Saving and Restoring the Emac Programming Model

Memory Map/Register Set

•Execution of a MAC (or MSAC) instruction with 32-bit operands. If MACSR[R/T] is zero, multiplying two 32-bit numbers creates a 64-bit product that is truncated to the upper 40 bits; otherwise, it is rounded using round-to-nearest (even) method.

To understand the round-to-nearest-even method, consider the following example involving the rounding of a 32-bit number, R0, to a 16-bit number. Using this method, the 32-bit number is rounded to the closest 16-bit number possible. Let the high-order 16 bits of R0 be named R0.U and the low-order 16 bits be R0.L.

•If R0.L is less than 0x8000, the result is truncated to the value of R0.U.

•If R0.L is greater than 0x8000, the upper word is incremented (rounded up).

•If R0.L is 0x8000, R0 is half-way between two 16-bit numbers. In this case, rounding is based on the lsb of R0.U, so the result is always even (lsb = 0).

—If the lsb of R0.U = 1 and R0.L = 0x8000, the number is rounded up.

—If the lsb of R0.U = 0 and R0.L =0x8000, the number is rounded down.

This method minimizes rounding bias and creates as statistically correct an answer as possible.

The rounding algorithm is summarized in the following pseudocode:

if R0.L < 0x8000
then Result = R0.U
else if R0.L > 0x8000
then Result = R0.U + 1
else if lsb of R0.U = 0	/* R0.L = 0x8000 */
then Result = R0.U
else Result = R0.U + 1

The round-to-nearest-even technique is also known as convergent rounding.

3.4.1.1.2Saving and Restoring the EMAC Programming Model

The presence of rounding logic in the output datapath of the EMAC requires that special care be taken during the EMAC’s save/restore process. In particular, any result rounding modes must be disabled during the save/restore process so the exact bit-wise contents of the EMAC registers are accessed. Consider the following memory structure containing the EMAC programming model:

struct macState { int acc0; int acc1; int acc2; int acc3; int accext01; int accext02; int mask; int macsr;

} macState;

MOTOROLA

Chapter 3. Enhanced Multiply-Accumulate Unit (EMAC)

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Motorola MCF5281, MCF5282 user manual Saving and Restoring the Emac Programming Model

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 Emac ColdFire Flash Module CFM Chapter CacheChapter Static RAM Sram Chapter System Control Module SCM Chapter Power Management Interrupt Controller Modules Clock Module Chapter Edge Port Module Eport Signal DescriptionsChapter Chip Select Module Chapter External Interface Module EIM Chapter DMA Controller Module Chapter Synchronous Dram Controller Module Chapter Fast Ethernet Controller FEC Chapter General Purpose Timer Modules Gpta and Gptb Chapter Watchdog Timer ModuleChapter Programmable Interrupt Timer Modules PIT0-PIT3 20.3 Chapter Queued Serial Peripheral Interface Qspi Module Chapter DMA Timers DTIM0-DTIM3 Chapter I2C Interface Chapter Uart Modules Chapter FlexCAN Chapter Queued Analog-to-Digital Converter Qadc Chapter General Purpose I/O Module 27.4.7 Chapter Debug Support Reset Controller Module Chapter Ieee 1149.1 Test Access Port Jtag Chapter Chip Configuration Module CCM Chapter Mechanical Data Electrical CharacteristicsAppendix a Register Memory Map Paragraph Title Number 31.6.2 Nonscan Chain Operation 31-12 Title Number Illustrations 10-7 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 Audience Organization Xlv ColdFire Documentation Suggested ReadingGeneral Information Conventions Meaning Acronyms and AbbreviationsTable i. Acronyms and Abbreviated Terms Table ii. Notational Conventions Terminology ConventionsOperand Syntax Opcode Wildcard CCR ACCPort Name PST MSW LSW Table iii provides a revision history for this document Revision HistoryTable iii. Revision History SST Frsr Revision Date Substantive ChangesNumber Release Liv RAMBAR.’ 10.3.6/10-11 Substantive Changes Section/Page Revision Number Chapter Overview MCF5282 Key Features MCF5282 Key Features MCF5282 Key Features MCF5282 Key Features MCF5282 Key Features MCF5282 Key Features MCF5282 Block Diagram Configuration Tag Address Data Array Address Cache ConfigurationVersion 2 ColdFire Core Cache Debug Module SramFlash External Interface Module EIM System Control Module Chip Select Power ManagementGeneral Input/Output Ports Interrupt Controllers INTC0/INTC1 Uart Modules Test Access Port Periodic Interrupt Timers PIT0-PIT3 DMA Timers DTIM0-DTIM3General-Purpose Timers GPTA/GPTB Phase Locked Loop PLL Software Watchdog TimerReset DMA Controller MCF5282-Specific Features MCF5282-Specific Features IAG Processor PipelinesFifo Dsoc User Programming Model Processor Register Description Address Registers A0-A6 Data Registers D0-D7Stack Pointer A7 Program Counter PC Bits Name Description Condition Code Register CCR Supervisor Programming Model Emac Programming Model Bits Status Register SRSystem Byte Condition Code Register CCR Supervisor/User Stack Pointers A7 and OTHERA7 Programming Model Access Control Registers ACR0, ACR1Vector Base Register VBR Cache Control Register Cacr Local Memory Registers Additions to the Instruction Set ArchitectureName CPU Space Rc Written with Register Name Instruction Description Exception Processing OverviewISA Revision A+ New Instructions Vector Stacked Program Assignment NumberS Offset Hex Counter Exception Vector Assignments 0x100-0x3FC Next Exception Stack Frame DefinitionFormat Field Encodings Fault Status Encodings Access Error ExceptionProcessor Exceptions FS30 Definition Illegal Instruction Exception Address Error ExceptionDivide-By-Zero Privilege Violation Debug Interrupt Unimplemented Line-A OpcodeUnimplemented Line-F Opcode Fault-on-Fault Halt RTE and Format Error ExceptionReset Exception Trap Instruction Exception MAC DIV Emac FPU MMU ISA Debug VER REV MAC D0 Hardware Configuration Info Field DescriptionVER ICA ICA Icsiz RAM0SIZ ROM0SIZBusw DCA Dcsiz RAM1SIZ ROM1SIZ 8KB RAM 4KB RAM16KB RAM 32KB RAM Timing Assumptions Instruction Execution Timing Address10 Size Kbus Additional Operations CR/W Move Instruction Execution Times10. Misaligned Operand References Source Destination Ax+ D16,Ax D8,Ax,Xi Xxx.wl 11. Move Byte and Word Execution Times12. Move Long Execution Times Standard Two Operand Instruction Execution Times Standard One Operand Instruction Execution Times13. One Operand Instruction Execution Times 14. Two Operand Instruction Execution Times Standard Two Operand Instruction Execution Times 15. Miscellaneous Instruction Execution Times Miscellaneous Instruction Execution TimesEffective Address Opcode An+ D16,An D8,An,Xn*SF Xxx.wl D16,PC D8,PC,Xn*SF Effective Address Opcode An+ D16,An D8,An,X Xxx.wl #xxx Emac Instruction Execution Times16. Emac Instruction Execution Times ColdFire Instruction Set Architecture Enhancements Branch Instruction Execution Times17. General Branch Instruction Execution Times 18. BRA, Bcc Instruction Execution Times Assembler Syntax OperationAttributes Instruction Format Condition Codes Byte Reverse Register ByterevAssembler Syntax BYTEREV.L Dx Attributes Old Dx310 New Dx310 Find First One in Register Assembler SyntaxSTRLDSR #data Store/Load Status Register StrldsrSupported Starting with ISA A+ Multiply-Accumulate Unit Chapter Enhanced Multiply-Accumulate Unit Emac Introduction to the MAC Multiply-Accumulate Functionality Diagram Infinite Impulse Response IIR Filter General Operation Fractional Alignment Motorola 1describes Macsr fields Memory Map/Register SetMAC Status Register Macsr Macsr Field Descriptions Rounding Fractional Operation ModeSummary of S/U, F/I, and R/T Control Bits Operational Modes Saving and Restoring the Emac Programming Model MULS/MULU Following code performs the Emac state restoreMask Register Mask MAC.sz Ry,RxSF,eay&,Rw Emac Instruction Set Summary Command Mnemonic DescriptionEmac Instruction Execution Times 3summarizes Emac unit instructions Accumulator Mac Old Mov New Data RepresentationMac Mov Two’s Complement, Signed Fractional Equation MAC Opcodes MACSR.V = Emac Instruction Set Summary MACSR.Z = Emac Instruction Set Summary Motorola Emac Instruction Set Summary MCF5282 User’s Manual This chapter describes the MCF5282 cache operation Cache FeaturesCache Physical Organization Cache Physical Organization Interaction with Other Modules Cache Operation Cache Coherency and Invalidation Memory Reference Attributes CLNF10 Longword Address Bits Cache Miss Fetch Algorithm/Line FillsInitial Fetch Offset vs. Clnf Bits CACR31 CACR10 Type of Instruction Fetch Description Instruction Cache Operation as Defined by CACR31 Cache Registers Memory Map Cache Programming ModelCache Registers Cache Control Register Cacr Cinv Didi Disd Invi Invd Cenb CPDCeib DCM Dbwe DWP Eusp Clnf Cenb Ceib CACR31 CACR23 CACR22 Configuration Description Cache Configuration as Defined by CACR31, 23CACR23 CACR22 CACR21 CACR20 Configuration Operation Cache Invalidate All as Defined by CACR23, 22, 21 Bufw Access Control Registers ACR0, ACR1External Fetch Size Based on Miss Address and Clnf Between the processors local bus and the external bus BWE Sram Programming Model Sram FeaturesSram Operation PRI1 PRI2 SPV Sram Base Address Register RambarPRI1, PRI2 PRI12 Upper Bank Lower Bank Priority Sram Base Address Register Sram Initialization Typical Rambar Setting Examples Power ManagementSram Initialization Code Following loop initializes the entire Sram to zero Sram Programming Model Sram Programming Model MCF5282 User’s Manual Chapter ColdFire Flash Module CFM Features Block Diagram CFM Block Diagram CFM Array Memory Map Memory Map CFM Configuration Field CFM Configuration FieldFlash Base Address Register Flashbar Address Offset from array base Size Description Memory Map BA30 BA29 CFM Registers CFM Configuration Register CfmcrRegister Descriptions Flash registers are described in this subsection Cfmcr Field Descriptions CFM Clock Divider Register CfmclkdBits Name Description Divld PRDIV8 Cfmclkd Field Descriptions CFM Security Register Cfmsec SEC150 Description Cfmsec Field Descriptions Prot CFM Protection Register CfmprotCfmprot Field Descriptions PROTECT31 CFM Supervisor Access Register CfmsaccPROTECT2 Sector Data CFM Data Access Register CfmdaccCfmsacc Field Descriptions Only one Cfmustat bit should be cleared at a time CFM User Status Register Cfmustat10. Cfmustat Field Descriptions Cbeif Ccif Pviol Accerr Blank Command Name Description CFM Command Register Cfmcmd12. Cfmcmd User Mode Commands Read Operations CFM OperationWrite Operations Program and Erase Operations Consider the following example for fSYS = 66 MHz Setting the Cfmclkd RegisterThus the Flash state machine clock will be Program, Erase, and Verify Sequences 13summarizes the valid Flash user commands Flash Valid Commands13. Flash User Commands Meaning Description 13. Example Program Algorithm Flash User Mode Illegal Operations Stop Mode Flash Security Operation Master Mode Erase Verify Check ResetBack Door Access Interrupts Interrupt Source Interrupt Flag Local Enable14. CFM Interrupt Sources Cbeif Cbeie Interrupts MCF5282 User’s Manual Programming Model Memory Map and Registers Chip Configuration Module Memory Map Low-Power Interrupt Control Register LpicrMemory Map Following subsection describes the PMM registers Enbstop Lpicr Field Description Xlpmipl Settings Low-Power Control Register LpcrXlpmipl Interrupts Level Needed to Exit Low-Power Mode Lpmd Stpmd Lvdse Low-Power Modes Low-Power ModesPLL/CLKOUT Stop Mode Operation Functional Description Wait Mode Run ModeDoze Mode Stop Mode Static Random-Access Memory Sram Peripheral Behavior in Low-Power ModesPeripheral Shut Down ColdFire Core Chip Select Module Sdram Controller SdramcDMA Controller DMAC0-DMA3 Uart Modules UART0, UART1, and UART2 Queued Serial Peripheral Interface Qspi DMA Timers DMAT0-DMAT32.9 I2C Module Interrupt Controllers INTC0, INTC1 Reset ControllerFast Ethernet Controller FEC 2.14 I/O Ports Clock Module Chip Configuration Module Programmable Interrupt Timers PIT0, PIT1, PIT2 and PIT3 Watchdog TimerEdge Port Queued Analog-to-Digital Converter Qadc FlexCAN General Purpose Timers Gpta and Gptb Functional Description ColdFire Flash Module CPU and Peripherals in Low-Power Modes Summary of Peripheral State During Low-Power Modes2.25 BDM Jtag Jtag QadcBDM Functional Description MCF5282 User’s Manual Overview Features 3124 2316 158 Memory Map and Register DefinitionSCM Register Map Cache Register DescriptionsInternal Peripheral System Base Address Register Ipsbar Ipsbar Field Description Memory Base Address Register Rambar BDE Memory Base Address Register Rambar Rambar Field Description Crsr Field Descriptions Core Reset Status Register CrsrCore Watchdog Control Register Cwcr Register Descriptions CWT CWT Time-Out Period Core Watchdog Timer Delay Internal Bus Arbitration Core Watchdog Service Register Cwsr FEC Sdramc SRAM1 Mpark Rambar CPU DMA EIMMarb Arbitration Algorithms Round-Robin ModeOverview Fixed Timeout Prklast Lckouttime Fixed ModeBus Master Park Register Mpark M2PEN BCR24BIT M3PRTY M2PRTY M0PRTY M1PRTY Mpark Field Description Features System Access Control Unit Sacu Sacu Register Memory Map Memory Map/Register Definition3128 2724 2320 1916 1512 118 PACR1 PACR2 PACR3 PACR6 Peripheral Access Control Registers Pacr 0-PACR8Master Privilege Register MPR Ipsbar Offset Name Modules Controlled 12. Peripheral Access Control Registers PACRsBits Supervisor Mode User Mode Qspi UART2DTIM0 DTIM1 DTIM2 DTIM3 Gpacr Field Descriptions 13. Grouped PeripheralAccess Control Register14. Gpacr Accessctrl Bit Encodings Register Space Protected Modules Protected Ipsbar Offset 15. Gpacr Address SpaceGPACR0 EPORT, WDOG, PIT0-PIT3, QADC, GPTA, Gptb Modes of Operation Normal PLL Mode 2 11 PLL Mode Low-power Mode OperationExternal Clock Mode Clock Module Operation in Low-power Modes Clock Module Block Diagram Block Diagram Signal Properties Signal DescriptionsExtal Name Function Memory Map and Registers Synthesizer Control Register Syncr Register DescriptionsLolre MFD2 MFD1 MFD0 Locre Locen Disclk Fwkup STPMD1 STPMD0 RFD MFDMFD20 Stpmd Synthesizer Status Register SynsrOSC Pllmode Locks Synsr Field Descriptions Functional Description Clock ModeSystem Clock Modes System Clock Modes System Clock Mode PLL Options Clock Operation During ResetSystem Clock Generation Clock Out and Clock In Relationships PLL Operation Phase and Frequency Detector PFD Charge Pump/Loop Filter Charge Pump Current and MFD in Normal Mode OperationVoltage Control Output VCO Multiplication Factor Divider MFD PLL Lock Detection PLL Loss of Lock Conditions PLL Loss of Lock Reset Loss of Clock Detection Loss of Clock ResetAlternate Clock Selection Loss of Clock Summary 10. Stop Mode Operation Sheet 1 Loss of Clock in Stop Mode Stop 10. Stop Mode Operation Sheet 2Expected PLL Action ‘LC NRM ‘LK 10. Stop Mode Operation Sheet 3NRM ‘LC ‘LK PLL 10. Stop Mode Operation Sheet 4 Lose reference 10. Stop Mode Operation Sheet 5Clock Modes Functional Description MCF5282 User’s Manual 10.1 68K/ColdFire Interrupt Architecture Overview Chapter Interrupt Controller Modules 68K/ColdFire Interrupt Architecture Overview Interrupt Recognition Interrupt Controller Theory of OperationInterrupt Prioritization Interrupt Priority Within a Level Interrupt Vector Determination Interrupt Controller Base Addresses Memory MapInterrupt Controller Memory Map Interrupt Controller Number Base Address Interrupt Pending Registers IPRHn, IPRLn INT Maskall Interrupt Mask Register IMRHn, IMRLnIntmask Intfrc Interrupt Force Registers INTFRCHn, INTFRCLnIMRLn Field Descriptions IRQ Interrupt Request Level Register IRLRn Interrupt Control Register ICRnx, x = 1, 2 Interrupt Acknowledge Level and Priority Register IACKLPRn11. IACKLPRn Field Descriptions Level PRI 13. Interrupt Source Assignment for INTC0 Interrupt Sources12. ICRnx Field Descriptions DTIM0 CAP/REF IIFDTIM1 CAP/REF DTIM2 CAP/REF PIT0 PIF Gptb TOFPIT1 PIF PIT2 PIF 14. Interrupt Source Assignment for INTC1 Software and Level n Iack Registers SWIACKR, L1IACK-L7IACK Vector Prioritization Between Interrupt Controllers Low-Power Wakeup Operation 10-18 Ipbus Low-Power Mode OperationIntroduction Interrupt/General-Purpose I/O Pin Descriptions Edge Port Module Operation in Low-power ModesLow-power Mode Eport Operation Mode Exit Edge Port Module Memory Map Bits AccessRegisters Eport Data Direction Register Epddr Eport Pin Assignment Register EpparEPPA7 EPPA5 EPPA4 EPPA3 EPPA2 EPPA1 Epdd Field Descriptions Edge Port Interrupt Enable Register EpierEdge Port Data Register Epdr Epdr Field Descriptions Edge Port Pin Data Register EppdrEdge Port Flag Register Epfr EPF7-EPF1 Epfr Field Descriptions 11-8 1lists signals used by the chip select module Chip Select Module SignalsChip Select Module Signals Signal Description D3124 D2316 D158 D70 Byte Enables/Byte Write Enable Signal SettingsTransfer Size Port Size General Chip Select Operation Chip Select Operation Accesses by Matches in CSARs and DACRs External Boot Chip Select Operation12.3.1.1 8-, 16-, and 32-Bit Port Sizing BS2 BS1 BS0 D1918 Boot Device/Data Port Size D1918 External Boot Chip Select ConfigurationChip Select Registers Chip Select Registers Chip Select Address Registers CSAR0-CSAR6 Chip Select Module RegistersCSARs, -2,specify the chip select base addresses 6describes Csarba 7describes Csmr fields Chip Select Mask Registers CSMR0-CSMR6CSARn Field Description Csmr n Field Descriptions 8describes CSCRn fields Chip Select Control Registers CSCR0-CSCR6SD,UC PS1 PS0 BEM Bstr Bstw No internal TA is asserted. Cycle is terminated externally CSCRn Field Descriptions 12-10 Signal Name Description Clkout Edge Bus and Control SignalsColdFire Bus Signal Summary TIP Bus CharacteristicsData Transfer Operation Bus Cycle Execution Chip-Select Module Output Timing Diagram Accesses by Matches in CSCRs and DACRs State Cycle Data Transfer Cycle StatesBus Cycle States Read Cycle System MCF5282 3describes the six states of a basic write cycle Write cycle timing diagram is shown in FigureWrite Cycle Read Cycle with Fast Termination Fast Termination Cycles Burst Cycles Back-to-Back Bus Cycles A32 Longword Accesses Allowable Line Access PatternsLine Transfers Line Read Bus Cycles 13shows timing when internal termination is used 16. Line Write Burst 2-1-1-1, Internal/External Termination Line Write Bus Cycles 17shows a line burst write with one wait-state insertion Misaligned Operands 19. Example of a Misaligned Longword Transfer 32-Bit Port 13-16 Chapter Signal Descriptions MCF5282 Block Diagram with Signal Interfaces Sdram Controller Signals MCF5282 Signal DescriptionSignal Name Abbreviation Function External Memory Interface Clock and Reset Signals Signal Name Abbreviation FunctionChip Configuration Module External Interrupt Signals FlexCAN Signals Queued Serial Peripheral Interface Qspi Signals2C Signals Uart Signals DMA Timer Signals General Purpose Timer SignalsAnalog-to-Digital Converter Qadc Signals Debug Support Signals Power and Reference Signals 2lists signals in alphabetical order by abbreviated nameTest Signals Abbreviation Function MCF5282 Alphabetical Signal Index Vddpll TCK Chip Configuration/Mode Selection MCF5282 Signals and Pin Numbers Sorted by FunctionSecondary External Memory Interface and Ports Sdram Controller Chip SelectsExternal Interrupts Port Ethernet FlexCAN UARTs General Purpose Timers Debug and Jtag Test Port Control DMA TimersQueued Analog-to-Digital Converter Qadc Test Single-Chip ModePower Supplies Listing of signals that do not default to a Gpio function External Boot ModePin Reset States at Reset Single-Chip Mode Signal Reset Clock and Reset Signals External Interface Module EIM Signals 14.2 MCF5282 External SignalsAddress Bus A230 Data Bus D310 Transfer Error Acknowledge TEA Output Enable OETransfer Acknowledge TA Read/Write R/W Transfer In Progress TIP Transfer Start TSChip Selects CS60 Transfer Size Encoding Sdram Controller Signals Chip Configuration Signals Clock and Reset Signals Ethernet Module Signals External Interrupt Signals Collision Ecol Transmit Error EtxerReceive Clock Erxclk Receive Data Valid Erxdv Queued Serial Peripheral Interface Qspi Signals Uart Module Signals FlexCAN Signals14.2.9 I2C Signals General Purpose Timer Signals DMA Timer Signals Analog-to-Digital Converter Signals Debug Support Signals Development Serial Input/Test Data DSI/TDI Breakpoint/Test Mode Select BKPT/TMSDevelopment Serial Output/Test Data DSO/TDO Test Clock Tclk Debug Data DDATA30 Test SignalsProcessor Status Outputs PST30 Test Test Power and Reference Signals 14-34 Definitions Overview DACR0 Block Diagram and Major ComponentsDACR1 Scas Sras Scke SDRAMCS10 Dramw Sdram Controller Operation Sdram CommandsCommand Definition 2describes the behavior of Dram signals in synchronous mode Dram Controller SignalsMemory Map for Sdramc Registers Dram controller registers memory map is shown in Table DCR, shown in -2,controls refresh logic Dram Control Register DCR4describes DCR fields DCR Field Descriptions 5describes DACRn fields Dram Address and Control Registers DACR0/DACR1DACRn Field Descriptions Bit 15-7 Dram Controller Mask Registers DMR0/DMR1 Bit Associated Access Type Access Definition6describes DMRn fields DMRn Field Descriptions Address Multiplexing General Synchronous Operation GuidelinesGeneric Address Multiplexing Scheme Address Pin Row Address Column Address MCF5282 Pins Row ColumnPins Row Column 15-12 Pins MCF5282 Burst Page ModeSdram Byte Strobe Connections Interfacing Example Burst Read Sdram Access Auto-Refresh Operation Burst Write Sdram Access Auto-Refresh Operation Self-Refresh Operation Self-Refresh Operation Initialization Sequence Mode Register Settings Parameter Specification 25. Sdram Example SpecificationsSdram Example Clkout DCR Initialization Sdram Interface ConfigurationDacr Initialization 26. Sdram Hardware Connections DACRs should be programmed as shown in Figure Bits Name Setting Description28. Dacr Initialization Values Casl CBM Imrs 29. DMR0 Initialization Values DMR Initialization 30. Mode Register Initialization Mode Register Initialization31. Mode Register Mapping to MCF5282 A310 MCF5282 Pins Sdram Pins Mode Register Initialization Initialization Code Mode Register Initialization SequencePrecharge Sequence Refresh Sequence 15-25 15-26 Chapter DMA Controller Module Channel 0 Channel 1 Channel 2 Channel DMA Module Features DMA Request Control Dmareqc DMA DMA Transfer Overview Memory Map for DMA Controller Module Registers DMA Controller Module Programming Model Destination Address Registers DAR0-DAR3 Source Address Registers SAR0-SAR3SAR DAR BCR Byte Count Registers BCR0-BCR3 3describes DCRn fields DMA Control Registers DCR0-DCR3DCRn Field Descriptions BWC Sinc Ssize Dinc Dsize Start Encoding BCR24BIT = BWC DSR n Field Descriptions DMA Status Registers DSR0-DSR34describes DSRn fields Transfer Requests Cycle-Steal and Continuous Modes DMA Controller Module Functional DescriptionBSY Done Dual-Address Transfers Data Transfer Modes Programming the DMA Controller Module Channel Initialization and StartupChannel Prioritization Auto-Alignment Data Transfer Bandwidth Control Termination 16-16 Chapter Fast Ethernet Controller FEC Interface Options Full and Half Duplex Operation17.2.2.1 10 Mbps and 100 Mbps MII Interface Primary operational modes are described in this section Internal Loopback 17.2.2.2 10 Mpbs 7-Wire Interface OperationAddress Recognition Options PAD FEC Top-Level Functional Diagram 17-5 User Initialization Prior to Asserting Ecretheren Initialization SequenceHardware Controlled Initialization Ecretheren De-Assertion Effect on FEC User Initialization After Asserting Ecretheren Microcontroller InitializationFEC User Initialization Before Ecretheren Microcontroller Initialization Wire Mode Configuration MII ModeSignal Description Emac pin Network Interface Options FEC Frame Transmission FEC Frame Reception Ethernet Address Recognition Ethernet Address Recognition-Receive Block Decisions Ethernet Address Recognitionq-Microcode Decisions Hash Algorithm Bit DA Bit Hash Hash Decimal Hex Value Destination Address to 6-Bit Hash 17-15 Full Duplex Flow Control Pause Frame Field Specification Internal and External Loopback Inter-Packet Gap IPG TimeCollision Handling Transmission Errors Ethernet Error-Handling Procedure Heartbeat Reception Errors Detailed Memory Map Control/Status Registers Top Level Module Memory MapModule Memory Map 10. FEC Register Memory Map MIB Block Counters Memory Map Mnemonic Description Offset 11. MIB Counters Memory Map Following sections describe each register in detail RegistersEthernet Interrupt Event Register EIR Babr Babt GRA TXF TXB RXF RXB MII Eberr Hberr Ieeetsqe 17-25 Babr Babt GRA TXF TXB RXF RXB MII Interrupt Mask Register EimrReceive Descriptor Active Register Rdar Rdesactive Transmit Descriptor Active Register Tdar Xdesactive Etheren ResetEthernet Control Register ECR Data MII Management Frame Register Mmfr16. ECR Field Descriptions Bit Name Description 17. Mmfr Field Descriptions Dispreamble MII Speed Control Register MscrDispreamble Miispeed Mibdisable Mibdisable MibidleMIB Control Register Mibc 19. Programming Examples for Mscr Maxfl Receive Control Register RCRFCE Bcrej Prom Miimode DRT Loop FCE GTS Transmit Control Register TCRTfcpause Fden Tfcpause Physical Address Low Register Palr22. TCR Field Descriptions PADDR1 Physical Address High Register PaurPADDR2 Type Descriptor Individual Upper Address Register Iaur Opcode/Pause Duration Register OPD24. Paur Field Descriptions Opcode IADDR1 Descriptor Individual Lower Address IalrBits Name Descriptions IADDR2 Descriptor Group Lower Address Galr Descriptor Group Upper Address Gaur27. Ialr Field Descriptions GADDR1 Xwmrk Fifo Transmit Fifo Watermark Register TfwrGADDR2 Rbound Fifo Receive Bound Register Frbr30. Tfwr Field Descriptions Rfstart Fifo Receive Start Register FrsrReceive Descriptor Ring Start Erdsr Xdesstart Transmit Buffer Descriptor Ring Start EtsdrRdesstart Rbufsize Receive Buffer Size Register Emrbr34. Etdsr Field Descriptions Driver/DMA Operation with Transmit BDs Buffer DescriptorsDriver/DMA Operation with Buffer Descriptors Driver/DMA Operation with Receive BDs RO1 RO2 Ethernet Receive Buffer Descriptor RxBD Word Location Field Name Description 36. Receive Buffer Descriptor Field DefinitionsRO1 Erdsr Ethernet Transmit Buffer Descriptor TxBD TO1 TO1 TO2 ABC 17-51 17-52 Low-power Mode Watchdog Operation Mode Exit Watchdog Module Operation in Low-power Modes Refer to -2for an overview of the watchdog memory map SignalsWatchdog timer module has no off-chip signals Watchdog Control Register WCR 16-bit WCR configures watchdog timer operationWatchdog Timer Module Memory Map WCR Field Descriptions Watchdog Modulus Register WMR Watchdog Count Register Wcntr Watchdog Service Register WSRWMR Field Descriptions WC9 WC8 WS7 WS6 WS5 WS4 WS3 WS2 WS1 WS0 WS9 WS8 Chapter Programmable Interrupt Timer Modules PIT0-PIT3 Low-power Mode PIT Operation Mode Exit PIT module has no off-chip signalsPIT Module Operation in Low-power Modes Ipsbar Offset Access For PITx Bits Address Programmable Interrupt Timer Modules Memory Map PRE3 PRE2 PRE1 PRE0 PIT Control and Status Register PcsrDoze Halted OVW PIE PIF RLD PRE PIF PIT Modulus Register PMR This subsection describes the PIT functional operation Set-and-Forget Timer OperationPIT Count Register Pcntr Timeout Specifications Free-Running Timer OperationSystem clock PIT Clock Counter Interrupt Operation Interrupt Request Flag Enable Bit Timeout4shows the interrupt request generated by the PIT PIT Interrupt Requests Chapter General Purpose Timer Modules Gpta and Gptb GPT Block Diagram Function Reset State Pull-up Name Register Bit Signal DescriptionGPTn20 Pin GPTn3 Ipsbar Offset Bits AccessSYNCn GPT Modules Memory Map IOS GPT Input Capture/Output Compare Select Register Gptios GPT Output Compare 3 Mask Register GPTOC3M GPT Compare Force Register GpcforcGptios Field Descriptions FOC GPT Counter Register Gptcnt GPT Output Compare 3 Data Register GPTOC3DGPTOC3M Field Descriptions OC3D Gptcnt Field Descriptions GPT System Control Register 1 GPTSCR1Gpten Tffca Gpten GPT Control Register 1 GPTCTL1 GPT Toggle-On-Overflow Register GpttovTOV OM3 OL3 OM2 GPT Control Register 2 GPTCTL2 GPT Interrupt Enable Register Gptie11. GPTCL1 Field Descriptions EDG3B EDG3A EDG2B EDG2A 13. Gptie Field Descriptions GPT System Control Register 2 GPTSCR2 GPT Flag Register 2 GPTFLG2 GPT Flag Register 1 GPTFLG1 Pulse Accumulator Control Register Gptpactl GPT Channel Registers GPTCnCcnt PAE Pamod Pedge CLK Paovi PAI Paovf Paif Pulse Accumulator Flag Register GptpaflgPaclk Pacnt Pulse Accumulator Counter Register Gptpacnt19. Gptpaflg Field Descriptions GPT Port Data Direction Register Gptddr GPT Port Data Register Gptport22. Gptddr Field Descriptions Portt Output Compare PrescalerInput Capture Pulse Accumulator Event Counter Mode General-Purpose I/O Ports Gated Time Accumulation ModePulse Accumulator OM3 OL3 Dir Function 23. GPT Settings and Pin FunctionsEDGx OMx OC3Mx Pin Data Driven Comments 24lists the interrupt requests generated by the timer ResetInterrupt Request Flag Enable Bit Interrupts GPT Channel Interrupts CnF Timer Overflow TOFPulse Accumulator Overflow Paovf Pulse Accumulator Input Paif 20-23 20-24 Chapter DMA Timers DTIM0-DTIM3 Prescaler DMA Timer Programming ModelKey Features Output Mode Capture ModeDMA Timer Module Memory Map Reference Compare Orri FRR CLK RST DMA Timer Mode Registers DTMRn 2describes the DTMRn fields DMA Timer Extended Mode Registers DTXMRnDTMRn Field Descriptions DTXMR3 DTXMRn Field Descriptions DMA Timer Event Registers DTERn3describes the DTXMRn fields DMA Timer Capture Registers DTCRn DMA Timer Reference Registers DTRRn4describes the DTERn fields DTERn Field Descriptions DMA Timer Counters DTCNn Using the DMA Timer Modules Code Example T0LOOP Calculating Time-Out Values Module Description Chapter Queued Serial Peripheral Interface Qspi Module Qspiclk Interface and SignalsQspi RAM Signal Name Hi-Z or Actively Driven Function Qspi Input and Output Signals and FunctionsOperation Internal Bus Interface Qspi RAM Relative Address Register 0x00 Receive RAM0x01 0x0F Transmit RAM Command RAMBaud Rate Selection Qspiclk Frequency as Function of System Clock and Baud Rate Transfer DelaysSystem Clock 66.67 MHz Transfer Length Qspi Registers Programming Model 4gives QMR field descriptions Qspi Mode Register QMRQMR Field Descriptions Value Bits per transfer Qspics Qmrcpol = Qspi Delay Register QdlyrQmrcpha = = Qdlyrqcd Qcrcont = = Qdlyrdtl QCD 5gives Qdlyr field descriptions Qspi Wrap Register QWR6gives QWR field descriptions Qdlyr Field Descriptions QIR Field Descriptions Qspi Interrupt Register QIR7describes QIR fields Addr Qspi Address Register QARQspi Data Register QDR QCR0-QCR15 Field Descriptions Command RAM Registers QCR0-QCR158gives QCR field descriptions QSPICS30 Programming ExampleQspiclk QS2 Qspidout QS3 Qspidin QS4 QS5 22-17 22-18 Ucts Urts Urxd Utxd Uart Serial Module Overview Ipsbar Offset 3124 2316 158 Register DescriptionsUart Module Memory Map ERR Uart Mode Registers 1 UMR1n 2describes UMR1n fields Parity Mode Parity Type PT=UMR1n Field Descriptions CTS UMR2 n Field Descriptions Uart Mode Register 2 UMR2n3describes UMR2n fields 4describes USRn fields Uart Status Registers USRnUMR2n Field Descriptions USRn Field Descriptions RCS TCS Uart Clock Select Registers UCSRn5describes UCSRn fields UCSRn Field Descriptions Uart Command Registers UCRnRCS Dtin UCR n Field Descriptions Bits Value Command Description UCRn Field Descriptions Uart Receive Buffers URBnUart Transmit Buffers UTBn 7describes UIPCRn fields Uart Input Port Change Registers UIPCRnUipcr n Field Descriptions COS CTS Uart Auxiliary Control Register UACRn UACRs, shown in -7,control the input enableUart Interrupt Status/Mask Registers UISRn/UIMRn 8describes UACRn fields Uisr n/UIMR n Field Descriptions Uart Baud Rate Generator Registers UBG1n/UBG2n9describes UISRn and UIMRn fields Uart Input Port Register UIPn Uart Output Port Command Registers UOP1n/UOP0n10describes UIPn fields 11describes UOP1 and UOP0 fields 11. UOP1/UOP0 Field Descriptions Ucts Uart Module Signal DefinitionsIRQ Programmable Divider 12. Uart Module SignalsTransmitter/Receiver Clock Source Calculating Baud Rates Following sections describe how to calculate baud ratesSystem Clock Baud Rates Sysclk Transmitter Transmitter and Receiver Operating ModesTherefore UBG1n = 0x00 and UBG2n = 0xD6 External Clock 23-21 Receiver 20. Transmitter Timing Diagram 21shows receiver functional timing Fifo Stack 23-24 Looping Modes Automatic Echo ModeLocal Loop-Back Mode Remote Loop-Back Mode Multidrop Mode 25. Multidrop Mode Timing Diagram Programming Bus OperationRead Cycles Write Cycles Setting up the Uart to Request DMA Service Setting up the Uart to Generate Core InterruptsInterrupt and DMA Request Initialization 13. Uart Interrupts Uart Module Initialization Sequence Register Setting15shows the Uart module initialization sequence 14. Uart DMA Requests 26. 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 Features Ifdr Acknowledge bit generation/detection Bus-busy detectionIadr SCL SDA 24.4 I2C Protocol 24.3 I2C System Configuration Repeated Start Arbitration Procedure Handshaking Clock SynchronizationClock Stretching SCL1 SCL2 2describes I2ADR fields 24.5.1 I2C Address Register I2ADRI2C Interface Memory Map I2ADR Field Descriptions 3describes I2FDRIC 24.5.2 I2C Frequency Divider Register I2FDRI2FDR Field Descriptions Divider 4describes I2CR fields 24.5.3 I2C Control Register I2CRI2CR Field Descriptions IEN Iien 5describes I2SR fields 24.5.4 I2C Status Register I2SRI2SR Field Descriptions ICF Iaas IBB IAL SRW IIF 24.5.5 I2C Data I/O Register I2DR 24.6 I2C Programming Examples Post-Transfer Software Response Generation of Start I2SR 24.6.4 Generation of Stop Generation of Repeated Start Slave Mode Arbitration Lost IAAS=1 RXAK=SRW=1 Write 24-16 Chapter FlexCAN Cantx Canrx RAM MB3 MB2 MB1 MB0 FlexCAN Memory Map 25.1.2 External SignalsFlexCAN Memory Map Message Buffers Can SystemMessage Buffer Structure Typical can system is shown below in Figure Common Fields for Extended and Standard Format Frames Message Buffer Codes for Transmit Buffers Common Extended/Standard Format FramesMessage Buffer Codes for Receive Buffers Fields for Extended Format Frames Message Buffer Memory MapFields for Standard Format Frames Extended Format Frames Idhigh Idlow Functional OverviewMessage Buffers Receive Process Transmit Process Self-Received Frames Message Buffer Handling Receive Message Buffer Deactivation Serial Message Buffers SMBsTransmit Message Buffer Deactivation Locking and Releasing Message Buffers Remote Frames Time Stamp Listen-Only ModeOverload Frames Bit Timing Configuring the FlexCAN Bit TimingExamples of System Clock/CAN Bit-Rate/S-Clock Freq Mhz Time-quanta/bit Value + FlexCAN Error Counters FlexCAN Initialization Sequence Special Operating Modes Debug ModeLow-Power Stop Mode for Power Saving Canmcr Interrupts Auto-Power Save Mode Programmer’s Model Can Module Configuration Register Canmcr8describes the Canmcr fields Stop FRZ Halt Notrdy Wakemsk Softrst Frzack Stop Canmcr Field Descriptions 9describes the CANCTRL0 fields FlexCAN Control Register 0 CANCTRL0 Transmit Pin Configuration 10. Transmit Pin ConfigurationFlexCAN Control Register 1 CANCTRL1 11describes the CANCTRL1 fields 12describes the Presdiv fields Prescaler Divide Register Presdiv11. CANCTRL1 Field Descriptions Samp 13describes the CANCTRL2 fields FlexCAN Control Register 2 CANCTRL212. Presdiv Field Descriptions 13. CANCTRL2 Field Descriptions 14describes the Timer fields Free Running Timer Timer14. Timer Field Descriptions Rx Mask Registers 12. Rx Mask Registers RXGMASK, RX14MASK, and RX15MASK Receive Mask Registers RXGMASK, RX14MASK, RX15MASK 16. RXGMASK, RX14MASK, and RX15MASK Field Descriptions FlexCAN Error and Status Register Estat17describes the Estat fields Biterr 17. Estat Field Descriptions 18describes the Imask fields Interrupt Mask Register ImaskBUF15M BUF14M BUF13M BUF10M BUF9M BUF8M 19describes the Iflag fields Interrupt Flag Register Iflag18. Imask Field Descriptions 19. Iflag Field Descriptions FlexCAN Transmit Error Counter Txectr FlexCAN Receive Error Counter Rxectr20describes the Rxectr fields 21describes the Txectr fields Chapter General Purpose I/O Module MCF5282 Ports Module Block Diagram Sdram control Bit DMA timers Uart transmit/receive FeaturesOverview Modes of Operation MCF5282 Ports External Signals External Signal Description SDA ErxerSCL UCTS0 Memory Map/Register Definition 31-24 23-16 15-8 AccessRegister Overview MCF5282 Ports Module Memory Map Ddreh Ddrel Ddrb DdrcClra Clrb Clrc Clrd Clre Clrf Clrg Clrh Port Output Data Registers 8-bit Port Output Data Registers PORTn PORTn bits are described in Table Port Data Direction Registers DDRnPORTn 8-bit, 7-bit, 6-bit, and 4-bit Field Descriptions Register Bits Name Description Port Data Direction Register 7-bit 10. Port Pin Data/Set Data Registers 8-bit Port Pin Data/Set Data Registers PORTnP/SETn PORTnP/SETn bits are described in Table Port Clear Output Data Registers CLRnPORTnP/SETn 8-bit, 6-bit, and 4-bit Field Descriptions PORTUAP/SETUA CLRn 8-bit,7-bit, 6-bit, and 4-bit Field Descriptions CLRn register bits are described in Table Port Size Pbpa Reset Pcdpa Reset Reset Values for Pbcdpar BitsExternal Boot Port B/C/D Pin Assignment Register Pbcdpar PEPA3 Port E Pin Assignment Register PeparPepar Field Descriptions Single chip mode 10. Reset Values for Pepar Bits and Fields 11. Pfpar Field Descriptions Port F Pin Assignment Register PfparPfpar controls the pin function of port F75 12. Pjpar Field Descriptions Port J Pin Assignment Register PjparPjpar controls the pin function of port J Port AS Pin Assignment Register Paspar Port SD Pin Assignment Register PsdparPsdpar controls the pin function of port SD Paspar controls the pin function of port AS 14. Paspar Field Descriptions Port EH/EL Pin Assignment Register Pehlpar Pqspar controls the pin function of port QS Port QS Pin Assignment Register Pqspar15. Pehlpar Field Descriptions ECOL, ERXCLK, ERXDV, ERXD0, Ecrs PTCPA3 PTCPA2 PTCPA1 PTCPA0 Port TC Pin Assignment Register PtcparPtcpar controls the pin function of port TC PTDPA3 PTDPA2 PTDPA1 PTDPA0 Port TD Pin Assignment Register PtdparPtdpar controls the pin function of port TD Puapar controls the pin function of port UA Port UA Pin Assignment Register Puapar Clkout Input PIN Register PIN Data Port Digital I/O Timing Clkout Output Data Register Output PIN Initialization/Application Information Chapter Queued Analog-to-Digital Converter Qadc Qadc Block Diagram Modes of Operation Debug Mode Port QA Analog Input Signals Port QA Signal Functions Port QB Analog Input Signals Port QB Signal FunctionsPort QA Digital Input/Output Signals Multiplexed Address Output Signals External Trigger Input SignalsMultiplexed Analog Input Signals Port QB Digital I/O Signals Dedicated Analog Supply Signals Voltage Reference SignalsDedicated Digital I/O Port Supply Signal Multiplexed Analog Input Channels Qadc Memory Map Qadc Module Configuration Register QadcmcrThis subsection describes the Qadc registers Port Data Registers Portqa and Portqb Qadc Test Register Qadctest ANZ ANY ANX ANW Port QA and QB Data Direction Register Ddrqa and Ddrqb This subsection describes the Qadc control registers Control RegistersQadc Control Register 0 QACR0 QPR6 Qadc Control Register 0 QACR0 QACR0 Field Descriptions Divisor Prescaler fSYS Divide-by ValuesQPR60 CIE1 Qadc Control Register 1 QACR1CIE1 PIE1 SSE1 Queue 1 Operating Modes Operating Mode Qadc Control Register 2 QACR2 Resume CIE2 PIE2 SSE2 Queue 2 Operating Modes QACR2 Field DescriptionsCIE2 BQ2 Qadc Status Register 0 QASR0 Status RegistersThis subsection describes the Qadc status registers MQ2128 Operating Modes 27-20 Queued Analog-to-Digital Converter Qadc 27-21 QS7 QS6 CWP5 CWP4 CWP3 CWP2 CWP1 CWP0 CF1 PF1 CF2QS9 QS8 10. QASR0 Field Descriptions Scan Mode Queue Operation PF Asserts?11. CCW Pause Bit Response CWP Queue 1/Queue 2 States 12. Queue Status 12. Queue Status Transition Qadc Status Register 1 QASR1 Conversion Command Word Table CCW IST1 IST0 BYP Port Signal Name Non-Multiplexed Input Signals Channel Number15. Input Sample Times IST10 Input Sample Times Multiplexed Input Signals Channel Number 17. Multiplexed Channel Assignments and Signal DesignationsResult Registers Right-Justified Unsigned Result Register Rjurr Left-Justified Unsigned Result Register Ljurr Left-Justified Signed Result Register Ljsrr18. Rjurr Field Descriptions Result External Multiplexing 27.7 Functional DescriptionResult Coherency External Multiplexing Operation 18. External Multiplexing Configuration Module Version Options Analog SubsystemAnalog-to-Digital Converter Operation 21. Analog Input Channels Conversion Cycle Times 19. Qadc Analog Subsystem Block Diagram Sample Buffer Channel Decode and Multiplexer Comparator Digital Control SubsystemBias Successive Approximation Register SAR Queue Priority Queue Priority Timing Examples 22. Qadc Queue Operation with Pause 22. Trigger Events Queue Priority Schemes23. Status Bits Events 23. 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 Reserved Mode Disabled ModeScan Modes Single-Scan Modes Software-Initiated Single-Scan Mode Externally Gated Single-Scan Mode Externally Triggered Single-Scan Mode Interval Timer Single-Scan Mode Continuous-Scan Modes Software-Initiated Continuous-Scan Mode Externally Gated Continuous-Scan Mode Externally Triggered Continuous-Scan Mode Qadc Clock Qclk Generation Periodic Timer Continuous-Scan Mode 42. Qadc Clock Subsystem Functions Periodic/Interval Timer 43illustrates the operation of the queue structure Conversion Command Word Table 43. Qadc Conversion Queue Operation Queued Analog-to-Digital Converter Qadc 27-61 Result Word Table Signal Connection Considerations Analog Power Signals Analog Reference Signals Conversion Timing Schemes 45. Errors Resulting from Clipping 46. External Positive Edge Trigger Mode Timing with Pause 47. Gated Mode, Single Scan Timing 48. Gated Mode, Continuous Scan Timing Analog Supply Filtering and Grounding 49. Star-Ground at the Point of Power Supply Origin Accommodating Positive/Negative Stress Conditions 50. Input Signal Subjected to Negative Stress Iinjp Iinjn Analog Input Considerations 52. External Multiplexing of Analog Signal Sources 53. Electrical Model of an A/D Input Signal Analog Input Pins Source Resistance RF + Rsrc 100 Ω 10 kΩ 100 kΩ Settling Time for the External Circuit24. External Circuit Settling Time to 1/2 LSB Interrupt Operation Error Resulting from Leakage25. Error Resulting from Input Leakage IOff 26. Qadc Status Flags and Interrupt Sources Interrupt SourcesQueue Queue Activity Status Interrupt Flag PF1 PIE1 Chapter Reset Controller Module Rsti Reset Controller Signal PropertiesRsto Name Direction Input Reset Controller Memory Map Reset Control Register RCR Lvdf Reset Status Register RSRLvdie Soft WDR POR WDR RSR Field Descriptions Power-On Reset Reset SourcesReset Source Summary Source Type Watchdog Timer Reset External ResetLoss-of-Clock Reset Loss-of-Lock Reset Reset Control Flow Reset Control Flow Synchronous Reset Requests Concurrent ResetsInternal Reset Request Power-On Reset/Low-Voltage Detect Reset Reset Status Flags 28-12 Processor/Debug Module Interface Debug module is shown in Figure Debug Module Signals Signal Description PST30 Definition Hex Real-Time Trace SupportProcessor Status Encoding PST30 Definition Hex Binary Begin Execution of Taken Branch PST = Ddata Clkout PST Ablr AatrAbhr CSR BDM/Breakpoint Registers Revision a Shared Debug ResourcesRev. a Shared BDM/Breakpoint Hardware DRc4-0 Register Name Abbreviation Initial State 5describes Aatr fields Address Attribute Trigger Register AatrAatr Field Descriptions TMM Address Breakpoint Registers ABLR, Abhr Address Breakpoint Registers ABLR, Abhr 6describes Ablr fields Configuration/Status Register CSR7describes Abhr fields Ablr Field Description CSR Field Descriptions 8describes CSR fields IPI Data Breakpoint/Mask Registers DBR, Dbmr 10describes Dbmr fields Program Counter Breakpoint/Mask Registers PBR, Pbmr9describes DBR fields 12describes PBR fields Trigger Definition Register TDR13describes Pbmr fields 12. PBR Field Descriptions 14. TDR Field Descriptions 14describes TDR fields CPU Halt Background Debug Mode BDMEdum Eduu 29-17 DSO BDM Serial InterfaceClkout Dsclk DSI Transmit Packet Format Receive Packet Format15describes receive BDM packet fields 16describes transmit BDM packet fields Section Command BDM Command Set17. BDM Command Summary 18describes BDM fields ColdFire BDM Command FormatExtension Words as Required 18. BDM Field Descriptions 16. Command Sequence Diagram Command Sequence Diagrams Read A/D Register RAREG/RDREG Command Set DescriptionsCommand Sequence Read Memory Location Read Write A/D Register WAREG/WDREG 22. Read Command Sequence 21. Read Command/Result Formats Write Memory Location Write 23. Write Command Format Dump Memory Block Dump Set is returned if a bus error occursOperands are sent as 16 and 32 bits, respectively 25. Dump Command/Result Formats Fill Memory Block Fill 26. Dump Command Sequence 28. Fill Command Sequence 27. Fill Command Format No Operation NOP Resume Execution GO 19. Control Register Map Read Control Register RcregRc encoding BDM Accesses of the Emac Registers BDM Accesses of the Stack Pointer Registers A7 SSP, USP Write Control Register Wcreg 35. Wcreg Command/Result Formats 20shows the definition of DRc encoding Read Debug Module Register Rdmreg DRc40 Debug Register Definition Mnemonic Initial State Write Debug Module Register Wdmreg20. Definition of DRc Encoding-Read Theory of Operation Real-Time Debug Support21. DDATA30/CSRBSTAT Breakpoint Response Breakpoint Status Emulator Mode Concurrent BDM and Processor Operation Processor Status, Ddata Definition 22. PST/DDATA Specification for User-Mode InstructionsUser Instruction Set Instruction Operand Syntax 29-41 29-42 23. PST/DDATA Specification for MAC Instructions Supervisor Instruction Set 24. PST/DDATA Specification for Supervisor-Mode Instructions Motorola-Recommended BDM Pinout Reset DSIGND Dsclk GND PST3 PST2 PST1 PST0 DDATA3 DDATA2 DDATA1 DDATA0 29-46 Chapter Chip Configuration Module CCM Chip Configuration Module Block Diagram Single-Chip Mode 30.4.3 D2624, 21, 1916 Reset Configuration Override Signal Descriptions1provides an overview of the CCM signals Rcon Configuration Read/Write Access Write-Once Bits Read/Write Accessibility Following subsection describes the CCM registers Chip Configuration Register CCRSzen BMT Bootps Reset Configuration Register RconRcsc Rpllsel Rpllref Rcsc Bootps Port Size Configuration Rcsc Chip Select ConfigurationChip Select Configuration Boot Port Size PIN PRN Reset ConfigurationChip Identification Register CIR 10. Configuration During Reset Reset Configuration Pin States During Reset D2524 Chip Mode SelectionClock Mode Output Pad Strength Configuration Boot Device SelectionClock Mode Selection 11. Chip Configuration Mode Selection CCM does not generate interrupt requests Chip Select Configuration13. Clock Mode Selection Chapter Ieee 1149.1 Test Access Port Jtag Jtag Block Diagram 31.3.1 Detailed Signal Description External Signal DescriptionJtagen Jtag Enable Pin Function Selected TRST/DSCLK Test Reset / Development Serial Clock 31.3.1.3 TMS/BKPT Test Mode Select / BreakpointSignal State to the Disable Module Tclk Test Clock Input Memory Map Memory Map/Register DefinitionInstruction Shift Register IR Idcode Register Jtagcfmclkdiv Register Bypass RegisterTestctrl Register Boundary Scan Register TAP Controller Jtag Module 5describes public and private instructions Jtag InstructionsJtag Instructions Instruction IR30 Instruction Summary SAMPLE/PRELOAD Instruction External Test Instruction ExtestIdcode Instruction Lockoutrecovery Instruction Enabletestctrl InstructionTestleakage Instruction Highz Instruction Restrictions Initialization/Application InformationClamp Instruction Bypass Instruction Nonscan Chain Operation Chapter Mechanical Data MCF5282 Pinout 256 Mapbga Pinout Secondary Tertiary MCF5282 Signal Description by Pin NumberMapbga Pin Pin Functions PG3 PG4PG2 PF4 GPTB0 PUA1 VDDGPTA0 PQA3 ETRIG1 VRH VDD Vssa VSS PUA3 VSS Xtal Jtagen PQA0 MA0 VDD VddaGPTB2 PQS5 Orderable Part Numbers Motorola Part Description Speed TemperatureOrdering Information 32-8 Absolute Maximum Ratings1 Rating Symbol Value UnitMaximum Ratings HBM Rating Symbol Thermal Characteristics Thermal CharacteristicsCharacteristic Symbol Value Unit 2lists thermal resistance values DC Electrical Specifications1 DC Electrical SpecificationsCharacteristic Symbol Min Max Unit Solving equations 1 and 2 for K gives Wait Doze Stop PLL Electrical Specifications Phase Lock Loop Electrical Specifications Qadc Electrical Specifications Operating Qadc Electrical CharacteristicsParameter Symbol Min Max Unit Qadc Absolute Maximum Ratings IOH = TBD Parameter Symbol Min Qadc Conversion Specifications Operating Flash Memory CharacteristicsSgfm Flash Program and Erase Characteristics Num Parameter Symbol Min Max Unit 10. Processor Bus Input Timing Specifications External Interface Timing CharacteristicsSgfm Flash Module Life Characteristics 11. External Bus Output Timing Specifications Processor Bus Output Timing SpecificationsName Characteristic Symbol Min Max Unit Control Outputs Timings listed in -10are shown in Figure Data Outputs Read/Write Internally Terminated Timing Read Bus Cycle Terminated by TA Read Bus Cycle Terminated by TEA Sras Scas Dramw Symbol Min Max Unit Sras SCAS1 Dramw 33.9 General Purpose I/O Timing13. Gpio Timing1 14. Reset and Configuration Override Timing Reset and Configuration Override Timing 15. I2C Input Timing Specifications between SCL and SDA 33.11 I2C Input/Output Timing SpecificationsNum Characteristic Min Max Units Clkout Rsti Rsto 16. I2C Output Timing Specifications between SCL and SDA Fast Ethernet AC Timing Specifications MII Transmit Signal Timing ETXD30, ETXEN, ETXER, Etxclk MII Receive Signal Timing ERXD30, ERXDV, ERXER, and Erxclk17. MII Receive Signal Timing Num Characteristic Min Max Unit 19lists MII asynchronous inputs signal timing MII Async Inputs Signal Timing Ecrs and Ecol18. MII Transmit Signal Timing 19. MII Async Inputs Signal Timing 20. MII Serial Management Channel Timing MII Serial Management Channel Timing Emdio and Emdc Qspi Electrical Specifications DMA Timer Module AC Timing Specifications21lists timer module AC timings 22lists Qspi timings 23. Jtag and Boundary Scan Timing Jtag and Boundary Scan Timing 16. Boundary Scan Jtag Timing 17. Test Access Port Timing Clkout VIL Debug AC Timing Specifications24. Debug AC Timing Specification 20. Real-Time Trace AC Timing 20shows real-time trace timing for the values in Table Address Name Mnemonic Size Table A-1. CPU Space Register Memory MapACR0 ACR1 Address Module Size Table A-2. Module Memory Map OverviewI2C Qadc Address Name Mnemonic Size SCM Registers Table A-3. Register Memory MapSdramc Registers Chip Select Registers DMA Registers Uart Registers UIMR1 UISR1UBG21 UIP01 Qspi Registers DMA Timer RegistersI2C Registers Interrupt Controller Ipsbar + 0xC56 IPRH1 SWACKR0IPRL1 IMRH1 FEC Registers Global Interrupt Acknowledge Cycle Registers Gpio Registers Portqs PortasPortsd Porttc Seta Ipsbar + PortapPortbp Setb Ipsbar + Clrf ClraClrg Clras Edge Port Registers Clock Module Registers Watchdog Timer Registers Qadc Registers General Purpose Timer a Registers General 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