Register 3 LSUICRR3 LSU Module Interrupt Condition Routing Register 3 LSUICRR3Errrstevnticrr Field Descriptions ErrrstevnticrrICR11 ERRRSTEVNTICRR2 Field DescriptionsERRRSTEVNTICRR3 Field Descriptions ERRRSTEVNTICRR3INTDSTn Interrupt Status Decode Registers INTDSTnDECODE INTDSTn Interrupt Status Decode Registers INTDSTnDECODECountdownvalue INTDSTn Interrupt Rate Control Registers INTDSTnRATECNTLCountdown ValueLSU n Control Register 0 LSU nREG0 Field Descriptions LSUn Control Register 0 LSUnREG0Addressmsb Bit Ext address fieldsAddresslsb Configoffse T AddresslsbconfigoffsetLSUn Control Register 1 LSUnREG1 LSU n Control Register 1 LSU nREG1 Field DescriptionsLSU n Control Register 2 LSU nREG2 Field Descriptions LSUn Control Register 2 LSUnREG2Dspaddress 32b DSP byte addressLSUn Control Register 3 LSUnREG3 LSU n Control Register 3 LSU nREG3 Field DescriptionsBytecount LSUn Control Register 4 LSUnREG4 Field Descriptions LSUn Control Register 4 LSUnREG4LSU n Control Register 5 LSU nREG5 Field Descriptions LSUn Control Register 5 LSUnREG5Drbllinfo Hopcount PackettypeLSUn Control Register 6 LSUnREG6 Field Descriptions LSUn Control Register 6 LSUnREG6Completioncode BSY CompletioncFlowmask LSU Congestion Control Flow Mask n Lsuflowmasks nTxhdp Txcp Rxhdp Queue Receive DMA Completion Pointer Registers QUEUEnRXDMACP Queue Receive DMA Completion Pointer Registers QUEUEnRXDMACPTransmit Queue Teardown Register Txqueueteardown QUEUE3FLOWMASK QUEUE2FLOWMASK QUEUE1FLOWMASK QUEUE0FLOWMASKQUEUE5FLOWMASK QUEUE4FLOWMASK QUEUE7FLOWMASK QUEUE6FLOWMASKMask QUEUE15FLOWMASK QUEUE14FLOWMASKReceive Queue Teardown Register Rxqueueteardown Receive Queue Teardown Register RxqueueteardownReceive Cppi Control Register Rxcppicntl Field Descriptions Receive Cppi Control Register Rxcppicntl3NUMMSGS Txqueuemap3QUEUEPTR 2NUMMSGS7QUEUEPTR 7NUMMSGS6NUMMSGS 6QUEUEPTR11QUEUEPTR 11NUMMSGS10NUMMSGS 10QUEUEPTR15QUEUEPTR 15NUMMSGS14NUMMSGS 14QUEUEPTRMailbox-to-Queue Mapping Register Ln RXUMAPLn Mailbox-to-Queue Mapping Register Hn RXUMAPHn Flowcntlid Flow Control Table Entry Registers FLOWCNTLnDevice Identity CAR Devid Field Descriptions Device Identity CAR DevidDevice Information CAR Devinfo Field Descriptions Device Information CAR DevinfoDevicerev Vendor supply device revisionAssembly Identity CAR Asblyid Field Descriptions Assembly Identity CAR AsblyidAssembly Information CAR Asblyinfo Field Descriptions Assembly Information CAR AsblyinfoProcessing Element Features CAR Pefeat Field Descriptions Processing Element Features CAR PefeatSource Operations CAR Srcop Field Descriptions Source Operations CAR SrcopDestination Operations CAR Destop Field Descriptions Destination Operations CAR DestopExtendedaddress Processing Element Logical Layer Control CSR PellctlIngcontrol RessingcontLcsba Local Configuration Space Base Address 0 CSR LclcfghbarLocal Configuration Space Base Address 1 CSR Lclcfgbar Local Configuration Space Base Address 1 CSR LclcfgbarBase Device ID CSR Baseid Field Descriptions Base Device ID CSR BaseidHostbasedeviceid Host Base Device ID Lock CSR HostbaseidlockHostbasede ViceidComponent Tag CSR Comptag Component Tag CSR Comptag Field DescriptionsComponenttag Efid EfptrPort Link Time-Out Control CSR Spltctl Port Link Timeout Control CSR Spltctl Field DescriptionsPort Response Time-Out Control CSR Sprtctl Port Response Time-Out Control CSR SprtctlPort General Control CSR Spgenctl Field Descriptions Port General Control CSR SpgenctlCommand Port Link Maintenance Request CSR n SPnLMREQPort Link Maintenance Response CSR n SPnLMRESP Port Local AckID Status CSR n SPnACKIDSTAT Port Error and Status CSR n SPnERRSTAT Field Descriptions Port Error and Status CSR n SPnERRSTATPortok PortuninitiaLized Port Control CSR n SPnCTL Field Descriptions Port Control CSR n SPnCTLNable Port Control CSR n SP nCTL Field DescriptionsError Reporting Block Header Errrptbh Field Descriptions Error Reporting Block Header ErrrptbhLogical/Transport Layer Error Detect CSR Errdet Logical/Transport Layer Error Enable CSR Erren Logical/Transport Layer High Address Capture CSR Haddrcapt ADDRESS633250 bit addresses Logical/Transport Layer Address Capture CSR Addrcapt ADDRESS313Xamsbs Msbdestid Destid Logical/Transport Layer Device ID Capture CSR IdcaptMsbsourceid Sourceid MsbdestidFtype Ttype Msginfo Logical/Transport Layer Control Capture CSR CtrlcaptImpspecific FtypePort-Write Target Device ID CSR Pwtgtid Field Descriptions Port-Write Target Device ID CSR PwtgtidDeviceidmsb DeviceidPort Error Detect CSR n SPnERRDET Field Descriptions Port Error Detect CSR n SPnERRDETPort Error Rate Enable CSR n SPnRATEEN Field Descriptions Port Error Rate Enable CSR n SPnRATEENPort n Attributes Error Capture CSR 0 SPnERRATTRCAPTDBG0 CAPTURE0 CAPTURE0CAPTURE1 CAPTURE1CAPTURE2 CAPTURE2CAPTURE3 CAPTURE3Port Error Rate CSR n SPnERRRATE Field Descriptions Port Error Rate CSR n SPnERRRATEPort Error Rate Threshold CSR n SPnERRTHRESH Discoverytimer Port IP Discovery Timer in 4x mode SpipdiscoverytimerPwtimer DiscoverytiPort IP Mode CSR Spipmode Field Descriptions Port IP Mode CSR SpipmodeRsten Port IP Mode CSR Spipmode Field DescriptionsSerial Port IP Prescalar Ipprescal Serial Port IP Prescalar Ipprescal Field DescriptionsPrescale Pwcapt Port-Write-In Capture CSR n SPIPPWINCAPTnPort Reset Option CSR n SPnRSTOPT Port Reset Option CSR n SP nRSTOPT Field DescriptionsPortid Port Control Independent Register n SPnCTLINDEP Maxretryer MaxretryenMaxretryth IrqenPort Silence Timer n SPnSILENCETIMER Port Silence Timer n SPnSILENCETIMER Field DescriptionsSilencetimer Multevntcs MultevntcsPort Control Symbol Transmit n SP nCSTX Field Descriptions Port Control Symbol Transmit n SPnCSTXImportant Notice