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Motorola DSP56301 Mapping the Control Registers, Data Transfer Methods, Polling, Data Memory

Models: DSP56301

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Mapping the Control Registers

5.2Mapping the Control Registers

The I/O peripherals are controlled through registers mapped to the top 128 words of X-data memory ($FFFF80–$FFFFFF). Referred to as the internal I/O space, the control registers are accessed by move (MOVE, MOVEP) instructions and bit-oriented instructions (BCHG,

BCLR, BSET, BTST, BRCLR, BRSET, BSCLR, BSSET, JCLR, JSET, JSCLR, AND JSSET). The contents of the internal X I/O memory space are listed in Appendix B, Programming Reference, Table B-2.

$FFFFFF

$FFFF80 $FFF000

$FF0000

$0007FF

$000000

X Data Memory

Internal I/O

External

Internal

Reserved

External

Internal

X Data RAM

2K (default)

Peripheral Control Registers Memory Space

Figure 5-1.Memory Mapping of Peripherals Control Registers

5.3Data Transfer Methods

Peripheral I/O on the DSP56301 can be accomplished in three ways:

ν

ν

ν

Polling

Interrupts

DMA

5.3.1Polling

Polling is the easiest method for data transfers. When polling is chosen, the DSP56300 core continuously checks a specified register flag waiting for an event to happen. One example would be setting an overflow flag in one of the Timers. Once the event occurs, the DSP56301 is free to continue with its next task. However, while it is waiting for the event to occur, the

5-2	DSP56301 User’s Manual

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Motorola DSP56301 user manual Mapping the Control Registers, Data Transfer Methods, Polling, Data Memory

Contents

DSP56301 User’s Manual Revision 3, MarchHow to reach us USA/EUROPEJapan ASIA/PACIFICPage Page Contents Chapter Memory Configuration Chapter Core ConfigurationChapter Programming the Peripherals Chapter Host Interface HI32Chapter Enhanced Synchronous Serial Interface Essi Chapter Serial Communication Interface SCI Chapter a Bootstrap Program Chapter B Programming Reference Chapter Triple Timer ModuleIndex Figures DSP56301 User’s ManualXii Pulse Width Modulation Toggle Mode, TRM = DSP Control Register Dctr DSP PCI Control Register Dpcr Tables TablesEssi Clock Sources Manual Organization OverviewHigh True/Low True Signal Conventions Signal/Symbol Logic State Signal State VoltageManual Conventions Ground2Ground PIN is a generic term for any pin on the chipDSP56300 Core Features CE = MS = Program RAM Instruction Data RAM Switch Size Cache SizeSize Cache DSP56300 Core Functional Blocks Data ALUData ALU Registers Address Generation Unit AGUMultiplier-Accumulator MAC Program Control Unit PCU PLL and Clock Oscillator Jtag TAP and OnCE ModuleInternal Buses DSP56301 Switch Memory ConfigurationOn-Chip Memory Memory Expansion Area DMAExpansion Area General-Purpose Input/Output Gpio signals PeripheralsHost Interface HI32 Enhance Synchronous Serial Interface EssiTriple Timer Module Serial Communications Interface SCIRelated Documents and Web Sites DSP56301 DocumentationName Description Order Number DSP56300FM/ADDSP56301 Functional Signal Groupings Timers JTAG/OnCE PortEnhanced Synchronous Serial Interfaces ESSI0 ESSI1DSP56301 See -2for a listing of the Host Interface/Port B SignalsPort a Host Interface/Port B Detail Signal Diagram Power Power InputsGround Signals GroundClock Signals Phase-Lock Loop SignalsClock PLLExternal Memory Expansion Port Port a External Address BusExternal Data Bus External Bus ControlSignals are tri-stated Arbitration is reset to the bus slave stateOutput Tri-stated Is an active-low output that is Output Tri-stated Is asserted for half a clockCAS BclkInterrupt and Mode Control Interrupt and Mode ControlSignal State Type During Signal Description Name Nonmaskable Interrupt-AfterHost Interface HI32 10.Host InterfaceCommand 0-3/Byte Enable 0-3 -When the HI32 is programmed HBS HparHdak HperrHserr HirqHstop HWR11.Summary of HI32 Signals and Modes Signal PCI Mode Enhanced Universal Bus Mode Gpio Mode NameHP8 HAD8 HD0 HIO8 HP9 HAD9 HD1 HIO9 HAD10 HD2 HIO10HAD11 HD3 HIO11 HAD12 HD4 HIO12PCI 12.Host Port Pins HI32Gpio Bus Command/Byte Enable Host Address Bus Host Target Ready Host Data Bus EnableReserved Host Initiator Ready Host Data Bus DirectionParity Error DMA Request Bus Grant Host Address EnableHost Device Select Host Select Acknowledge Host Lock Bus StrobeHost System Error Host Interrupt Request Bus Request Host Transfer AcknowledgeHreq is deasserted in the same PCI HstrHstop HWR/HRW Host Stop Host Write/Read-WriteHRD/HDS Initialization Device Select Host Read/Data StrobeHost Bus Clock Address/Data Multiplexed Bus Data BusHardware Reset Enhanced Synchronous Serial InterfaceHost Interrupt a Active low, open drain output pin13.Enhanced Synchronous Serial Interface PC0PC1 PC2SCK0 PC3SRD0 PC414.Enhanced Serial Synchronous Interface PD0PD1 PD2SCK1 PD3SRD1 PD4Serial Communications Interface SCI Timers15.Serial Communication Interface 16.Triple Timer Signals Timer 0 Schmitt-Trigger Input/Output- When TimerTimer 1 Schmitt-Trigger Input/Output- When Timer Timer 2 Schmitt-Trigger Input/Output- When timerJtag and OnCE Interface Signal Name Type State During Signal Description Reset17.JTAG/OnCE Interface Jtag and OnCE Interface DSP56301 User’s Manual Memory Configuration Program Memory SpaceInternal Program Memory Memory Switch Modes-Program MemoryInstruction Cache Program Bootstrap ROM Memory Switch Modes-X Data MemoryMemory Configuration Data Memory SpaceInternal I/O Space-X Data Memory Memory Switch Modes-Y Data MemoryInternal Y Data Memory Dynamic Memory Configuration Switching External I/O Space-Y Data MemorySixteen-Bit Compatibility Mode Configuration Internal Memory Configuration SummaryDSP56301 RAM Configurations DSP56301 RAM Address Ranges by ConfigurationMemory Maps DefaultRAM 16-Bit Space With Default RAM 0, 0 None 64K $000-$FFF $000-$7FF16M $000-$800 $000-$BFF16-Bit Space With Switched Program RAM 0, 1 None 64K $000-$7FF $000-$BFFInstruction Cache Enabled 1, 0 $000-$BFF $000-$7FF Not addressable16-Bit Space With Instruction Cache Enabled 1, 0 Addressable $000-$3FF $000-$BFF Not addressable$0400 $0000 Core Configuration Core ConfigurationReset Description Vector Operating ModesDSP56301 Operating Modes ModeOperating Mode Definitions Mode DescriptionLow. The DSP56301 is written with 24-bit-wide words Address attributes selected defaultDSP Clkout rate must be 5/3 of the PCI clock Bootstrap Program Central Processor Unit CPU Registers Status Register SRDMA OMR Cache Enable Sixteen-Bit Arithmetic ModeDo Forever Flag Do Loop FlagSixteen-Bit Compatibility Mode Scaling Mode Scaling Rounding Bit SEquation ModeInterrupt Mask Priority Exceptions Exceptions Masked PermittedBit Number Bit Name Reset Value Description Limit Scaling Mode Integer PortionExtension UnnormalizedOperating Mode Register OMR Operating Mode Register OMR Bit DefinitionsStack Extension Enable Stack Extension Wrap FlagAddress Trace Enable Address Attribute Priority DisableAsynchronous Bus Arbitration Enable Stack Extension Overflow FlagCache Burst Mode Enable Memory Switch ModeBus Release Timing Synchronize SelectConfiguring Interrupts Bit Number Bit Name Reset Value Description Stop Delay ModeExternal Bus Disable Chip Operating ModeInterrupt Priority Registers Iprc and Iprp Interrupt Priority Level Bits Interrupt Table Memory MapInterrupt Sources VBA$1A VBA$1CVBA$1E VBA$2AInterrupt Source Priorities Within an IPL Processing Interrupt Source Priorities Within an IPLPriority Interrupt Source Host command interrupt TIMER0 overflow interruptTIMER0 compare interrupt TIMER1 overflow interruptPLL Control Register Pctl PLL Control Register Pctl Bit DefinitionsBus Interface Unit BIU Registers Bus Control RegisterBus Default Area Wait State Control Bus Area 3 Wait State ControlBus Area 2 Wait State Control Bus Area 1 Wait State ControlDram Control Register DCR BRP BRF7 BRF6BRF3 BRF2 BRF1 Bstr Bren BME Bple BPS110.DRAM Control Register DCR Bit Definitions Bus Page Logic Enable Bus Dram Page SizeBus Row Out-of-page Wait States Bus Column In-Page Wait StateBus Address to Compare Address Attribute Registers AAR0-3Bus Number of Address Bits to Compare Bus Packing Enable Bus Y Data Memory EnableBus X Data Memory Enable Bus Program Memory EnableDMA Control Registers 5-0 DCR5-0 DIE DTM2 DTM1 DTM0Dcon DAM5 DAM4 DAM3 DAM2 DAM1 DAM0DMA Interrupt Enable DMA Transfer ModeDTM2-0 Trigger Cleared Transfer Mode After 12.DMA Control Register DCR Bit DefinitionsNumber Value DMA Channel PriorityDMA address generation logic, buses, and so forth DPR1-0 Channel PriorityOMR CDP1-0 CP1-0 Core Priority DMA Continuous Mode EnableDcon DMA Request Source Three-Dimensional ModeDRS4-0 Requesting Device DDS1 DDS0 Device Identification Register IDRDSS1 DSS0 Jtag Identification ID Register Jtag Boundary Scan Register BSRVersion Information Design Center Number Identity See NoteJtag Boundary Scan Register BSR DSP56301 User’s Manual Peripheral Initialization Steps Programming the PeripheralsMapping the Control Registers Data Transfer MethodsPolling Data MemoryInterrupts 3 DMA General-Purpose Input/Output GpioAdvantages and Disadvantages Port B Signals and Registers Host Interface/Port B Detail Signal DiagramPort D Signals and Registers Port C Signals and RegistersPort E Signals and Registers Triple Timer Signals and Registers Timer GpioGeneral-Purpose Input/Output Gpio DSP56301 User’s Manual Features Host Interface HI32HI32 Features, Core-Side and Host-Side HI32 Features in PCI Mode and Universal Bus Mode Overview PCI Configuration Space DSP-Side RegistersDSP DMA Data Bus DSP Global Data Bus Data transfer format converterData Transfer Paths Host-to-DSP Data PathDSP-To-Host Data Path HI32 PCI Master Data Transfer Formats DpmcFC1 FC0 Two least significant bytes of two HrxmHctr Transmit Data Transfer FormatHTF1 HTF0 Receive Transfer Data Formats DSP to Host Data Transfer FormatHRF Three least significant Hrxs bytesReceive Transfer Data Formats Reset States Type Entered when DescriptionDSP-Side Operating Modes HRST/HRSTTerminate and Reset Dctrhm = $0 PCI Mode Dctrhm = $1HI32 Mode PCIExample 6-1. PCI /DMA Throughput 32-Bit Multfactor Gpio Mode Dctrhm = $4 Self-Configuration Mode Dctrhm = $5Example 6-3. Self-Configuration Procedure for PCI Mode PCI Bus Universal Bus Mode Host Port PinsHost Port Pin Functionality DSP56301 ISA Master SlaveHI32 DSP-Side Programming Model Memory Register Address ModeHI32 Programming Model, DSP Side DSP Control Register Dctr Mode Description ValueBit Number Bit Name 10.DSP Control Register Dctr Bit Definitions Host Data Strobe Mode HtapHost Transfer Acknowledge Polarity Host Read/Write PolaritySlave Receive Interrupt Enable Slave Transmit Interrupt EnableHost Command Interrupt Enable DSP PCI Control Register DpcrInsert Address Enable Receive Buffer Lock Enable11.DSP PCI Control Register Dpcr Bit Definitions IAEMaster Wait State Disable Master Access Counter EnableForce HserrTransfer Complete Interrupt Enable Transaction Termination Interrupt EnableTransaction Abort Interrupt Enable Parity Error Interrupt EnableBL4 DSP PCI Master Control Register DpmcBL1 BL0 12.DSP PCI Master Control Register Dmpc Bit Definitions Data Transfer Format ControlA PCI DSP-to-Host transaction A PCI Host-to-DSP transactionPCI Data Burst Length DSP PCI Transaction Address HighDSP PCI Address Register Dpar 13.DSP PCI Address Register Dpar Bit DefinitionsBE2 BE1 AR9 AR8 AR7 AR6 AR5 AR4 AR3 AR2 AR1 AR0PCI Bus Command C3-0 Command TypeDSP PCI Transaction Address Low AR1 AR0Bit Bit Name Reset Mode Description Number Value DSP Status Register DSR14.DSP Status Register DSR Bit Definitions 2322212019181716Srrq UBM Slave Receive Data RequestMode Description Number Value Host Command Pending14. DSP Status Register DSR Bit Definitions Slave Transmit Data RequestDSP PCI Status Register Dpsr 15.DSP PCI Status Register Dpsr Bit DefinitionsRdcq MDT Hdtc Trty Tdis TAB MAB Aper Marq Mrrq Mtrq MWSMaster Data Transferred PCI Host Data Transfer CompletePCI Time Out Termination PCI Target RetryPCI Data Parity Error PCI Address Parity ErrorPCI Target Disconnect PCI Target AbortDSP Receive Data Fifo Drxr 15. DSP PCI Status Register Dpsr Bit DefinitionsPCI Master Wait States PCI Master Receive Data RequestDSP Master Transmit Data Register Dtxm DSP Slave Transmit Data Register DtxsDSP Host Port Gpio Data Register Dath DSP Host Port Gpio Direction Register Dirh16.DATH and Dirh Functionality 17.HI32 Programming Model, Host-Side Registers Host-Side Programming ModelMemory Register Host-Side Programming Model 18.PCI Bus Commands Executed as Command TypeHC3/HBE3-HC0/HBE0 Ignored21. Host-Side Registers Universal Bus Mode Address Space 20. Host-Side Registers PCI Configuration Address Space19. Host-Side Registers PCI Memory Address Space 1 HI32 Control Register Hctr 13.Host Interface Control Register HctrBit Bit Name Reset Mode Description Number Target Wait State Disable22.Host Interface Control Register Hctr Bit Definitions Twsd PCIHost Receive Data Transfer Format Host Transmit Data Transfer Format SFT UBM Inserted AddressSlave Fetch Type Universal Bus mode Fetch SFT = Cleared when the DSP56300 core writes toReset, and Strq and Hstrhrrq are cleared Data path is lost when the reset state isDmae Haen Dmae UBMHirq Receive Req uest Enable Rreq UBMDmae Treq Rreq Hirq Pin Hdrq pinHost Interface Status Register Hstr Hreq Hint HF5 HF4 HF3Trdy UBM UBM UBM UBM UBM UBM PCI PCI PCI PCI PCI PCI23.Host Interface Status Register Hstr Bit Definitions Host RequestHost interrupt a Treq Rreq HreqHost Transmit Data Request Host Receive Data RequestTransmitter Ready Host Command Vector Register Hcvr 15.Host Command Vector Register Hcvr24.Host Command Vector Register Hcvr Bit Definitions Host Command VectorBit Bit Name Reset Value Mode Description Number Hnmi UBMHost Command When the DSP56300 core acknowledges the host commandHost Master Receive Data Register Hrxm Host Slave Receive Data Register HrxsHost Transmit Data Register Htxr PCI Mode Dctrhm = $1 Universal Bus mode Dctrhm = $2 or $3Device ID/Vendor ID Configuration Register CDID/CVID Status/Command Configuration Register CSTR/CCMRDPE SSE RMA RTA STA DPR FbbcDetected Parity Error Signaled System ErrorSignalled Target Abort Received Master AbortSystem Error Enable Wait Cycle Control hardwired to zeroParity Error Response Bus Master EnableClass Code/Revision ID Configuration Register CCCR/CRID Header Type hardwired to $00 HT7 HT6 HT5 HT4 HT3 HT2 HT1 HT0HT7-0 Read-only bits that identify the layout of bytes $10-$3FCache Line Size Latency Timer HighCcls Memory Space Base Address Configuration Register Cbma Universal Bus Mode Base AddressPM8 PM7 PM6 PM5 PM4 MS1 MS0 MSI Memory Base Address High/Low29. Memory Space Base Address Configuration Register Cbma Memory Base Address Low Hardwired to zerosPre-Fetch Hardwired to zero Memory Space Hardwired to zerosExample 6-5. Code for Setting the Csid Interrupt Line-Interrupt Pin Configuration RegisterCILP IL5 IL4IL1 IL0 MaxlatHI32 Programming Model/Quick Reference HS PH PSDctr Hcie UBM HrspClrt Dpcr MtieRble Dpmc DparDSR HCP HactDpsr Aper DperHdtc RdcqTreq DmaeISA/EISA SFTHcvr HnmiHrxm HrxsCcmr RMA CccrChty Cbma MSIGDB DDB Rclk Rsma Rsmb Tsma Tclk STDTsmb TX0 CRA SC0Essi Enhancements Essi Data and Control Signals Serial Transmit Data Signal STDSerial Receive Data Signal SRD Serial Clock SCKSerial Control Signal SC0 Serial Control Signal SC1Control Bits Essi Signals Mode and Signal DefinitionsSYN TE0 TE1 TE2 SC0 SC1 SC2 SCK STD SRD Serial Control Signal SC2 Essi After ResetOperation InitializationExceptions Operation Write data to all enabled transmit registers Normal/Network/On-Demand Mode Selection Operating Modes Normal, Network, and On-DemandSynchronous/Asynchronous Operating Modes Frame Sync Signal FormatFrame Sync Selection Word Length Frame Sync and Data Word Timing Frame Sync Length for Multiple DevicesFrame Sync Polarity Byte Format LSB/MSB for the Transmitter FlagsEssi Programming Model Essi Control Register a CRAWL2 WL1 WL0 ALC PM7 PM6 PM5 PM4 PM3 PM2 PM1 PM0Essi Control Register a CRA Bit Definitions Select SC1Word Length Control Essi Word Length SelectionAlignment Control Frame Rate Divider ControlPrescaler Range Prescale Modulus SelectCRBTE1 CRBOF0 SSISRIF0 Crbsyn =Rclock TclockEssi Control Register B CRB ShfdOF1 OF0 ESSI0 X$FFFFB6, ESSI1 X$FFFFA6Essi Control Register B CRB Bit Definitions Transmit Interrupt Enable Receive EnableTransmit 0 Enable TIETransmit 1 Enable Transmit 2 EnableMode Select Synchronous/AsynchronousFSL1 FSL0 Serial Control Direction OF1Serial Output Flag OF0Serial Clock RX Frame Sync RX Serial Data Serial Clock RX, TX Frame Sync RX, TX Serial DataTX Frame Sync TX Serial Data CRB SYN Bit Operation Essi BitSSI Control Register B CRB READ/WRITE Bit OperationReceiver Interrupt or DMA Request and Flags Set Frame Sync FSL0 = 0, FSL1 = Data Out Flags Frame Sync FSL0 = 0, FSL1 = Data FlagsReceiver Overrun Error Flag Transmitter Underrun Error FlagEssi Status Register Ssisr Receive Data Register FullEssi Receive Shift Register Receive Frame Sync FlagTransmit Frame Sync Flag Serial Input FlagEssi Receive Data Register RX Essi Transmit Shift RegistersReceive Registers Transmit RegistersTransmit Middle Byte Transmit Low Byte Register 24 Bit WL0Least Significant MSBEssi Transmit Data Registers TX2-0 Essi Time Slot Register TSRTransmit Slot Mask Registers TSMA, Tsmb TS9 TS8 TS7 TS6 TS5 TS4 TS3 TS2 TS1 TS015.ESSI Transmit Slot Mask Register B Tsmb Receive Slot Mask Registers RSMA, Rsmb RS7 RS6RS1 RS0 RS15 RS14 RS13 RS12 RS11 RS10Gpio Signals and Registers Port Control Registers Pcrc and PcrdPort Direction Registers Prrc and Prrd Essi Port Signal ConfigurationsESSI0/ESSI1 Port Data Registers Pdrc and Pdrd 20.Port Data Registers Pdrc X$FFFFBD Pdrd X $FFFFADSerial Communication Interface SCI Serial Communication Interface SCIAsynchronous Mode Synchronous ModeMultidrop Mode I/O Signals Wired-OR ModeAddress Mode Wakeup Transmitting Data and Address CharactersTransmit Data TXD Receive Data RXDSCI Serial Clock Sclk SCI After Reset SCI Registers After ResetReie Sckp Stir Tmie TIE RIE Ilie Woms RWU Wake SBK SsftdSCI Initialization Preamble, Break, and Data Transmission Priority Bootstrap Loading Through the SCI Boot Mode 2 or a ExceptionsSCI Programming Model Bit Synchronous Data Shift Register Mode WDS2 WDS1 WDS0Bit Asynchronous 1 Start, 8 Data, 1 Stop Bit Asynchronous 1 Start, 8 Data, 1 Even Parity, 1 StopSCI Data Word Formats Ssftd = 0 Reie SCI Control Register SCRStir Tmie TIE RIE Ilie Woms RWU Wake SBK Ssftd WDS2 Timer Interrupt Enable SCI Transmit Interrupt EnableSCI Receive Interrupt Enable Idle Line Interrupt EnableWired-OR Mode Select Receiver EnableWoms Receiver Wakeup Enable Wakeup Mode SelectSend Break SCI Shift DirectionWord Select Mode Word FormatsWDS1 WDS0 SCI Status Register SCI Status Register SSR Bit Definitions SCI Status Register SSRIdle Rdrf Tdre Trne Tdre Idle Line FlagTransmitter Empty SCI Clock Control Register Sccr TCM RCM SCP CODTCM RCM SclkBit Counter Divide byCD11-0 Sckp = 0 + Sckp =RX, TX Data Ssftd = X1 Clock X16 Clock Sckp =SCI Receive Register SRX SCI Data RegistersSCI Receive Data Shift Register SCI Transmit Register STX PE2 PE1 PE0 Port E Control Register PcreSclk TXD RXD Port E Direction Register Prre Port E Data Register PdrePRRE1 PRRE0 PDRE1 PDRE0Gpio Signals and Registers DSP56301 User’s Manual Triple Timer Module Triple Timer ModuleTriple Timer Module Block Diagram Individual Timer Block DiagramGDB TpcrTimer After Reset Timer Module Block DiagramTimer Initialization Timer ExceptionsTCSR0 Tcie Triple Timer Modes Timer Gpio ModeTC3 TC2 TC1 TC0 TIOTLR Mode 0 internal clock, no timer output TRM =TCR Tcpr Mode 1 internal clock TRM = Timer Pulse ModeOutput Pulse width = timer clock Period Timer Toggle Mode Mode 2 internal clock TRM = 1 first eventToggle Timer = write preload = write compare Clock CLK/2 or prescale CLK= write preload Mode 2 internal clock TRM == write compare Clock CLK/2 or prescale CLK Timer Event Counter Mode Mode 3 internal clock TRM =Input External TIO Cpuclk +10.Event Counter Mode, TRM = = write compare ClockSignal Measurement Modes Measurement Input Width ModeInput Input width MeasurementMode 4 internal clock TRM = Mode 4 internal clock TRM = 1 first eventMeasurement Input Period Mode Mode 5 internal clock TRM =First event = write preload = write compare Input period Measurement InternalMay occur TOF=1 Counting, doesReads TCR period Measurement Capture Mode Mode 6 internal clock TRM =Interrupt Service reads TCR delay = M N clock periods InternalPWM Pulse Width Modulation PWM, ModePulse width modulation Mode 7 internal clock TRM = 16.Pulse Width Modulation Toggle Mode, TRM =17.Pulse Width Modulation Toggle Mode, TRM = Watchdog Pulse Mode Watchdog ModesPulse Watchdog Output InternalSoftware does not reset watchdog timer watchdog times out Mode 9 internal clock TRM == write preload First event Watchdog Toggle Mode Mode 10 internal clock TRM =Watchdog Output ToggleTriple Timer Module Programming Model Special CasesDMA Trigger Prescaler CounterTimer Prescaler Load Register Tplr23 22 21 20 19 18 17 Tplr = $FFFF83Timer Prescaler Load Register Tplr Prescaler SourcePS1 PS0 Prescaler Preload ValueTimer Prescaler Count Register Tpcr Timer Control/Status Register TcsrTCF TOF PCE TRM INVTimer Compare Flag Timer Overflow FlagPrescaler Clock Enable Data OutputDirection Timer Reload ModeInverter Timer Control Number FunctionTimer Compare Interrupt Enable Timer Overflow Interrupt EnableTimer Enable TIO Programmed as Input TIO Programmed as Output Mode INV =Pulse generated by Timer has Timer has negative Timer Load Register TLRPositive polarity Timer Compare Register Tcpr Timer Count Register TCRAppendix a DSP56301 User’s Manual HBS Can be stopped Hdben Aarv Mscte EQU LOOP0 Lbld Lble LOOP8 LOOP11 Rep Mac x0,x1,a x,lr0+ ORG PL,PL Patterns Write to Destination DSP56301 User’s Manual Chapter B Programming ReferenceTable B-1.Guide to Programming Sheets Table B-2. Internal I/O Memory Map X Data Memory Internal I/O Memory MapBit Address Register Name Table B-2.Internal I/O Memory Map X Data Memory Peripheral Bit Address Register Name$FFCD $FFFFCD $FFCC $FFFFCC$FFCB $FFFFCB $FFCA $FFFFCAEssi $FFBC $FFFFBC $FFBB $FFFFBB$FFBA $FFFFBA $FFB9 $FFFFB9Essi $FFAC $FFFFAC $FFAB $FFFFAB$FFAA $FFFFAA $FFA9 $FFFFA9$FFFF92 $FFFF91$FFFF90 $FF8F $FFFF8FInterrupt Sources and Priorities Table B-3. Interrupt SourcesTable B-3.Interrupt Sources VBA$6AVBA$6C VBA$6ENonmaskable Host Command Interrupt Table B-4.Interrupt Source Priorities Within an IPLESSI0 receive last slot interrupt Programming Sheets Figure B-1.Status Register SRExternal Bus Disable Stop DelayMemory Switch Mode Burst Mode EnableIrqd Mode Irqc ModeIrqb Mode Irqa ModeHost IPL Triple Timer IPLInterrupt Priority Register Iprp $FFFFFE Read/Write PLL Control Register Pctl $FFFFFD Read/Write Crystal Range Bit XtlrDefault Area Wait Control, Bits Bus Control Register BCR $FFFFFB Read/WriteBus Request Hold, Bit Bus Lock Hold, BitDram Control Register DCR $FFFFFA Read/Write Bus Packing Enable, Bit Bus Y Data Memory Enable, BitBus X Data Memory Enable, Bit Bus Program Memory Enable, BitReset = $000000 $FFFFE4, X$FFFFE8, X$FFFFEC Read/Write DMA Control Registers DCR5-DCR0DSP Control Register Dctr Read/Write Address X FFFFC5 Application= Enables master receive interrupts DSP PCI Control Register Dpcr Address XFFFFC6 Read/WriteFigure B-12.DSP PCI Master Control Register Dpmc PCI Bus Command, Bits Figure B-13.DSP PCI Address Register DparHI32 Control Register Hctr Read/Write HI32 Command Vector Register Hcvr Read/Write Host Non-Maskable Interrupt, BitDetected Parity Error, Bit Signaled System Error, BitSignalled Target Abort, Bit System Error Enable, BitLatency Timer High, Bits Read/WriteHeader Type, Bits Cache Line Size, BitsHI32 Memory Space Base Address Configuration Register Cbma Reset = $00000000PCI Mode Base Address High, Bits Pre-fetch, Bit Memory Space Indicator, BitSubsystem ID Register, Bits 31-16 Specifies the subsystem ID Essi Control Register a CRAx ESSI0-X$FFFFB5 Read/Write ESSI1-X$FFFFA5 Read/WriteESSI0-X$FFFFB6 Read/Write Essi Control Register B CRBxESSI1-X$FFFFA6 Read/Write Essi Transmit Slot Mask a TSMA0-1 ESSI0-X$FFFFB4 Read/Write ESSI1-X$FFFFA4 Read/WriteEssi Transmit Slot Mask B TSMB0-1 ESSI0-X$FFFFB3 Read/Write ESSI1-X$FFFFA3 Read/WriteSCI Control Register SCR $FFFF9C Read/Write Receiver Clock Mode/Source SCI Clock Control Register Sccr Address X$FFFF9B Read/WriteClock Out Divider Figure B-25.Timer Prescaler Load Register Tplr Timer Prescaler Load Register Tplr $FFFF83 Read/WriteTimer Control/Status Register TCSR0$FFFF8F Read/Write TCSR1$FFFF8B Read/Write TCSR2$FFFF87 Read/WriteTimer Load Register TLR0-2 TLR0-X$FFFF8E Write Only TLR1-X$FFFF8A Write Only TLR2-X$FFFF86 Write OnlyHost Data Direction Register Hddr X$FFFFC8 Write Port B HI08Host Data Register HDR $FFFFC9 Write Port C ESSI0 Port C Control Register Pcrc $FFFFBF Read/WritePort C Direction Register Prrc $FFFFBE Read/Write Port C Gpio Data Register Pdrc $FFFFBD Read/WritePort D ESSI1 Port D Control Register Pcrd $FFFFAF Read/WritePort D Direction Register Prrd $FFFFAE Read/Write Port D Gpio Data Register Pdrd $FFFFAD Read/WritePort E SCI Port E Control Register Pcre $FFFF9F Read/WritePort E Direction Register Prre $FFFF9E Read/Write Port E Gpio Data Register Pdre $FFFF9D Read/WriteProgramming Sheets DSP56301 User’s Manual Index Index-2 DSP56301 User’s Manual Index-3 Index-4 DSP56301 User’s Manual Index-5 Index-6 DSP56301 User’s Manual Index-7 Index-8 DSP56301 User’s Manual Index-9 Index-10 DSP56301 User’s Manual Index-11 Index-12 DSP56301 User’s Manual Index-13 Index-14 DSP56301 User’s Manual Index-15 Index-16 DSP56301 User’s Manual