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Motorola MCF5281, MCF5282 Interrupt Controller Theory of Operation, Interrupt Recognition

Models: MCF5282 MCF5281

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68K/ColdFire Interrupt Architecture Overview

10.1.1 Interrupt Controller Theory of Operation

To support the interrupt architecture of the 68K/ColdFire programming model, the combined 63 interrupt sources are organized as 7 levels, with each level supporting up to 9 prioritized requests. Consider the priority structure within a single interrupt level (from highest to lowest priority) as shown in Table 10-1.

Table 10-1. Interrupt Priority Within a Level

ICR[2:0]	Priority	Interrupt
ICR[2:0]	Priority	Sources
		Sources

111	7 (Highest)	8-63

110	6	8-63

101	5	8-63

100	4	8-63

—	Fixed Midpoint Priority	1-7

011	3	8-63

010	2	8-63

001	1	8-63

000	0 (Lowest)	8-63

The level and priority is fully programmable for all sources except interrupt sources 1–7. Interrupt source 1–7 (from the Edgeport module) are fixed at the corresponding level’s midpoint priority. Thus, a maximum of 8 fully-programmable interrupt sources are mapped into a single interrupt level. The “fixed” interrupt source is hardwired to the given level, and represents the mid-point of the priority within the level. For the fully-programmable interrupt sources, the 3-bit level and the 3-bit priority within the level are defined in the 8-bit interrupt control register (ICRnx).

The operation of the interrupt controller can be broadly partitioned into three activities:

•Recognition

•Prioritization

•Vector Determination during IACK

10.1.1.1 Interrupt Recognition

The interrupt controller continuously examines the request sources and the interrupt mask register to determine if there are active requests. This is the recognition phase.

10.1.1.2 Interrupt Prioritization

As an active request is detected, it is translated into the programmed interrupt level, and the resulting 7-bit decoded priority level (IRQ[7:1]) is driven out of the interrupt controller.

MOTOROLA

Chapter 10. Interrupt Controller Modules

10-3

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Motorola MCF5281, MCF5282 Interrupt Controller Theory of Operation, Interrupt Recognition, Interrupt Prioritization

Contents

MCF5282 ColdFire Microcontroller User’s Manual HOW to Reach US USA/EUROPE/LOCATIONS not Listed IND IND Contents Timing Assumptions Move Instruction Execution Times Chapter Enhanced Multiply-Accumulate Unit EmacChapter Cache Chapter Static RAM SramColdFire Flash Module CFM Chapter System Control Module SCM Chapter Power ManagementInterrupt Controller Modules Clock ModuleChapter External Interface Module EIM Signal DescriptionsChapter Edge Port Module Eport Chapter Chip Select ModuleChapter DMA Controller Module Chapter Synchronous Dram Controller ModuleChapter Fast Ethernet Controller FEC Chapter Watchdog Timer Module Chapter Programmable Interrupt Timer Modules PIT0-PIT3Chapter General Purpose Timer Modules Gpta and Gptb 20.3 Chapter Queued Serial Peripheral Interface Qspi Module Chapter DMA Timers DTIM0-DTIM3Chapter I2C Interface Chapter Uart ModulesChapter FlexCAN Chapter Queued Analog-to-Digital Converter Qadc Chapter General Purpose I/O Module27.4.7 Chapter Debug Support Reset Controller ModuleChapter Ieee 1149.1 Test Access Port Jtag Chapter Chip Configuration Module CCMParagraph Title Number 31.6.2 Nonscan Chain Operation 31-12 Electrical CharacteristicsChapter Mechanical Data Appendix a Register Memory MapTitle Number Illustrations10-7 13-4 17-13 20-20 23-10 25-31 Qadc Status Register 0 QASR0 27-22 27-12 27-53 29-39WDMREG BDM Command Format 29-36 29-40 Tables Charge Pump Current and MFD in Normal Mode Operation 10-13 15-18 17-30 20-23 25-21 27-13 29-43 33-21 Timer Module AC Timing Specifications 33-24 33-22 Organization AudienceOrganization Xlv Suggested Reading General InformationColdFire Documentation Conventions Acronyms and Abbreviations Table i. Acronyms and Abbreviated TermsMeaning Opcode Wildcard Terminology ConventionsTable ii. Notational Conventions Operand SyntaxPST ACCCCR Port NameMSW LSWSST Revision HistoryTable iii provides a revision history for this document Table iii. Revision HistoryRevision Date Substantive Changes Number ReleaseFrsr Liv RAMBAR.’ 10.3.6/10-11Substantive Changes Section/Page Revision NumberChapter Overview MCF5282 Key FeaturesMCF5282 Key Features MCF5282 Key Features MCF5282 Key Features MCF5282 Key Features MCF5282 Key Features MCF5282 Block Diagram Cache Cache ConfigurationConfiguration Tag Address Data Array Address Version 2 ColdFire CoreSram FlashDebug Module External Interface Module EIM System Control ModuleInterrupt Controllers INTC0/INTC1 Power ManagementChip Select General Input/Output PortsUart Modules Test Access PortDMA Timers DTIM0-DTIM3 General-Purpose Timers GPTA/GPTBPeriodic Interrupt Timers PIT0-PIT3 DMA Controller Software Watchdog TimerPhase Locked Loop PLL ResetMCF5282-Specific Features MCF5282-Specific Features Dsoc Processor PipelinesIAG FifoUser Programming Model Processor Register DescriptionProgram Counter PC Data Registers D0-D7Address Registers A0-A6 Stack Pointer A7Bits Name Description Condition Code Register CCRSupervisor Programming Model Emac Programming ModelStatus Register SR System Byte Condition Code Register CCRBits Supervisor/User Stack Pointers A7 and OTHERA7 Cache Control Register Cacr Access Control Registers ACR0, ACR1Programming Model Vector Base Register VBRAdditions to the Instruction Set Architecture Name CPU Space Rc Written with Register NameLocal Memory Registers Exception Processing Overview ISA Revision A+ New InstructionsInstruction Description Vector Stacked Program Assignment NumberS Offset Hex Counter Exception Vector AssignmentsException Stack Frame Definition Format Field Encodings0x100-0x3FC Next FS30 Definition Access Error ExceptionFault Status Encodings Processor ExceptionsPrivilege Violation Address Error ExceptionIllegal Instruction Exception Divide-By-ZeroUnimplemented Line-A Opcode Unimplemented Line-F OpcodeDebug Interrupt Trap Instruction Exception RTE and Format Error ExceptionFault-on-Fault Halt Reset ExceptionMAC DIV Emac FPU MMU ISA Debug VER REVD0 Hardware Configuration Info Field Description VERMAC ICA Icsiz RAM0SIZ ROM0SIZ Busw DCA Dcsiz RAM1SIZ ROM1SIZICA 32KB RAM 4KB RAM8KB RAM 16KB RAMTiming Assumptions Instruction Execution TimingMove Instruction Execution Times 10. Misaligned Operand ReferencesAddress10 Size Kbus Additional Operations CR/W 11. Move Byte and Word Execution Times 12. Move Long Execution TimesSource Destination Ax+ D16,Ax D8,Ax,Xi Xxx.wl 14. Two Operand Instruction Execution Times Standard One Operand Instruction Execution TimesStandard Two Operand Instruction Execution Times 13. One Operand Instruction Execution TimesStandard Two Operand Instruction Execution Times D16,PC D8,PC,Xn*SF Miscellaneous Instruction Execution Times15. Miscellaneous Instruction Execution Times Effective Address Opcode An+ D16,An D8,An,Xn*SF Xxx.wlEmac Instruction Execution Times 16. Emac Instruction Execution TimesEffective Address Opcode An+ D16,An D8,An,X Xxx.wl #xxx 18. BRA, Bcc Instruction Execution Times Branch Instruction Execution TimesColdFire Instruction Set Architecture Enhancements 17. General Branch Instruction Execution TimesInstruction Format OperationAssembler Syntax AttributesByte Reverse Register Byterev Assembler Syntax BYTEREV.L Dx AttributesCondition Codes Old Dx310 New Dx310 Find First One in RegisterStore/Load Status Register Strldsr Supported Starting with ISA A+Assembler SyntaxSTRLDSR #data Multiply-Accumulate Unit Chapter Enhanced Multiply-Accumulate Unit EmacIntroduction to the MAC Multiply-Accumulate Functionality DiagramInfinite Impulse Response IIR Filter General OperationFractional Alignment Motorola Memory Map/Register Set MAC Status Register Macsr1describes Macsr fields Macsr Field Descriptions Operational Modes Fractional Operation ModeRounding Summary of S/U, F/I, and R/T Control BitsSaving and Restoring the Emac Programming Model Following code performs the Emac state restore Mask Register MaskMULS/MULU MAC.sz Ry,RxSF,eay&,Rw 3summarizes Emac unit instructions Command Mnemonic DescriptionEmac Instruction Set Summary Emac Instruction Execution TimesData Representation Mac MovAccumulator Mac Old Mov New Two’s Complement, Signed Fractional Equation MAC OpcodesMACSR.V = Emac Instruction Set Summary MACSR.Z = Emac Instruction Set Summary Motorola Emac Instruction Set Summary MCF5282 User’s Manual Cache Features Cache Physical OrganizationThis chapter describes the MCF5282 cache operation Cache Physical Organization Interaction with Other Modules Cache OperationCache Coherency and Invalidation Memory Reference AttributesCache Miss Fetch Algorithm/Line Fills Initial Fetch Offset vs. Clnf BitsCLNF10 Longword Address Bits CACR31 CACR10 Type of Instruction Fetch Description Instruction Cache Operation as Defined by CACR31Cache Control Register Cacr Cache Programming ModelCache Registers Memory Map Cache RegistersCenb Cenb CPDCinv Didi Disd Invi Invd Ceib DCM Dbwe DWP Eusp ClnfCeib Cache Invalidate All as Defined by CACR23, 22, 21 Cache Configuration as Defined by CACR31, 23CACR31 CACR23 CACR22 Configuration Description CACR23 CACR22 CACR21 CACR20 Configuration OperationAccess Control Registers ACR0, ACR1 External Fetch Size Based on Miss Address and ClnfBufw Between the processors local bus and the external bus BWESram Features Sram OperationSram Programming Model PRI12 Upper Bank Lower Bank Priority Sram Base Address Register RambarPRI1 PRI2 SPV PRI1, PRI2Sram Base Address Register Sram InitializationFollowing loop initializes the entire Sram to zero Power ManagementTypical Rambar Setting Examples Sram Initialization CodeSram Programming Model Sram Programming Model MCF5282 User’s Manual Chapter ColdFire Flash Module CFM FeaturesBlock Diagram CFM Block Diagram CFM Array Memory Map Memory MapAddress Offset from array base Size Description CFM Configuration FieldCFM Configuration Field Flash Base Address Register FlashbarMemory Map BA30 BA29 Flash registers are described in this subsection CFM Configuration Register CfmcrCFM Registers Register DescriptionsDivld PRDIV8 CFM Clock Divider Register CfmclkdCfmcr Field Descriptions Bits Name DescriptionCfmclkd Field Descriptions CFM Security Register CfmsecSEC150 Description Cfmsec Field DescriptionsCFM Protection Register Cfmprot Cfmprot Field DescriptionsProt Sector CFM Supervisor Access Register CfmsaccPROTECT31 PROTECT2CFM Data Access Register Cfmdacc Cfmsacc Field DescriptionsData Cbeif Ccif Pviol Accerr Blank CFM User Status Register CfmustatOnly one Cfmustat bit should be cleared at a time 10. Cfmustat Field DescriptionsCFM Command Register Cfmcmd 12. Cfmcmd User Mode CommandsCommand Name Description Program and Erase Operations CFM OperationRead Operations Write OperationsSetting the Cfmclkd Register Thus the Flash state machine clock will beConsider the following example for fSYS = 66 MHz Program, Erase, and Verify Sequences Meaning Description Flash Valid Commands13summarizes the valid Flash user commands 13. Flash User Commands13. Example Program Algorithm Flash User Mode Illegal Operations Stop ModeFlash Security Operation Master ModeReset Back Door AccessErase Verify Check Cbeif Cbeie Interrupt Source Interrupt Flag Local EnableInterrupts 14. CFM Interrupt SourcesInterrupts MCF5282 User’s Manual Programming Model Memory Map and RegistersFollowing subsection describes the PMM registers Low-Power Interrupt Control Register LpicrChip Configuration Module Memory Map Memory MapEnbstop Lpicr Field DescriptionLpmd Stpmd Lvdse Low-Power Control Register LpcrXlpmipl Settings Xlpmipl Interrupts Level Needed to Exit Low-Power ModeFunctional Description Low-Power ModesLow-Power Modes PLL/CLKOUT Stop Mode OperationStop Mode Run ModeWait Mode Doze ModeColdFire Core Peripheral Behavior in Low-Power ModesStatic Random-Access Memory Sram Peripheral Shut DownUart Modules UART0, UART1, and UART2 Sdram Controller SdramcChip Select Module DMA Controller DMAC0-DMA3DMA Timers DMAT0-DMAT3 2.9 I2C ModuleQueued Serial Peripheral Interface Qspi 2.14 I/O Ports Reset ControllerInterrupt Controllers INTC0, INTC1 Fast Ethernet Controller FECClock Module Chip Configuration ModuleQueued Analog-to-Digital Converter Qadc Watchdog TimerProgrammable Interrupt Timers PIT0, PIT1, PIT2 and PIT3 Edge PortFlexCAN General Purpose Timers Gpta and GptbFunctional Description ColdFire Flash Module Jtag Summary of Peripheral State During Low-Power ModesCPU and Peripherals in Low-Power Modes 2.25 BDMQadc BDMJtag Functional Description MCF5282 User’s Manual Overview FeaturesMemory Map and Register Definition SCM Register Map3124 2316 158 Register Descriptions Internal Peripheral System Base Address Register IpsbarCache Ipsbar Field Description Memory Base Address Register RambarBDE Memory Base Address Register Rambar Rambar Field DescriptionCore Reset Status Register Crsr Core Watchdog Control Register CwcrCrsr Field Descriptions Register Descriptions CWT CWT Time-Out Period Core Watchdog Timer DelayInternal Bus Arbitration Core Watchdog Service Register CwsrSRAM1 Mpark Rambar CPU DMA EIM MarbFEC Sdramc Round-Robin Mode OverviewArbitration Algorithms M2PEN BCR24BIT M3PRTY M2PRTY M0PRTY M1PRTY Fixed ModeFixed Timeout Prklast Lckouttime Bus Master Park Register MparkMpark Field Description Features System Access Control Unit SacuPACR1 PACR2 PACR3 Memory Map/Register DefinitionSacu Register Memory Map 3128 2724 2320 1916 1512 118Peripheral Access Control Registers Pacr 0-PACR8 Master Privilege Register MPRPACR6 12. Peripheral Access Control Registers PACRs Bits Supervisor Mode User ModeIpsbar Offset Name Modules Controlled DTIM2 DTIM3 UART2Qspi DTIM0 DTIM113. Grouped PeripheralAccess Control Register 14. Gpacr Accessctrl Bit EncodingsGpacr Field Descriptions EPORT, WDOG, PIT0-PIT3, QADC, GPTA, Gptb 15. Gpacr Address SpaceRegister Space Protected Modules Protected Ipsbar Offset GPACR0Modes of Operation Normal PLL ModeClock Module Operation in Low-power Modes Low-power Mode Operation2 11 PLL Mode External Clock ModeClock Module Block Diagram Block DiagramName Function Signal DescriptionsSignal Properties ExtalMemory Map and Registers Locen Disclk Fwkup STPMD1 STPMD0 Register DescriptionsSynthesizer Control Register Syncr Lolre MFD2 MFD1 MFD0 LocreMFD MFD20RFD Pllmode Synthesizer Status Register SynsrStpmd OSCLocks Synsr Field DescriptionsSystem Clock Modes Clock ModeFunctional Description System Clock ModesClock Out and Clock In Relationships Clock Operation During ResetSystem Clock Mode PLL Options System Clock GenerationPLL Operation Phase and Frequency Detector PFDMultiplication Factor Divider MFD Charge Pump Current and MFD in Normal Mode OperationCharge Pump/Loop Filter Voltage Control Output VCOPLL Lock Detection PLL Loss of Lock Conditions PLL Loss of Lock ResetLoss of Clock Summary Loss of Clock ResetLoss of Clock Detection Alternate Clock Selection10. Stop Mode Operation Sheet 1 Loss of Clock in Stop Mode10. Stop Mode Operation Sheet 2 Expected PLL ActionStop 10. Stop Mode Operation Sheet 3 NRM ‘LC ‘LK‘LC NRM ‘LK PLL 10. Stop Mode Operation Sheet 4Modes 10. Stop Mode Operation Sheet 5Lose reference ClockFunctional Description MCF5282 User’s Manual 10.1 68K/ColdFire Interrupt Architecture Overview Chapter Interrupt Controller Modules68K/ColdFire Interrupt Architecture Overview Interrupt Priority Within a Level Interrupt Controller Theory of OperationInterrupt Recognition Interrupt PrioritizationInterrupt Vector Determination Interrupt Controller Number Base Address Memory MapInterrupt Controller Base Addresses Interrupt Controller Memory MapInterrupt Pending Registers IPRHn, IPRLn INT Interrupt Mask Register IMRHn, IMRLn IntmaskMaskall Interrupt Force Registers INTFRCHn, INTFRCLn IMRLn Field DescriptionsIntfrc IRQ Interrupt Request Level Register IRLRnLevel PRI Interrupt Acknowledge Level and Priority Register IACKLPRnInterrupt Control Register ICRnx, x = 1, 2 11. IACKLPRn Field DescriptionsInterrupt Sources 12. ICRnx Field Descriptions13. Interrupt Source Assignment for INTC0 DTIM2 CAP/REF IIFDTIM0 CAP/REF DTIM1 CAP/REFPIT2 PIF Gptb TOFPIT0 PIF PIT1 PIF14. Interrupt Source Assignment for INTC1 Software and Level n Iack Registers SWIACKR, L1IACK-L7IACKVector Prioritization Between Interrupt ControllersLow-Power Wakeup Operation 10-18 Low-Power Mode Operation IntroductionIpbus Edge Port Module Operation in Low-power Modes Low-power Mode Eport Operation Mode ExitInterrupt/General-Purpose I/O Pin Descriptions Bits Access RegistersEdge Port Module Memory Map EPPA5 EPPA4 EPPA3 EPPA2 EPPA1 Eport Pin Assignment Register EpparEport Data Direction Register Epddr EPPA7Edge Port Interrupt Enable Register Epier Edge Port Data Register EpdrEpdd Field Descriptions Edge Port Pin Data Register Eppdr Edge Port Flag Register EpfrEpdr Field Descriptions EPF7-EPF1 Epfr Field Descriptions11-8 Signal Description Chip Select Module Signals1lists signals used by the chip select module Chip Select Module SignalsByte Enables/Byte Write Enable Signal Settings Transfer Size Port SizeD3124 D2316 D158 D70 General Chip Select Operation Chip Select OperationBS2 BS1 BS0 External Boot Chip Select OperationAccesses by Matches in CSARs and DACRs 12.3.1.1 8-, 16-, and 32-Bit Port SizingChip Select Registers D1918 External Boot Chip Select ConfigurationD1918 Boot Device/Data Port Size Chip Select Registers6describes Csarba Chip Select Module RegistersChip Select Address Registers CSAR0-CSAR6 CSARs, -2,specify the chip select base addressesCsmr n Field Descriptions Chip Select Mask Registers CSMR0-CSMR67describes Csmr fields CSARn Field DescriptionPS1 PS0 BEM Bstr Bstw Chip Select Control Registers CSCR0-CSCR68describes CSCRn fields SD,UCNo internal TA is asserted. Cycle is terminated externally CSCRn Field Descriptions12-10 Bus and Control Signals ColdFire Bus Signal SummarySignal Name Description Clkout Edge Bus Characteristics Data Transfer OperationTIP Bus Cycle Execution Chip-Select Module Output Timing DiagramAccesses by Matches in CSCRs and DACRs Data Transfer Cycle States Bus Cycle StatesState Cycle Read Cycle System MCF5282Write cycle timing diagram is shown in Figure Write Cycle3describes the six states of a basic write cycle Read Cycle with Fast Termination Fast Termination CyclesBurst Cycles Back-to-Back Bus CyclesLine Read Bus Cycles Allowable Line Access PatternsA32 Longword Accesses Line Transfers13shows timing when internal termination is used 16. Line Write Burst 2-1-1-1, Internal/External Termination Line Write Bus Cycles17shows a line burst write with one wait-state insertion Misaligned Operands19. Example of a Misaligned Longword Transfer 32-Bit Port 13-16 Chapter Signal Descriptions MCF5282 Block Diagram with Signal Interfaces MCF5282 Signal Description Signal Name Abbreviation Function External Memory InterfaceSdram Controller Signals External Interrupt Signals Signal Name Abbreviation FunctionClock and Reset Signals Chip Configuration ModuleUart Signals Queued Serial Peripheral Interface Qspi SignalsFlexCAN Signals 2C SignalsDebug Support Signals General Purpose Timer SignalsDMA Timer Signals Analog-to-Digital Converter Qadc Signals2lists signals in alphabetical order by abbreviated name Test SignalsPower and Reference Signals Abbreviation Function MCF5282 Alphabetical Signal IndexVddpll TCK External Memory Interface and Ports MCF5282 Signals and Pin Numbers Sorted by FunctionChip Configuration/Mode Selection SecondaryEthernet Chip SelectsSdram Controller External Interrupts PortFlexCAN UARTs General Purpose TimersDMA Timers Queued Analog-to-Digital Converter QadcDebug and Jtag Test Port Control Single-Chip Mode Power SuppliesTest Signal Reset Clock and Reset Signals External Boot ModeListing of signals that do not default to a Gpio function Pin Reset States at Reset Single-Chip ModeData Bus D310 14.2 MCF5282 External SignalsExternal Interface Module EIM Signals Address Bus A230Read/Write R/W Output Enable OETransfer Error Acknowledge TEA Transfer Acknowledge TATransfer Size Encoding Transfer Start TSTransfer In Progress TIP Chip Selects CS60Sdram Controller Signals Chip Configuration Signals Clock and Reset SignalsEthernet Module Signals External Interrupt SignalsReceive Data Valid Erxdv Transmit Error EtxerCollision Ecol Receive Clock ErxclkQueued Serial Peripheral Interface Qspi Signals FlexCAN Signals 14.2.9 I2C SignalsUart Module Signals General Purpose Timer Signals DMA Timer Signals Analog-to-Digital Converter Signals Debug Support Signals Test Clock Tclk Breakpoint/Test Mode Select BKPT/TMSDevelopment Serial Input/Test Data DSI/TDI Development Serial Output/Test Data DSO/TDOTest Test Test SignalsDebug Data DDATA30 Processor Status Outputs PST30Power and Reference Signals 14-34 Definitions OverviewScas Sras Scke SDRAMCS10 Dramw Block Diagram and Major ComponentsDACR0 DACR1Sdram Commands Command DefinitionSdram Controller Operation Dram controller registers memory map is shown in Table Dram Controller Signals2describes the behavior of Dram signals in synchronous mode Memory Map for Sdramc RegistersDCR Field Descriptions Dram Control Register DCRDCR, shown in -2,controls refresh logic 4describes DCR fieldsBit Dram Address and Control Registers DACR0/DACR15describes DACRn fields DACRn Field Descriptions15-7 DMRn Field Descriptions Bit Associated Access Type Access DefinitionDram Controller Mask Registers DMR0/DMR1 6describes DMRn fieldsAddress Pin Row Address Column Address General Synchronous Operation GuidelinesAddress Multiplexing Generic Address Multiplexing SchemePins Row Column PinsMCF5282 Row Column 15-12 Interfacing Example Burst Page ModePins MCF5282 Sdram Byte Strobe ConnectionsBurst Read Sdram Access Auto-Refresh Operation Burst Write Sdram AccessAuto-Refresh Operation Self-Refresh OperationSelf-Refresh Operation Initialization SequenceMode Register Settings Clkout 25. Sdram Example SpecificationsParameter Specification Sdram Example26. Sdram Hardware Connections Sdram Interface ConfigurationDCR Initialization Dacr InitializationCasl CBM Imrs Bits Name Setting DescriptionDACRs should be programmed as shown in Figure 28. Dacr Initialization Values29. DMR0 Initialization Values DMR InitializationMCF5282 Pins Sdram Pins Mode Register Initialization Mode Register Initialization30. Mode Register Initialization 31. Mode Register Mapping to MCF5282 A310Refresh Sequence Mode Register Initialization SequenceInitialization Code Precharge Sequence15-25 15-26 Chapter DMA Controller Module Channel 0 Channel 1 Channel 2 Channel DMA Module FeaturesDMA Request Control Dmareqc DMA DMA Transfer OverviewMemory Map for DMA Controller Module Registers DMA Controller Module Programming ModelDAR Source Address Registers SAR0-SAR3Destination Address Registers DAR0-DAR3 SARBCR Byte Count Registers BCR0-BCR3BWC Sinc Ssize Dinc Dsize Start DMA Control Registers DCR0-DCR33describes DCRn fields DCRn Field DescriptionsEncoding BCR24BIT = BWCDMA Status Registers DSR0-DSR3 4describes DSRn fieldsDSR n Field Descriptions Done DMA Controller Module Functional DescriptionTransfer Requests Cycle-Steal and Continuous Modes BSYDual-Address Transfers Data Transfer ModesChannel Initialization and Startup Channel PrioritizationProgramming the DMA Controller Module Auto-Alignment Data TransferBandwidth Control Termination16-16 Chapter Fast Ethernet Controller FEC Primary operational modes are described in this section Full and Half Duplex OperationInterface Options 17.2.2.1 10 Mbps and 100 Mbps MII Interface17.2.2.2 10 Mpbs 7-Wire Interface Operation Address Recognition OptionsInternal Loopback PAD FEC Top-Level Functional Diagram17-5 Ecretheren De-Assertion Effect on FEC Initialization SequenceUser Initialization Prior to Asserting Ecretheren Hardware Controlled InitializationMicrocontroller Initialization Microcontroller InitializationUser Initialization After Asserting Ecretheren FEC User Initialization Before EcretherenNetwork Interface Options MII ModeWire Mode Configuration Signal Description Emac pinFEC Frame Transmission FEC Frame Reception Ethernet Address Recognition Ethernet Address Recognition-Receive Block Decisions Ethernet Address Recognitionq-Microcode Decisions Hash AlgorithmBit DA Bit Hash Hash Decimal Hex Value Destination Address to 6-Bit Hash17-15 Full Duplex Flow Control Pause Frame Field SpecificationInter-Packet Gap IPG Time Collision HandlingInternal and External Loopback Transmission Errors Ethernet Error-Handling ProcedureHeartbeat Reception Errors10. FEC Register Memory Map Top Level Module Memory MapDetailed Memory Map Control/Status Registers Module Memory MapMIB Block Counters Memory Map Mnemonic Description Offset 11. MIB Counters Memory MapRegisters Ethernet Interrupt Event Register EIRFollowing sections describe each register in detail Babr Babt GRA TXF TXB RXF RXB MII Eberr Hberr Ieeetsqe17-25 Interrupt Mask Register Eimr Receive Descriptor Active Register RdarBabr Babt GRA TXF TXB RXF RXB MII Rdesactive Transmit Descriptor Active Register TdarEtheren Reset Ethernet Control Register ECRXdesactive MII Management Frame Register Mmfr 16. ECR Field DescriptionsData Bit Name Description 17. Mmfr Field DescriptionsMII Speed Control Register Mscr Dispreamble MiispeedDispreamble 19. Programming Examples for Mscr Mibdisable MibidleMibdisable MIB Control Register MibcFCE Receive Control Register RCRMaxfl FCE Bcrej Prom Miimode DRT LoopTransmit Control Register TCR Tfcpause FdenGTS Physical Address Low Register Palr 22. TCR Field DescriptionsTfcpause Type Physical Address High Register PaurPADDR1 PADDR2Opcode Opcode/Pause Duration Register OPDDescriptor Individual Upper Address Register Iaur 24. Paur Field DescriptionsIADDR2 Descriptor Individual Lower Address IalrIADDR1 Bits Name DescriptionsGADDR1 Descriptor Group Upper Address GaurDescriptor Group Lower Address Galr 27. Ialr Field DescriptionsFifo Transmit Fifo Watermark Register Tfwr GADDR2Xwmrk Fifo Receive Bound Register Frbr 30. Tfwr Field DescriptionsRbound Fifo Receive Start Register Frsr Receive Descriptor Ring Start ErdsrRfstart Transmit Buffer Descriptor Ring Start Etsdr RdesstartXdesstart Receive Buffer Size Register Emrbr 34. Etdsr Field DescriptionsRbufsize Buffer Descriptors Driver/DMA Operation with Buffer DescriptorsDriver/DMA Operation with Transmit BDs Driver/DMA Operation with Receive BDs RO1 RO2 Ethernet Receive Buffer Descriptor RxBDErdsr 36. Receive Buffer Descriptor Field DefinitionsWord Location Field Name Description RO1Ethernet Transmit Buffer Descriptor TxBD TO1 TO1 TO2 ABC17-51 17-52 Low-power Mode Watchdog Operation Mode Exit Watchdog Module Operation in Low-power ModesSignals Watchdog timer module has no off-chip signalsRefer to -2for an overview of the watchdog memory map 16-bit WCR configures watchdog timer operation Watchdog Timer Module Memory MapWatchdog Control Register WCR WCR Field Descriptions Watchdog Modulus Register WMRWC9 WC8 Watchdog Service Register WSRWatchdog Count Register Wcntr WMR Field DescriptionsWS7 WS6 WS5 WS4 WS3 WS2 WS1 WS0 WS9 WS8Chapter Programmable Interrupt Timer Modules PIT0-PIT3 PIT module has no off-chip signals PIT Module Operation in Low-power ModesLow-power Mode PIT Operation Mode Exit Ipsbar Offset Access For PITx Bits Address Programmable Interrupt Timer Modules Memory MapPRE PIT Control and Status Register PcsrPRE3 PRE2 PRE1 PRE0 Doze Halted OVW PIE PIF RLDPIF PIT Modulus Register PMRSet-and-Forget Timer Operation PIT Count Register PcntrThis subsection describes the PIT functional operation PIT Clock Counter Free-Running Timer OperationTimeout Specifications System clockPIT Interrupt Requests Interrupt Request Flag Enable Bit TimeoutInterrupt Operation 4shows the interrupt request generated by the PITChapter General Purpose Timer Modules Gpta and Gptb GPT Block Diagram Pin Signal DescriptionFunction Reset State Pull-up Name Register Bit GPTn20GPT Modules Memory Map Ipsbar Offset Bits AccessGPTn3 SYNCnIOS GPT Input Capture/Output Compare Select Register GptiosFOC GPT Compare Force Register GpcforcGPT Output Compare 3 Mask Register GPTOC3M Gptios Field DescriptionsOC3D GPT Output Compare 3 Data Register GPTOC3DGPT Counter Register Gptcnt GPTOC3M Field DescriptionsGpten GPT System Control Register 1 GPTSCR1Gptcnt Field Descriptions Gpten TffcaOM3 OL3 OM2 GPT Toggle-On-Overflow Register GpttovGPT Control Register 1 GPTCTL1 TOVEDG3B EDG3A EDG2B EDG2A GPT Interrupt Enable Register GptieGPT Control Register 2 GPTCTL2 11. GPTCL1 Field Descriptions13. Gptie Field Descriptions GPT System Control Register 2 GPTSCR2GPT Flag Register 2 GPTFLG2 GPT Flag Register 1 GPTFLG1PAE Pamod Pedge CLK Paovi PAI GPT Channel Registers GPTCnPulse Accumulator Control Register Gptpactl CcntPulse Accumulator Flag Register Gptpaflg PaclkPaovf Paif Pulse Accumulator Counter Register Gptpacnt 19. Gptpaflg Field DescriptionsPacnt Portt GPT Port Data Register GptportGPT Port Data Direction Register Gptddr 22. Gptddr Field DescriptionsPrescaler Input CaptureOutput Compare Pulse Accumulator Event Counter ModeOM3 OL3 Gated Time Accumulation ModeGeneral-Purpose I/O Ports Pulse Accumulator23. GPT Settings and Pin Functions EDGx OMx OC3Mx Pin Data Driven CommentsDir Function Interrupts Reset24lists the interrupt requests generated by the timer Interrupt Request Flag Enable BitPulse Accumulator Input Paif Timer Overflow TOFGPT Channel Interrupts CnF Pulse Accumulator Overflow Paovf20-23 20-24 Chapter DMA Timers DTIM0-DTIM3 DMA Timer Programming Model Key FeaturesPrescaler Reference Compare Capture ModeOutput Mode DMA Timer Module Memory MapOrri FRR CLK RST DMA Timer Mode Registers DTMRnDTXMR3 DMA Timer Extended Mode Registers DTXMRn2describes the DTMRn fields DTMRn Field DescriptionsDMA Timer Event Registers DTERn 3describes the DTXMRn fieldsDTXMRn Field Descriptions DTERn Field Descriptions DMA Timer Reference Registers DTRRnDMA Timer Capture Registers DTCRn 4describes the DTERn fieldsDMA Timer Counters DTCNn Using the DMA Timer ModulesCode Example T0LOOP Calculating Time-Out ValuesModule Description Chapter Queued Serial Peripheral Interface Qspi ModuleInterface and Signals Qspi RAMQspiclk Internal Bus Interface Qspi Input and Output Signals and FunctionsSignal Name Hi-Z or Actively Driven Function OperationQspi RAM 0x0F Receive RAMRelative Address Register 0x00 0x01Command RAM Baud Rate SelectionTransmit RAM 66.67 MHz Transfer DelaysQspiclk Frequency as Function of System Clock and Baud Rate System ClockTransfer Length Qspi Registers Programming ModelValue Bits per transfer Qspi Mode Register QMR4gives QMR field descriptions QMR Field DescriptionsQCD Qspi Delay Register QdlyrQspics Qmrcpol = Qmrcpha = = Qdlyrqcd Qcrcont = = QdlyrdtlQdlyr Field Descriptions Qspi Wrap Register QWR5gives Qdlyr field descriptions 6gives QWR field descriptionsQspi Interrupt Register QIR 7describes QIR fieldsQIR Field Descriptions Qspi Address Register QAR Qspi Data Register QDRAddr Command RAM Registers QCR0-QCR15 8gives QCR field descriptionsQCR0-QCR15 Field Descriptions QS4 QS5 Programming ExampleQSPICS30 Qspiclk QS2 Qspidout QS3 Qspidin22-17 22-18 Ucts Urts Urxd Utxd UartSerial Module Overview Register Descriptions Uart Module Memory MapIpsbar Offset 3124 2316 158 ERR Uart Mode Registers 1 UMR1nCTS Parity Mode Parity Type PT=2describes UMR1n fields UMR1n Field DescriptionsUart Mode Register 2 UMR2n 3describes UMR2n fieldsUMR2 n Field Descriptions USRn Field Descriptions Uart Status Registers USRn4describes USRn fields UMR2n Field DescriptionsUart Clock Select Registers UCSRn 5describes UCSRn fieldsRCS TCS Dtin Uart Command Registers UCRnUCSRn Field Descriptions RCSUCR n Field Descriptions Bits Value Command DescriptionUart Receive Buffers URBn Uart Transmit Buffers UTBnUCRn Field Descriptions COS CTS Uart Input Port Change Registers UIPCRn7describes UIPCRn fields Uipcr n Field Descriptions8describes UACRn fields UACRs, shown in -7,control the input enableUart Auxiliary Control Register UACRn Uart Interrupt Status/Mask Registers UISRn/UIMRnUart Baud Rate Generator Registers UBG1n/UBG2n 9describes UISRn and UIMRn fieldsUisr n/UIMR n Field Descriptions 11describes UOP1 and UOP0 fields Uart Output Port Command Registers UOP1n/UOP0nUart Input Port Register UIPn 10describes UIPn fields11. UOP1/UOP0 Field Descriptions Uart Module Signal Definitions IRQUcts 12. Uart Module Signals Transmitter/Receiver Clock SourceProgrammable Divider Sysclk Following sections describe how to calculate baud ratesCalculating Baud Rates System Clock Baud RatesExternal Clock Transmitter and Receiver Operating ModesTransmitter Therefore UBG1n = 0x00 and UBG2n = 0xD623-21 Receiver 20. Transmitter Timing Diagram21shows receiver functional timing Fifo Stack23-24 Automatic Echo Mode Local Loop-Back ModeLooping Modes Remote Loop-Back Mode Multidrop Mode25. Multidrop Mode Timing Diagram Write Cycles Bus OperationProgramming Read Cycles13. Uart Interrupts Setting up the Uart to Generate Core InterruptsSetting up the Uart to Request DMA Service Interrupt and DMA Request Initialization14. Uart DMA Requests Register SettingUart Module Initialization Sequence 15shows the Uart module initialization sequence26. Uart Mode Programming Flowchart Sheet 1 26. Uart Mode Programming Flowchart Sheet 2 26. Uart Mode Programming Flowchart Sheet 3 26. Uart Mode Programming Flowchart Sheet 4 26. Uart Mode Programming Flowchart Sheet 5 23-36 Chapter I2C Interface Interface FeaturesSCL SDA Acknowledge bit generation/detection Bus-busy detectionIfdr Iadr24.4 I2C Protocol 24.3 I2C System ConfigurationRepeated Start Arbitration ProcedureSCL1 SCL2 Clock SynchronizationHandshaking Clock StretchingI2ADR Field Descriptions 24.5.1 I2C Address Register I2ADR2describes I2ADR fields I2C Interface Memory MapDivider 24.5.2 I2C Frequency Divider Register I2FDR3describes I2FDRIC I2FDR Field DescriptionsIEN Iien 24.5.3 I2C Control Register I2CR4describes I2CR fields I2CR Field DescriptionsICF Iaas IBB IAL SRW IIF 24.5.4 I2C Status Register I2SR5describes I2SR fields I2SR Field Descriptions24.5.5 I2C Data I/O Register I2DR 24.6 I2C Programming ExamplesPost-Transfer Software Response Generation of StartI2SR 24.6.4 Generation of StopGeneration of Repeated Start Slave ModeArbitration Lost Write RXAK=IAAS=1 SRW=124-16 Chapter FlexCAN Cantx Canrx RAM MB3 MB2 MB1 MB025.1.2 External Signals FlexCAN Memory MapFlexCAN Memory Map Typical can system is shown below in Figure Can SystemMessage Buffers Message Buffer StructureCommon Fields for Extended and Standard Format Frames Common Extended/Standard Format Frames Message Buffer Codes for Receive BuffersMessage Buffer Codes for Transmit Buffers Extended Format Frames Message Buffer Memory MapFields for Extended Format Frames Fields for Standard Format FramesFunctional Overview Message BuffersIdhigh Idlow Receive Process Transmit ProcessSelf-Received Frames Message Buffer HandlingSerial Message Buffers SMBs Transmit Message Buffer DeactivationReceive Message Buffer Deactivation Locking and Releasing Message Buffers Remote FramesListen-Only Mode Overload FramesTime Stamp Freq Mhz Time-quanta/bit Value + Configuring the FlexCAN Bit TimingBit Timing Examples of System Clock/CAN Bit-Rate/S-ClockFlexCAN Error Counters FlexCAN Initialization Sequence Debug Mode Low-Power Stop Mode for Power SavingSpecial Operating Modes Canmcr Interrupts Auto-Power Save ModeStop FRZ Halt Notrdy Wakemsk Softrst Frzack Can Module Configuration Register CanmcrProgrammer’s Model 8describes the Canmcr fieldsStop Canmcr Field Descriptions9describes the CANCTRL0 fields FlexCAN Control Register 0 CANCTRL011describes the CANCTRL1 fields 10. Transmit Pin ConfigurationTransmit Pin Configuration FlexCAN Control Register 1 CANCTRL1Samp Prescaler Divide Register Presdiv12describes the Presdiv fields 11. CANCTRL1 Field Descriptions13. CANCTRL2 Field Descriptions FlexCAN Control Register 2 CANCTRL213describes the CANCTRL2 fields 12. Presdiv Field DescriptionsRx Mask Registers Free Running Timer Timer14describes the Timer fields 14. Timer Field Descriptions12. Rx Mask Registers RXGMASK, RX14MASK, and RX15MASK Receive Mask Registers RXGMASK, RX14MASK, RX15MASKFlexCAN Error and Status Register Estat 17describes the Estat fields16. RXGMASK, RX14MASK, and RX15MASK Field Descriptions Biterr 17. Estat Field DescriptionsBUF10M BUF9M BUF8M Interrupt Mask Register Imask18describes the Imask fields BUF15M BUF14M BUF13M19. Iflag Field Descriptions Interrupt Flag Register Iflag19describes the Iflag fields 18. Imask Field Descriptions21describes the Txectr fields FlexCAN Receive Error Counter RxectrFlexCAN Transmit Error Counter Txectr 20describes the Rxectr fieldsChapter General Purpose I/O Module MCF5282 Ports Module Block Diagram Modes of Operation FeaturesSdram control Bit DMA timers Uart transmit/receive OverviewMCF5282 Ports External Signals External Signal DescriptionUCTS0 ErxerSDA SCLMCF5282 Ports Module Memory Map 31-24 23-16 15-8 AccessMemory Map/Register Definition Register OverviewClre Clrf Clrg Clrh Ddrb DdrcDdreh Ddrel Clra Clrb Clrc ClrdPort Output Data Registers 8-bit Port Output Data Registers PORTnRegister Bits Name Description Port Data Direction Registers DDRnPORTn bits are described in Table PORTn 8-bit, 7-bit, 6-bit, and 4-bit Field DescriptionsPort Data Direction Register 7-bit 10. Port Pin Data/Set Data Registers 8-bit Port Pin Data/Set Data Registers PORTnP/SETnPORTUAP/SETUA Port Clear Output Data Registers CLRnPORTnP/SETn bits are described in Table PORTnP/SETn 8-bit, 6-bit, and 4-bit Field DescriptionsCLRn 8-bit,7-bit, 6-bit, and 4-bit Field Descriptions CLRn register bits are described in TablePort B/C/D Pin Assignment Register Pbcdpar Reset Values for Pbcdpar BitsPort Size Pbpa Reset Pcdpa Reset External BootPort E Pin Assignment Register Pepar Pepar Field DescriptionsPEPA3 Single chip mode 10. Reset Values for Pepar Bits and FieldsPort F Pin Assignment Register Pfpar Pfpar controls the pin function of port F7511. Pfpar Field Descriptions Port J Pin Assignment Register Pjpar Pjpar controls the pin function of port J12. Pjpar Field Descriptions Paspar controls the pin function of port AS Port SD Pin Assignment Register PsdparPort AS Pin Assignment Register Paspar Psdpar controls the pin function of port SD14. Paspar Field Descriptions Port EH/EL Pin Assignment Register PehlparECOL, ERXCLK, ERXDV, ERXD0, Ecrs Port QS Pin Assignment Register PqsparPqspar controls the pin function of port QS 15. Pehlpar Field DescriptionsPort TC Pin Assignment Register Ptcpar Ptcpar controls the pin function of port TCPTCPA3 PTCPA2 PTCPA1 PTCPA0 Port TD Pin Assignment Register Ptdpar Ptdpar controls the pin function of port TDPTDPA3 PTDPA2 PTDPA1 PTDPA0 Puapar controls the pin function of port UA Port UA Pin Assignment Register PuaparClkout Input PIN Register PIN Data Port Digital I/O TimingClkout Output Data Register Output PIN Initialization/Application InformationChapter Queued Analog-to-Digital Converter Qadc Qadc Block Diagram Modes of Operation Debug ModePort QA Analog Input Signals Port QA Signal FunctionsPort QB Signal Functions Port QA Digital Input/Output SignalsPort QB Analog Input Signals Port QB Digital I/O Signals External Trigger Input SignalsMultiplexed Address Output Signals Multiplexed Analog Input SignalsMultiplexed Analog Input Channels Voltage Reference SignalsDedicated Analog Supply Signals Dedicated Digital I/O Port Supply SignalQadc Module Configuration Register Qadcmcr This subsection describes the Qadc registersQadc Memory Map Port Data Registers Portqa and Portqb Qadc Test Register QadctestANZ ANY ANX ANW Port QA and QB Data Direction Register Ddrqa and DdrqbControl Registers Qadc Control Register 0 QACR0This subsection describes the Qadc control registers QPR6 Qadc Control Register 0 QACR0 QACR0 Field DescriptionsPrescaler fSYS Divide-by Values QPR60Divisor Qadc Control Register 1 QACR1 CIE1 PIE1 SSE1CIE1 Queue 1 Operating Modes Operating ModeQadc Control Register 2 QACR2 Resume CIE2 PIE2 SSE2BQ2 QACR2 Field DescriptionsQueue 2 Operating Modes CIE2MQ2128 Operating Modes Status RegistersQadc Status Register 0 QASR0 This subsection describes the Qadc status registers27-20 Queued Analog-to-Digital Converter Qadc 27-21 CF1 PF1 CF2 QS9 QS8QS7 QS6 CWP5 CWP4 CWP3 CWP2 CWP1 CWP0 CWP Scan Mode Queue Operation PF Asserts?10. QASR0 Field Descriptions 11. CCW Pause Bit ResponseQueue 1/Queue 2 States 12. Queue Status12. Queue Status Transition Qadc Status Register 1 QASR1 Conversion Command Word Table CCWIST1 IST0 BYPIST10 Input Sample Times Non-Multiplexed Input Signals Channel NumberPort Signal Name 15. Input Sample TimesRight-Justified Unsigned Result Register Rjurr 17. Multiplexed Channel Assignments and Signal DesignationsMultiplexed Input Signals Channel Number Result RegistersResult Left-Justified Signed Result Register LjsrrLeft-Justified Unsigned Result Register Ljurr 18. Rjurr Field Descriptions27.7 Functional Description Result CoherencyExternal Multiplexing External Multiplexing Operation 18. External Multiplexing Configuration 21. Analog Input Channels Analog SubsystemModule Version Options Analog-to-Digital Converter OperationConversion Cycle Times 19. Qadc Analog Subsystem Block DiagramSample Buffer Channel Decode and MultiplexerSuccessive Approximation Register SAR Digital Control SubsystemComparator BiasQueue Priority Queue Priority Timing Examples22. Qadc Queue Operation with Pause Events Queue Priority Schemes22. Trigger Events 23. Status Bits23. CCW Priority Situation 24. CCW Priority Situation 26. CCW Priority Situation 28. CCW Priority Situation 30. CCW Priority Situation 32. CCW Priority Situation 34. CCW Freeze Situation 38. CCW Freeze Situation Boundary Conditions Single-Scan Modes Disabled ModeReserved Mode Scan ModesSoftware-Initiated Single-Scan Mode Externally Gated Single-Scan Mode Externally Triggered Single-Scan ModeInterval Timer Single-Scan Mode Continuous-Scan Modes Software-Initiated Continuous-Scan Mode Externally Gated Continuous-Scan Mode Externally Triggered Continuous-Scan ModeQadc Clock Qclk Generation Periodic Timer Continuous-Scan Mode42. Qadc Clock Subsystem Functions Periodic/Interval Timer43illustrates the operation of the queue structure Conversion Command Word Table43. Qadc Conversion Queue Operation Queued Analog-to-Digital Converter Qadc 27-61 Result Word Table Signal Connection ConsiderationsAnalog Power Signals Analog Reference SignalsConversion Timing Schemes 45. Errors Resulting from Clipping46. External Positive Edge Trigger Mode Timing with Pause 47. Gated Mode, Single Scan Timing 48. Gated Mode, Continuous Scan Timing Analog Supply Filtering and Grounding49. Star-Ground at the Point of Power Supply Origin Accommodating Positive/Negative Stress Conditions 50. Input Signal Subjected to Negative StressIinjp IinjnAnalog Input Considerations 52. External Multiplexing of Analog Signal Sources 53. Electrical Model of an A/D Input Signal Analog Input PinsSettling Time for the External Circuit 24. External Circuit Settling Time to 1/2 LSBSource Resistance RF + Rsrc 100 Ω 10 kΩ 100 kΩ Error Resulting from Leakage 25. Error Resulting from Input Leakage IOffInterrupt Operation PF1 PIE1 Interrupt Sources26. Qadc Status Flags and Interrupt Sources Queue Queue Activity Status Interrupt FlagChapter Reset Controller Module Name Direction Input Reset Controller Signal PropertiesRsti RstoReset Controller Memory Map Reset Control Register RCRSoft WDR POR Reset Status Register RSRLvdf LvdieWDR RSR Field DescriptionsSource Type Reset SourcesPower-On Reset Reset Source SummaryLoss-of-Lock Reset External ResetWatchdog Timer Reset Loss-of-Clock ResetReset Control Flow Reset Control Flow Power-On Reset/Low-Voltage Detect Reset Concurrent ResetsSynchronous Reset Requests Internal Reset RequestReset Status Flags 28-12 Processor/Debug Module Interface Debug module is shown in FigureDebug Module Signals Signal DescriptionReal-Time Trace Support Processor Status EncodingPST30 Definition Hex PST30 Definition Hex Binary Begin Execution of Taken Branch PST =Ddata Clkout PSTCSR AatrAblr AbhrDRc4-0 Register Name Abbreviation Initial State Revision a Shared Debug ResourcesBDM/Breakpoint Registers Rev. a Shared BDM/Breakpoint HardwareTMM Address Attribute Trigger Register Aatr5describes Aatr fields Aatr Field DescriptionsAddress Breakpoint Registers ABLR, Abhr Address Breakpoint Registers ABLR, AbhrAblr Field Description Configuration/Status Register CSR6describes Ablr fields 7describes Abhr fieldsCSR Field Descriptions 8describes CSR fieldsIPI Data Breakpoint/Mask Registers DBR, DbmrProgram Counter Breakpoint/Mask Registers PBR, Pbmr 9describes DBR fields10describes Dbmr fields 12. PBR Field Descriptions Trigger Definition Register TDR12describes PBR fields 13describes Pbmr fields14. TDR Field Descriptions 14describes TDR fieldsEduu Background Debug Mode BDMCPU Halt Edum29-17 BDM Serial Interface Clkout Dsclk DSIDSO 16describes transmit BDM packet fields Receive Packet FormatTransmit Packet Format 15describes receive BDM packet fieldsBDM Command Set 17. BDM Command SummarySection Command 18. BDM Field Descriptions ColdFire BDM Command Format18describes BDM fields Extension Words as Required16. Command Sequence Diagram Command Sequence DiagramsCommand Set Descriptions Command SequenceRead A/D Register RAREG/RDREG Read Memory Location Read Write A/D Register WAREG/WDREG22. Read Command Sequence 21. Read Command/Result FormatsWrite Memory Location Write 23. Write Command FormatSet is returned if a bus error occurs Operands are sent as 16 and 32 bits, respectivelyDump Memory Block Dump 25. Dump Command/Result Formats Fill Memory Block Fill 26. Dump Command Sequence28. Fill Command Sequence 27. Fill Command FormatNo Operation NOP Resume Execution GORead Control Register Rcreg Rc encoding19. Control Register Map BDM Accesses of the Emac Registers BDM Accesses of the Stack Pointer Registers A7 SSP, USPWrite Control Register Wcreg 35. Wcreg Command/Result Formats20shows the definition of DRc encoding Read Debug Module Register RdmregWrite Debug Module Register Wdmreg 20. Definition of DRc Encoding-ReadDRc40 Debug Register Definition Mnemonic Initial State Breakpoint Status Real-Time Debug SupportTheory of Operation 21. DDATA30/CSRBSTAT Breakpoint ResponseEmulator Mode Concurrent BDM and Processor Operation Instruction Operand Syntax 22. PST/DDATA Specification for User-Mode InstructionsProcessor Status, Ddata Definition User Instruction Set29-41 29-42 23. PST/DDATA Specification for MAC Instructions Supervisor Instruction Set 24. PST/DDATA Specification for Supervisor-Mode InstructionsGND PST3 PST2 PST1 PST0 DDATA3 DDATA2 DDATA1 DDATA0 Reset DSIMotorola-Recommended BDM Pinout GND Dsclk29-46 Chapter Chip Configuration Module CCM Chip Configuration Module Block Diagram Single-Chip ModeRcon Signal Descriptions30.4.3 D2624, 21, 1916 Reset Configuration Override 1provides an overview of the CCM signalsConfiguration Read/Write Access Write-Once Bits Read/Write AccessibilityBMT Chip Configuration Register CCRFollowing subsection describes the CCM registers SzenRcsc Reset Configuration Register RconBootps Rcsc Rpllsel RpllrefBoot Port Size Rcsc Chip Select ConfigurationBootps Port Size Configuration Chip Select ConfigurationReset Configuration Chip Identification Register CIRPIN PRN 10. Configuration During Reset Reset Configuration Pin States During ResetChip Mode Selection Clock ModeD2524 11. Chip Configuration Mode Selection Boot Device SelectionOutput Pad Strength Configuration Clock Mode SelectionChip Select Configuration 13. Clock Mode SelectionCCM does not generate interrupt requests Chapter Ieee 1149.1 Test Access Port Jtag Jtag Block Diagram Pin Function Selected External Signal Description31.3.1 Detailed Signal Description Jtagen Jtag EnableTclk Test Clock Input 31.3.1.3 TMS/BKPT Test Mode Select / BreakpointTRST/DSCLK Test Reset / Development Serial Clock Signal State to the Disable ModuleIdcode Register Memory Map/Register DefinitionMemory Map Instruction Shift Register IRBoundary Scan Register Bypass RegisterJtagcfmclkdiv Register Testctrl RegisterTAP Controller Jtag ModuleInstruction IR30 Instruction Summary Jtag Instructions5describes public and private instructions Jtag InstructionsExternal Test Instruction Extest Idcode InstructionSAMPLE/PRELOAD Instruction Highz Instruction Enabletestctrl InstructionLockoutrecovery Instruction Testleakage InstructionBypass Instruction Initialization/Application InformationRestrictions Clamp InstructionNonscan Chain Operation Chapter Mechanical Data MCF5282 Pinout 256 Mapbga PinoutMCF5282 Signal Description by Pin Number Mapbga Pin Pin FunctionsSecondary Tertiary PF4 PG4PG3 PG2PQA3 ETRIG1 VRH VDD Vssa VSS PUA1 VDDGPTB0 GPTA0PQS5 PQA0 MA0 VDD VddaPUA3 VSS Xtal Jtagen GPTB2Motorola Part Description Speed Temperature Ordering InformationOrderable Part Numbers 32-8 Rating Symbol Value Unit Maximum RatingsAbsolute Maximum Ratings1 HBM Rating Symbol2lists thermal resistance values Thermal CharacteristicsThermal Characteristics Characteristic Symbol Value UnitSolving equations 1 and 2 for K gives DC Electrical SpecificationsDC Electrical Specifications1 Characteristic Symbol Min Max UnitWait Doze Stop PLL Electrical Specifications Phase Lock Loop Electrical SpecificationsQadc Absolute Maximum Ratings Qadc Electrical CharacteristicsQadc Electrical Specifications Operating Parameter Symbol Min Max UnitIOH = TBD Parameter Symbol MinNum Parameter Symbol Min Max Unit Flash Memory CharacteristicsQadc Conversion Specifications Operating Sgfm Flash Program and Erase CharacteristicsExternal Interface Timing Characteristics Sgfm Flash Module Life Characteristics10. Processor Bus Input Timing Specifications Timings listed in -10are shown in Figure Processor Bus Output Timing Specifications11. External Bus Output Timing Specifications Name Characteristic Symbol Min Max Unit Control OutputsData Outputs Read/Write Internally Terminated Timing Read Bus Cycle Terminated by TA Read Bus Cycle Terminated by TEA Sras Scas Dramw Symbol Min Max Unit33.9 General Purpose I/O Timing 13. Gpio Timing1Sras SCAS1 Dramw 14. Reset and Configuration Override Timing Reset and Configuration Override TimingClkout Rsti Rsto 33.11 I2C Input/Output Timing Specifications15. I2C Input Timing Specifications between SCL and SDA Num Characteristic Min Max Units16. I2C Output Timing Specifications between SCL and SDA Fast Ethernet AC Timing SpecificationsNum Characteristic Min Max Unit MII Receive Signal Timing ERXD30, ERXDV, ERXER, and ErxclkMII Transmit Signal Timing ETXD30, ETXEN, ETXER, Etxclk 17. MII Receive Signal Timing19. MII Async Inputs Signal Timing MII Async Inputs Signal Timing Ecrs and Ecol19lists MII asynchronous inputs signal timing 18. MII Transmit Signal Timing20. MII Serial Management Channel Timing MII Serial Management Channel Timing Emdio and Emdc22lists Qspi timings DMA Timer Module AC Timing SpecificationsQspi Electrical Specifications 21lists timer module AC timings23. Jtag and Boundary Scan Timing Jtag and Boundary Scan Timing16. Boundary Scan Jtag Timing 17. Test Access Port TimingDebug AC Timing Specifications 24. Debug AC Timing SpecificationClkout VIL 20. Real-Time Trace AC Timing 20shows real-time trace timing for the values in TableACR1 Table A-1. CPU Space Register Memory MapAddress Name Mnemonic Size ACR0Qadc Table A-2. Module Memory Map OverviewAddress Module Size I2CChip Select Registers Table A-3. Register Memory MapAddress Name Mnemonic Size SCM Registers Sdramc RegistersDMA Registers Uart Registers UIP01 UISR1UIMR1 UBG21DMA Timer Registers I2C RegistersQspi Registers Interrupt Controller Ipsbar + 0xC56 IMRH1 SWACKR0IPRH1 IPRL1FEC Registers Global Interrupt Acknowledge Cycle RegistersGpio Registers Porttc PortasPortqs PortsdSetb Ipsbar + PortapSeta Ipsbar + PortbpClras ClraClrf ClrgEdge Port Registers Clock Module RegistersWatchdog Timer Registers Qadc Registers General Purpose Timer a RegistersGeneral Purpose Timer B Registers FlexCAN Registers Flash Registers MCF5282 User’s Manual Index Index-2 Index-3 Index-4 Index-5 Index-6 Index-7 Index-8 Index-9 Index-10 Index-11 Index-12 Index-13 Index-14 Index-15 Index-16

68K/ColdFire Interrupt Architecture Overview

10.1.1 Interrupt Controller Theory of Operation

Table 10-1. Interrupt Priority Within a Level

ICR[2:0]

Priority

Interrupt

Sources

10.1.1.1 Interrupt Recognition

10.1.1.2 Interrupt Prioritization