Arbitration Procedure, Repeated Start | Motorola MCF5282, MCF5281

I2C Protocol

The slave whose address matches that sent by the master pulls SDA low at the ninth serial clock (D) to return an acknowledge bit.

3.Data transfer—When successful slave addressing is achieved, the data transfer can proceed (E) on a byte-by-byte basis in the direction specified by the R/W bit sent by the calling master.

Data can be changed only while SCL is low and must be held stable while SCL is high, as Figure 24-2shows. SCL is pulsed once for each data bit, with the msb being sent first. The receiving device must acknowledge each byte by pulling SDA low at the ninth clock; therefore, a data byte transfer takes nine clock pulses.

If it does not acknowledge the master, the slave receiver must leave SDA high. The master can then generate a STOP signal to abort the data transfer or generate a START signal (repeated start, shown in Figure 24-3) to start a new calling sequence.

If the master receiver does not acknowledge the slave transmitter after a byte transmission, it means end-of-data to the slave. The slave releases SDA for the master to generate a STOP or START signal.

4.STOP signal—The master can terminate communication by generating a STOP signal to free the bus. A STOP signal is defined as a low-to-high transition of SDA while SCL is at logical high (F). Note that a master can generate a STOP even if the slave has made an acknowledgment, at which point the slave must release the bus.

Instead of signaling a STOP, the master can repeat the START signal, followed by a calling command, (A in Figure 24-3). A repeated START occurs when a START signal is generated without first generating a STOP signal to end the communication.

msb

lsb

msb

lsb

SCL

SDA

AD7 AD6 AD5 AD4 AD3 AD2 AD1 R/W

Calling Address

New Calling Address

START

R/W ACK

Repeated

R/W

STOP

Signal

Bit

START

ACK

Signal

Stop

Bit

Figure 24-3. Repeated START

The master uses a repeated START to communicate with another slave or with the same slave in a different mode (transmit/receive mode) without releasing the bus.

24.4.1 Arbitration Procedure

If multiple devices simultaneously request the bus, the bus clock is determined by a synchronization procedure in which the low period equals the longest clock-low period among the devices and the high period equals the shortest. A data arbitration procedure

24-4

MCF5282 User’s Manual

MOTOROLA

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Motorola MCF5282, MCF5281 user manual Arbitration Procedure, Repeated Start

Contents

MCF5282 ColdFire Microcontroller User’s Manual HOW to Reach US USA/EUROPE/LOCATIONS not Listed IND IND Contents Chapter Enhanced Multiply-Accumulate Unit Emac Timing Assumptions Move Instruction Execution Times Chapter Static RAM Sram Chapter CacheColdFire Flash Module CFM Chapter Power Management Chapter System Control Module SCM Clock Module Interrupt Controller Modules Chapter Chip Select Module Signal DescriptionsChapter Edge Port Module Eport Chapter External Interface Module EIM Chapter Synchronous Dram Controller Module Chapter DMA Controller Module Chapter Fast Ethernet Controller FEC Chapter Programmable Interrupt Timer Modules PIT0-PIT3 Chapter Watchdog Timer ModuleChapter General Purpose Timer Modules Gpta and Gptb 20.3 Chapter DMA Timers DTIM0-DTIM3 Chapter Queued Serial Peripheral Interface Qspi Module Chapter Uart Modules Chapter I2C Interface Chapter FlexCAN Chapter General Purpose I/O Module Chapter Queued Analog-to-Digital Converter Qadc 27.4.7 Reset Controller Module Chapter Debug Support Chapter Chip Configuration Module CCM Chapter Ieee 1149.1 Test Access Port Jtag Appendix a Register Memory Map Electrical CharacteristicsChapter Mechanical Data Paragraph Title Number 31.6.2 Nonscan Chain Operation 31-12 Illustrations Title Number 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 Audience Organization Organization Xlv General Information Suggested ReadingColdFire Documentation Conventions Table i. Acronyms and Abbreviated Terms Acronyms and AbbreviationsMeaning Operand Syntax Terminology ConventionsTable ii. Notational Conventions Opcode Wildcard Port Name ACCCCR PST LSW MSW Table iii. Revision History Revision HistoryTable iii provides a revision history for this document SST Number Release Revision Date Substantive ChangesFrsr Liv 10.3.6/10-11 RAMBAR.’ Revision Number Substantive Changes Section/Page MCF5282 Key Features Chapter Overview MCF5282 Key Features MCF5282 Key Features MCF5282 Key Features MCF5282 Key Features MCF5282 Key Features MCF5282 Block Diagram Version 2 ColdFire Core Cache ConfigurationConfiguration Tag Address Data Array Address Cache Flash SramDebug Module System Control Module External Interface Module EIM General Input/Output Ports Power ManagementChip Select Interrupt Controllers INTC0/INTC1 Test Access Port Uart Modules General-Purpose Timers GPTA/GPTB DMA Timers DTIM0-DTIM3Periodic Interrupt Timers PIT0-PIT3 Reset Software Watchdog TimerPhase Locked Loop PLL DMA Controller MCF5282-Specific Features MCF5282-Specific Features Fifo Processor PipelinesIAG Dsoc Processor Register Description User Programming Model Stack Pointer A7 Data Registers D0-D7Address Registers A0-A6 Program Counter PC Condition Code Register CCR Bits Name Description Emac Programming Model Supervisor Programming Model System Byte Condition Code Register CCR Status Register SRBits Supervisor/User Stack Pointers A7 and OTHERA7 Vector Base Register VBR Access Control Registers ACR0, ACR1Programming Model Cache Control Register Cacr Name CPU Space Rc Written with Register Name Additions to the Instruction Set ArchitectureLocal Memory Registers ISA Revision A+ New Instructions Exception Processing OverviewInstruction Description Exception Vector Assignments Vector Stacked Program Assignment NumberS Offset Hex Counter Format Field Encodings Exception Stack Frame Definition0x100-0x3FC Next Processor Exceptions Access Error ExceptionFault Status Encodings FS30 Definition Divide-By-Zero Address Error ExceptionIllegal Instruction Exception Privilege Violation Unimplemented Line-F Opcode Unimplemented Line-A OpcodeDebug Interrupt Reset Exception RTE and Format Error ExceptionFault-on-Fault Halt Trap Instruction Exception VER REV MAC DIV Emac FPU MMU ISA Debug VER D0 Hardware Configuration Info Field DescriptionMAC Busw DCA Dcsiz RAM1SIZ ROM1SIZ ICA Icsiz RAM0SIZ ROM0SIZICA 16KB RAM 4KB RAM8KB RAM 32KB RAM Instruction Execution Timing Timing Assumptions 10. Misaligned Operand References Move Instruction Execution TimesAddress10 Size Kbus Additional Operations CR/W 12. Move Long Execution Times 11. Move Byte and Word Execution TimesSource Destination Ax+ D16,Ax D8,Ax,Xi Xxx.wl 13. One Operand Instruction Execution Times Standard One Operand Instruction Execution TimesStandard Two Operand Instruction Execution Times 14. Two Operand Instruction Execution Times Standard Two Operand Instruction Execution Times Effective Address Opcode An+ D16,An D8,An,Xn*SF Xxx.wl Miscellaneous Instruction Execution Times15. Miscellaneous Instruction Execution Times D16,PC D8,PC,Xn*SF 16. Emac Instruction Execution Times Emac Instruction Execution TimesEffective Address Opcode An+ D16,An D8,An,X Xxx.wl #xxx 17. General Branch Instruction Execution Times Branch Instruction Execution TimesColdFire Instruction Set Architecture Enhancements 18. BRA, Bcc Instruction Execution Times Attributes OperationAssembler Syntax Instruction Format Assembler Syntax BYTEREV.L Dx Attributes Byte Reverse Register ByterevCondition Codes Find First One in Register Old Dx310 New Dx310 Supported Starting with ISA A+ Store/Load Status Register StrldsrAssembler SyntaxSTRLDSR #data Chapter Enhanced Multiply-Accumulate Unit Emac Multiply-Accumulate Unit Multiply-Accumulate Functionality Diagram Introduction to the MAC General Operation Infinite Impulse Response IIR Filter Fractional Alignment Motorola MAC Status Register Macsr Memory Map/Register Set1describes Macsr fields Macsr Field Descriptions Summary of S/U, F/I, and R/T Control Bits Fractional Operation ModeRounding Operational Modes Saving and Restoring the Emac Programming Model Mask Register Mask Following code performs the Emac state restoreMULS/MULU MAC.sz Ry,RxSF,eay&,Rw Emac Instruction Execution Times Command Mnemonic DescriptionEmac Instruction Set Summary 3summarizes Emac unit instructions Mac Mov Data RepresentationAccumulator Mac Old Mov New MAC Opcodes Two’s Complement, Signed Fractional Equation MACSR.V = Emac Instruction Set Summary MACSR.Z = Emac Instruction Set Summary Motorola Emac Instruction Set Summary MCF5282 User’s Manual Cache Physical Organization Cache FeaturesThis chapter describes the MCF5282 cache operation Cache Physical Organization Cache Operation Interaction with Other Modules Memory Reference Attributes Cache Coherency and Invalidation Initial Fetch Offset vs. Clnf Bits Cache Miss Fetch Algorithm/Line FillsCLNF10 Longword Address Bits Instruction Cache Operation as Defined by CACR31 CACR31 CACR10 Type of Instruction Fetch Description Cache Registers Cache Programming ModelCache Registers Memory Map Cache Control Register Cacr Ceib DCM Dbwe DWP Eusp Clnf Cenb CPDCinv Didi Disd Invi Invd Cenb Ceib CACR23 CACR22 CACR21 CACR20 Configuration Operation Cache Configuration as Defined by CACR31, 23CACR31 CACR23 CACR22 Configuration Description Cache Invalidate All as Defined by CACR23, 22, 21 External Fetch Size Based on Miss Address and Clnf Access Control Registers ACR0, ACR1Bufw BWE Between the processors local bus and the external bus Sram Operation Sram FeaturesSram Programming Model PRI1, PRI2 Sram Base Address Register RambarPRI1 PRI2 SPV PRI12 Upper Bank Lower Bank Priority Sram Initialization Sram Base Address Register Sram Initialization Code Power ManagementTypical Rambar Setting Examples Following loop initializes the entire Sram to zero Sram Programming Model Sram Programming Model MCF5282 User’s Manual Features Chapter ColdFire Flash Module CFM Block Diagram CFM Block Diagram Memory Map CFM Array Memory Map Flash Base Address Register Flashbar CFM Configuration FieldCFM Configuration Field Address Offset from array base Size Description Memory Map BA30 BA29 Register Descriptions CFM Configuration Register CfmcrCFM Registers Flash registers are described in this subsection Bits Name Description CFM Clock Divider Register CfmclkdCfmcr Field Descriptions Divld PRDIV8 CFM Security Register Cfmsec Cfmclkd Field Descriptions Cfmsec Field Descriptions SEC150 Description Cfmprot Field Descriptions CFM Protection Register CfmprotProt PROTECT2 CFM Supervisor Access Register CfmsaccPROTECT31 Sector Cfmsacc Field Descriptions CFM Data Access Register CfmdaccData 10. Cfmustat Field Descriptions CFM User Status Register CfmustatOnly one Cfmustat bit should be cleared at a time Cbeif Ccif Pviol Accerr Blank 12. Cfmcmd User Mode Commands CFM Command Register CfmcmdCommand Name Description Write Operations CFM OperationRead Operations Program and Erase Operations Thus the Flash state machine clock will be Setting the Cfmclkd RegisterConsider the following example for fSYS = 66 MHz Program, Erase, and Verify Sequences 13. Flash User Commands Flash Valid Commands13summarizes the valid Flash user commands Meaning Description 13. Example Program Algorithm Stop Mode Flash User Mode Illegal Operations Master Mode Flash Security Operation Back Door Access ResetErase Verify Check 14. CFM Interrupt Sources Interrupt Source Interrupt Flag Local EnableInterrupts Cbeif Cbeie Interrupts MCF5282 User’s Manual Memory Map and Registers Programming Model Memory Map Low-Power Interrupt Control Register LpicrChip Configuration Module Memory Map Following subsection describes the PMM registers Lpicr Field Description Enbstop Xlpmipl Interrupts Level Needed to Exit Low-Power Mode Low-Power Control Register LpcrXlpmipl Settings Lpmd Stpmd Lvdse PLL/CLKOUT Stop Mode Operation Low-Power ModesLow-Power Modes Functional Description Doze Mode Run ModeWait Mode Stop Mode Peripheral Shut Down Peripheral Behavior in Low-Power ModesStatic Random-Access Memory Sram ColdFire Core DMA Controller DMAC0-DMA3 Sdram Controller SdramcChip Select Module Uart Modules UART0, UART1, and UART2 2.9 I2C Module DMA Timers DMAT0-DMAT3Queued Serial Peripheral Interface Qspi Fast Ethernet Controller FEC Reset ControllerInterrupt Controllers INTC0, INTC1 2.14 I/O Ports Chip Configuration Module Clock Module Edge Port Watchdog TimerProgrammable Interrupt Timers PIT0, PIT1, PIT2 and PIT3 Queued Analog-to-Digital Converter Qadc General Purpose Timers Gpta and Gptb FlexCAN Functional Description ColdFire Flash Module 2.25 BDM Summary of Peripheral State During Low-Power ModesCPU and Peripherals in Low-Power Modes Jtag BDM QadcJtag Functional Description MCF5282 User’s Manual Features Overview SCM Register Map Memory Map and Register Definition3124 2316 158 Internal Peripheral System Base Address Register Ipsbar Register DescriptionsCache Memory Base Address Register Rambar Ipsbar Field Description Memory Base Address Register Rambar Rambar Field Description BDE Core Watchdog Control Register Cwcr Core Reset Status Register CrsrCrsr Field Descriptions Register Descriptions Core Watchdog Timer Delay CWT CWT Time-Out Period Core Watchdog Service Register Cwsr Internal Bus Arbitration Marb SRAM1 Mpark Rambar CPU DMA EIMFEC Sdramc Overview Round-Robin ModeArbitration Algorithms Bus Master Park Register Mpark Fixed ModeFixed Timeout Prklast Lckouttime M2PEN BCR24BIT M3PRTY M2PRTY M0PRTY M1PRTY Mpark Field Description System Access Control Unit Sacu Features 3128 2724 2320 1916 1512 118 Memory Map/Register DefinitionSacu Register Memory Map PACR1 PACR2 PACR3 Master Privilege Register MPR Peripheral Access Control Registers Pacr 0-PACR8PACR6 Bits Supervisor Mode User Mode 12. Peripheral Access Control Registers PACRsIpsbar Offset Name Modules Controlled DTIM0 DTIM1 UART2Qspi DTIM2 DTIM3 14. Gpacr Accessctrl Bit Encodings 13. Grouped PeripheralAccess Control RegisterGpacr Field Descriptions GPACR0 15. Gpacr Address SpaceRegister Space Protected Modules Protected Ipsbar Offset EPORT, WDOG, PIT0-PIT3, QADC, GPTA, Gptb Normal PLL Mode Modes of Operation External Clock Mode Low-power Mode Operation2 11 PLL Mode Clock Module Operation in Low-power Modes Block Diagram Clock Module Block Diagram Extal Signal DescriptionsSignal Properties Name Function Memory Map and Registers Lolre MFD2 MFD1 MFD0 Locre Register DescriptionsSynthesizer Control Register Syncr Locen Disclk Fwkup STPMD1 STPMD0 MFD20 MFDRFD OSC Synthesizer Status Register SynsrStpmd Pllmode Synsr Field Descriptions Locks System Clock Modes Clock ModeFunctional Description System Clock Modes System Clock Generation Clock Operation During ResetSystem Clock Mode PLL Options Clock Out and Clock In Relationships Phase and Frequency Detector PFD PLL Operation Voltage Control Output VCO Charge Pump Current and MFD in Normal Mode OperationCharge Pump/Loop Filter Multiplication Factor Divider MFD PLL Lock Detection PLL Loss of Lock Reset PLL Loss of Lock Conditions Alternate Clock Selection Loss of Clock ResetLoss of Clock Detection Loss of Clock Summary Loss of Clock in Stop Mode 10. Stop Mode Operation Sheet 1 Expected PLL Action 10. Stop Mode Operation Sheet 2Stop NRM ‘LC ‘LK 10. Stop Mode Operation Sheet 3‘LC NRM ‘LK 10. Stop Mode Operation Sheet 4 PLL Clock 10. Stop Mode Operation Sheet 5Lose reference Modes Functional Description MCF5282 User’s Manual Chapter Interrupt Controller Modules 10.1 68K/ColdFire Interrupt Architecture Overview 68K/ColdFire Interrupt Architecture Overview Interrupt Prioritization Interrupt Controller Theory of OperationInterrupt Recognition Interrupt Priority Within a Level Interrupt Vector Determination Interrupt Controller Memory Map Memory MapInterrupt Controller Base Addresses Interrupt Controller Number Base Address Interrupt Pending Registers IPRHn, IPRLn INT Intmask Interrupt Mask Register IMRHn, IMRLnMaskall IMRLn Field Descriptions Interrupt Force Registers INTFRCHn, INTFRCLnIntfrc Interrupt Request Level Register IRLRn IRQ 11. IACKLPRn Field Descriptions Interrupt Acknowledge Level and Priority Register IACKLPRnInterrupt Control Register ICRnx, x = 1, 2 Level PRI 12. ICRnx Field Descriptions Interrupt Sources13. Interrupt Source Assignment for INTC0 DTIM1 CAP/REF IIFDTIM0 CAP/REF DTIM2 CAP/REF PIT1 PIF Gptb TOFPIT0 PIF PIT2 PIF Software and Level n Iack Registers SWIACKR, L1IACK-L7IACK 14. Interrupt Source Assignment for INTC1 Prioritization Between Interrupt Controllers Vector Low-Power Wakeup Operation 10-18 Introduction Low-Power Mode OperationIpbus Low-power Mode Eport Operation Mode Exit Edge Port Module Operation in Low-power ModesInterrupt/General-Purpose I/O Pin Descriptions Registers Bits AccessEdge Port Module Memory Map EPPA7 Eport Pin Assignment Register EpparEport Data Direction Register Epddr EPPA5 EPPA4 EPPA3 EPPA2 EPPA1 Edge Port Data Register Epdr Edge Port Interrupt Enable Register EpierEpdd Field Descriptions Edge Port Flag Register Epfr Edge Port Pin Data Register EppdrEpdr Field Descriptions Epfr Field Descriptions EPF7-EPF1 11-8 Chip Select Module Signals Chip Select Module Signals1lists signals used by the chip select module Signal Description Transfer Size Port Size Byte Enables/Byte Write Enable Signal SettingsD3124 D2316 D158 D70 Chip Select Operation General Chip Select Operation 12.3.1.1 8-, 16-, and 32-Bit Port Sizing External Boot Chip Select OperationAccesses by Matches in CSARs and DACRs BS2 BS1 BS0 Chip Select Registers D1918 External Boot Chip Select ConfigurationD1918 Boot Device/Data Port Size Chip Select Registers CSARs, -2,specify the chip select base addresses Chip Select Module RegistersChip Select Address Registers CSAR0-CSAR6 6describes Csarba CSARn Field Description Chip Select Mask Registers CSMR0-CSMR67describes Csmr fields Csmr n Field Descriptions SD,UC Chip Select Control Registers CSCR0-CSCR68describes CSCRn fields PS1 PS0 BEM Bstr Bstw CSCRn Field Descriptions No internal TA is asserted. Cycle is terminated externally 12-10 ColdFire Bus Signal Summary Bus and Control SignalsSignal Name Description Clkout Edge Data Transfer Operation Bus CharacteristicsTIP Chip-Select Module Output Timing Diagram Bus Cycle Execution Accesses by Matches in CSCRs and DACRs Bus Cycle States Data Transfer Cycle StatesState Cycle Read Cycle MCF5282 System Write Cycle Write cycle timing diagram is shown in Figure3describes the six states of a basic write cycle Fast Termination Cycles Read Cycle with Fast Termination Back-to-Back Bus Cycles Burst Cycles Line Transfers Allowable Line Access PatternsA32 Longword Accesses Line Read Bus Cycles 13shows timing when internal termination is used Line Write Bus Cycles 16. Line Write Burst 2-1-1-1, Internal/External Termination Misaligned Operands 17shows a line burst write with one wait-state insertion 19. Example of a Misaligned Longword Transfer 32-Bit Port 13-16 Chapter Signal Descriptions MCF5282 Block Diagram with Signal Interfaces Signal Name Abbreviation Function External Memory Interface MCF5282 Signal DescriptionSdram Controller Signals Chip Configuration Module Signal Name Abbreviation FunctionClock and Reset Signals External Interrupt Signals 2C Signals Queued Serial Peripheral Interface Qspi SignalsFlexCAN Signals Uart Signals Analog-to-Digital Converter Qadc Signals General Purpose Timer SignalsDMA Timer Signals Debug Support Signals Test Signals 2lists signals in alphabetical order by abbreviated namePower and Reference Signals MCF5282 Alphabetical Signal Index Abbreviation Function Vddpll TCK Secondary MCF5282 Signals and Pin Numbers Sorted by FunctionChip Configuration/Mode Selection External Memory Interface and Ports External Interrupts Port Chip SelectsSdram Controller Ethernet FlexCAN General Purpose Timers UARTs Queued Analog-to-Digital Converter Qadc DMA TimersDebug and Jtag Test Port Control Power Supplies Single-Chip ModeTest Pin Reset States at Reset Single-Chip Mode External Boot ModeListing of signals that do not default to a Gpio function Signal Reset Clock and Reset Signals Address Bus A230 14.2 MCF5282 External SignalsExternal Interface Module EIM Signals Data Bus D310 Transfer Acknowledge TA Output Enable OETransfer Error Acknowledge TEA Read/Write R/W Chip Selects CS60 Transfer Start TSTransfer In Progress TIP Transfer Size Encoding Sdram Controller Signals Clock and Reset Signals Chip Configuration Signals External Interrupt Signals Ethernet Module Signals Receive Clock Erxclk Transmit Error EtxerCollision Ecol Receive Data Valid Erxdv Queued Serial Peripheral Interface Qspi Signals 14.2.9 I2C Signals FlexCAN SignalsUart Module Signals General Purpose Timer Signals DMA Timer Signals Analog-to-Digital Converter Signals Debug Support Signals Development Serial Output/Test Data DSO/TDO Breakpoint/Test Mode Select BKPT/TMSDevelopment Serial Input/Test Data DSI/TDI Test Clock Tclk Processor Status Outputs PST30 Test SignalsDebug Data DDATA30 Test Test Power and Reference Signals 14-34 Overview Definitions DACR1 Block Diagram and Major ComponentsDACR0 Scas Sras Scke SDRAMCS10 Dramw Command Definition Sdram CommandsSdram Controller Operation Memory Map for Sdramc Registers Dram Controller Signals2describes the behavior of Dram signals in synchronous mode Dram controller registers memory map is shown in Table 4describes DCR fields Dram Control Register DCRDCR, shown in -2,controls refresh logic DCR Field Descriptions DACRn Field Descriptions Dram Address and Control Registers DACR0/DACR15describes DACRn fields Bit 15-7 6describes DMRn fields Bit Associated Access Type Access DefinitionDram Controller Mask Registers DMR0/DMR1 DMRn Field Descriptions Generic Address Multiplexing Scheme General Synchronous Operation GuidelinesAddress Multiplexing Address Pin Row Address Column Address Pins Pins Row ColumnMCF5282 Row Column 15-12 Sdram Byte Strobe Connections Burst Page ModePins MCF5282 Interfacing Example Burst Read Sdram Access Burst Write Sdram Access Auto-Refresh Operation Self-Refresh Operation Auto-Refresh Operation Initialization Sequence Self-Refresh Operation Mode Register Settings Sdram Example 25. Sdram Example SpecificationsParameter Specification Clkout Dacr Initialization Sdram Interface ConfigurationDCR Initialization 26. Sdram Hardware Connections 28. Dacr Initialization Values Bits Name Setting DescriptionDACRs should be programmed as shown in Figure Casl CBM Imrs DMR Initialization 29. DMR0 Initialization Values 31. Mode Register Mapping to MCF5282 A310 Mode Register Initialization30. Mode Register Initialization MCF5282 Pins Sdram Pins Mode Register Initialization Precharge Sequence Mode Register Initialization SequenceInitialization Code Refresh Sequence 15-25 15-26 Chapter DMA Controller Module DMA Module Features Channel 0 Channel 1 Channel 2 Channel DMA Request Control Dmareqc DMA Transfer Overview DMA DMA Controller Module Programming Model Memory Map for DMA Controller Module Registers SAR Source Address Registers SAR0-SAR3Destination Address Registers DAR0-DAR3 DAR Byte Count Registers BCR0-BCR3 BCR DCRn Field Descriptions DMA Control Registers DCR0-DCR33describes DCRn fields BWC Sinc Ssize Dinc Dsize Start BWC Encoding BCR24BIT = 4describes DSRn fields DMA Status Registers DSR0-DSR3DSR n Field Descriptions BSY DMA Controller Module Functional DescriptionTransfer Requests Cycle-Steal and Continuous Modes Done Data Transfer Modes Dual-Address Transfers Channel Prioritization Channel Initialization and StartupProgramming the DMA Controller Module Data Transfer Auto-Alignment Termination Bandwidth Control 16-16 Chapter Fast Ethernet Controller FEC 17.2.2.1 10 Mbps and 100 Mbps MII Interface Full and Half Duplex OperationInterface Options Primary operational modes are described in this section Address Recognition Options 17.2.2.2 10 Mpbs 7-Wire Interface OperationInternal Loopback FEC Top-Level Functional Diagram PAD 17-5 Hardware Controlled Initialization Initialization SequenceUser Initialization Prior to Asserting Ecretheren Ecretheren De-Assertion Effect on FEC FEC User Initialization Before Ecretheren Microcontroller InitializationUser Initialization After Asserting Ecretheren Microcontroller Initialization Signal Description Emac pin MII ModeWire Mode Configuration Network Interface Options FEC Frame Transmission FEC Frame Reception Ethernet Address Recognition Ethernet Address Recognition-Receive Block Decisions Hash Algorithm Ethernet Address Recognitionq-Microcode Decisions Destination Address to 6-Bit Hash Bit DA Bit Hash Hash Decimal Hex Value 17-15 Pause Frame Field Specification Full Duplex Flow Control Collision Handling Inter-Packet Gap IPG TimeInternal and External Loopback Ethernet Error-Handling Procedure Transmission Errors Reception Errors Heartbeat Module Memory Map Top Level Module Memory MapDetailed Memory Map Control/Status Registers 10. FEC Register Memory Map MIB Block Counters Memory Map 11. MIB Counters Memory Map Mnemonic Description Offset Ethernet Interrupt Event Register EIR RegistersFollowing sections describe each register in detail Hberr Ieeetsqe Babr Babt GRA TXF TXB RXF RXB MII Eberr 17-25 Receive Descriptor Active Register Rdar Interrupt Mask Register EimrBabr Babt GRA TXF TXB RXF RXB MII Transmit Descriptor Active Register Tdar Rdesactive Ethernet Control Register ECR Etheren ResetXdesactive 16. ECR Field Descriptions MII Management Frame Register MmfrData 17. Mmfr Field Descriptions Bit Name Description Dispreamble Miispeed MII Speed Control Register MscrDispreamble MIB Control Register Mibc Mibdisable MibidleMibdisable 19. Programming Examples for Mscr FCE Bcrej Prom Miimode DRT Loop Receive Control Register RCRMaxfl FCE Tfcpause Fden Transmit Control Register TCRGTS 22. TCR Field Descriptions Physical Address Low Register PalrTfcpause PADDR2 Physical Address High Register PaurPADDR1 Type 24. Paur Field Descriptions Opcode/Pause Duration Register OPDDescriptor Individual Upper Address Register Iaur Opcode Bits Name Descriptions Descriptor Individual Lower Address IalrIADDR1 IADDR2 27. Ialr Field Descriptions Descriptor Group Upper Address GaurDescriptor Group Lower Address Galr GADDR1 GADDR2 Fifo Transmit Fifo Watermark Register TfwrXwmrk 30. Tfwr Field Descriptions Fifo Receive Bound Register FrbrRbound Receive Descriptor Ring Start Erdsr Fifo Receive Start Register FrsrRfstart Rdesstart Transmit Buffer Descriptor Ring Start EtsdrXdesstart 34. Etdsr Field Descriptions Receive Buffer Size Register EmrbrRbufsize Driver/DMA Operation with Buffer Descriptors Buffer DescriptorsDriver/DMA Operation with Transmit BDs Driver/DMA Operation with Receive BDs Ethernet Receive Buffer Descriptor RxBD RO1 RO2 RO1 36. Receive Buffer Descriptor Field DefinitionsWord Location Field Name Description Erdsr Ethernet Transmit Buffer Descriptor TxBD TO1 TO2 ABC TO1 17-51 17-52 Watchdog Module Operation in Low-power Modes Low-power Mode Watchdog Operation Mode Exit Watchdog timer module has no off-chip signals SignalsRefer to -2for an overview of the watchdog memory map Watchdog Timer Module Memory Map 16-bit WCR configures watchdog timer operationWatchdog Control Register WCR Watchdog Modulus Register WMR WCR Field Descriptions WMR Field Descriptions Watchdog Service Register WSRWatchdog Count Register Wcntr WC9 WC8 WS9 WS8 WS7 WS6 WS5 WS4 WS3 WS2 WS1 WS0 Chapter Programmable Interrupt Timer Modules PIT0-PIT3 PIT Module Operation in Low-power Modes PIT module has no off-chip signalsLow-power Mode PIT Operation Mode Exit Programmable Interrupt Timer Modules Memory Map Ipsbar Offset Access For PITx Bits Address Doze Halted OVW PIE PIF RLD PIT Control and Status Register PcsrPRE3 PRE2 PRE1 PRE0 PRE PIT Modulus Register PMR PIF PIT Count Register Pcntr Set-and-Forget Timer OperationThis subsection describes the PIT functional operation System clock Free-Running Timer OperationTimeout Specifications PIT Clock Counter 4shows the interrupt request generated by the PIT Interrupt Request Flag Enable Bit TimeoutInterrupt Operation PIT Interrupt Requests Chapter General Purpose Timer Modules Gpta and Gptb GPT Block Diagram GPTn20 Signal DescriptionFunction Reset State Pull-up Name Register Bit Pin SYNCn Ipsbar Offset Bits AccessGPTn3 GPT Modules Memory Map GPT Input Capture/Output Compare Select Register Gptios IOS Gptios Field Descriptions GPT Compare Force Register GpcforcGPT Output Compare 3 Mask Register GPTOC3M FOC GPTOC3M Field Descriptions GPT Output Compare 3 Data Register GPTOC3DGPT Counter Register Gptcnt OC3D Gpten Tffca GPT System Control Register 1 GPTSCR1Gptcnt Field Descriptions Gpten TOV GPT Toggle-On-Overflow Register GpttovGPT Control Register 1 GPTCTL1 OM3 OL3 OM2 11. GPTCL1 Field Descriptions GPT Interrupt Enable Register GptieGPT Control Register 2 GPTCTL2 EDG3B EDG3A EDG2B EDG2A GPT System Control Register 2 GPTSCR2 13. Gptie Field Descriptions GPT Flag Register 1 GPTFLG1 GPT Flag Register 2 GPTFLG2 Ccnt GPT Channel Registers GPTCnPulse Accumulator Control Register Gptpactl PAE Pamod Pedge CLK Paovi PAI Paclk Pulse Accumulator Flag Register GptpaflgPaovf Paif 19. Gptpaflg Field Descriptions Pulse Accumulator Counter Register GptpacntPacnt 22. Gptddr Field Descriptions GPT Port Data Register GptportGPT Port Data Direction Register Gptddr Portt Input Capture PrescalerOutput Compare Event Counter Mode Pulse Accumulator Pulse Accumulator Gated Time Accumulation ModeGeneral-Purpose I/O Ports OM3 OL3 EDGx OMx OC3Mx Pin Data Driven Comments 23. GPT Settings and Pin FunctionsDir Function Interrupt Request Flag Enable Bit Reset24lists the interrupt requests generated by the timer Interrupts Pulse Accumulator Overflow Paovf Timer Overflow TOFGPT Channel Interrupts CnF Pulse Accumulator Input Paif 20-23 20-24 Chapter DMA Timers DTIM0-DTIM3 Key Features DMA Timer Programming ModelPrescaler DMA Timer Module Memory Map Capture ModeOutput Mode Reference Compare DMA Timer Mode Registers DTMRn Orri FRR CLK RST DTMRn Field Descriptions DMA Timer Extended Mode Registers DTXMRn2describes the DTMRn fields DTXMR3 3describes the DTXMRn fields DMA Timer Event Registers DTERnDTXMRn Field Descriptions 4describes the DTERn fields DMA Timer Reference Registers DTRRnDMA Timer Capture Registers DTCRn DTERn Field Descriptions Using the DMA Timer Modules DMA Timer Counters DTCNn Code Example Calculating Time-Out Values T0LOOP Chapter Queued Serial Peripheral Interface Qspi Module Module Description Qspi RAM Interface and SignalsQspiclk Operation Qspi Input and Output Signals and FunctionsSignal Name Hi-Z or Actively Driven Function Internal Bus Interface Qspi RAM 0x01 Receive RAMRelative Address Register 0x00 0x0F Baud Rate Selection Command RAMTransmit RAM System Clock Transfer DelaysQspiclk Frequency as Function of System Clock and Baud Rate 66.67 MHz Transfer Length Programming Model Qspi Registers QMR Field Descriptions Qspi Mode Register QMR4gives QMR field descriptions Value Bits per transfer Qmrcpha = = Qdlyrqcd Qcrcont = = Qdlyrdtl Qspi Delay Register QdlyrQspics Qmrcpol = QCD 6gives QWR field descriptions Qspi Wrap Register QWR5gives Qdlyr field descriptions Qdlyr Field Descriptions 7describes QIR fields Qspi Interrupt Register QIRQIR Field Descriptions Qspi Data Register QDR Qspi Address Register QARAddr 8gives QCR field descriptions Command RAM Registers QCR0-QCR15QCR0-QCR15 Field Descriptions Qspiclk QS2 Qspidout QS3 Qspidin Programming ExampleQSPICS30 QS4 QS5 22-17 22-18 Uart Ucts Urts Urxd Utxd Serial Module Overview Uart Module Memory Map Register DescriptionsIpsbar Offset 3124 2316 158 Uart Mode Registers 1 UMR1n ERR UMR1n Field Descriptions Parity Mode Parity Type PT=2describes UMR1n fields CTS 3describes UMR2n fields Uart Mode Register 2 UMR2nUMR2 n Field Descriptions UMR2n Field Descriptions Uart Status Registers USRn4describes USRn fields USRn Field Descriptions 5describes UCSRn fields Uart Clock Select Registers UCSRnRCS TCS RCS Uart Command Registers UCRnUCSRn Field Descriptions Dtin Bits Value Command Description UCR n Field Descriptions Uart Transmit Buffers UTBn Uart Receive Buffers URBnUCRn Field Descriptions Uipcr n Field Descriptions Uart Input Port Change Registers UIPCRn7describes UIPCRn fields COS CTS Uart Interrupt Status/Mask Registers UISRn/UIMRn UACRs, shown in -7,control the input enableUart Auxiliary Control Register UACRn 8describes UACRn fields 9describes UISRn and UIMRn fields Uart Baud Rate Generator Registers UBG1n/UBG2nUisr n/UIMR n Field Descriptions 10describes UIPn fields Uart Output Port Command Registers UOP1n/UOP0nUart Input Port Register UIPn 11describes UOP1 and UOP0 fields 11. UOP1/UOP0 Field Descriptions IRQ Uart Module Signal DefinitionsUcts Transmitter/Receiver Clock Source 12. Uart Module SignalsProgrammable Divider System Clock Baud Rates Following sections describe how to calculate baud ratesCalculating Baud Rates Sysclk Therefore UBG1n = 0x00 and UBG2n = 0xD6 Transmitter and Receiver Operating ModesTransmitter External Clock 23-21 20. Transmitter Timing Diagram Receiver Fifo Stack 21shows receiver functional timing 23-24 Local Loop-Back Mode Automatic Echo ModeLooping Modes Multidrop Mode Remote Loop-Back Mode 25. Multidrop Mode Timing Diagram Read Cycles Bus OperationProgramming Write Cycles Interrupt and DMA Request Initialization Setting up the Uart to Generate Core InterruptsSetting up the Uart to Request DMA Service 13. Uart Interrupts 15shows the Uart module initialization sequence Register SettingUart 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 Interface Features Chapter I2C Interface Iadr Acknowledge bit generation/detection Bus-busy detectionIfdr SCL SDA 24.3 I2C System Configuration 24.4 I2C Protocol Arbitration Procedure Repeated Start Clock Stretching Clock SynchronizationHandshaking SCL1 SCL2 I2C Interface Memory Map 24.5.1 I2C Address Register I2ADR2describes I2ADR fields I2ADR Field Descriptions I2FDR Field Descriptions 24.5.2 I2C Frequency Divider Register I2FDR3describes I2FDRIC Divider I2CR Field Descriptions 24.5.3 I2C Control Register I2CR4describes I2CR fields IEN Iien I2SR Field Descriptions 24.5.4 I2C Status Register I2SR5describes I2SR fields ICF Iaas IBB IAL SRW IIF 24.6 I2C Programming Examples 24.5.5 I2C Data I/O Register I2DR Generation of Start Post-Transfer Software Response 24.6.4 Generation of Stop I2SR Slave Mode Generation of Repeated Start Arbitration Lost SRW=1 RXAK=IAAS=1 Write 24-16 Chapter FlexCAN RAM MB3 MB2 MB1 MB0 Cantx Canrx FlexCAN Memory Map 25.1.2 External SignalsFlexCAN Memory Map Message Buffer Structure Can SystemMessage Buffers Typical can system is shown below in Figure Common Fields for Extended and Standard Format Frames Message Buffer Codes for Receive Buffers Common Extended/Standard Format FramesMessage Buffer Codes for Transmit Buffers Fields for Standard Format Frames Message Buffer Memory MapFields for Extended Format Frames Extended Format Frames Message Buffers Functional OverviewIdhigh Idlow Transmit Process Receive Process Message Buffer Handling Self-Received Frames Transmit Message Buffer Deactivation Serial Message Buffers SMBsReceive Message Buffer Deactivation Remote Frames Locking and Releasing Message Buffers Overload Frames Listen-Only ModeTime Stamp Examples of System Clock/CAN Bit-Rate/S-Clock Configuring the FlexCAN Bit TimingBit Timing Freq Mhz Time-quanta/bit Value + FlexCAN Error Counters FlexCAN Initialization Sequence Low-Power Stop Mode for Power Saving Debug ModeSpecial Operating Modes Canmcr Auto-Power Save Mode Interrupts 8describes the Canmcr fields Can Module Configuration Register CanmcrProgrammer’s Model Stop FRZ Halt Notrdy Wakemsk Softrst Frzack Canmcr Field Descriptions Stop FlexCAN Control Register 0 CANCTRL0 9describes the CANCTRL0 fields FlexCAN Control Register 1 CANCTRL1 10. Transmit Pin ConfigurationTransmit Pin Configuration 11describes the CANCTRL1 fields 11. CANCTRL1 Field Descriptions Prescaler Divide Register Presdiv12describes the Presdiv fields Samp 12. Presdiv Field Descriptions FlexCAN Control Register 2 CANCTRL213describes the CANCTRL2 fields 13. CANCTRL2 Field Descriptions 14. Timer Field Descriptions Free Running Timer Timer14describes the Timer fields Rx Mask Registers Receive Mask Registers RXGMASK, RX14MASK, RX15MASK 12. Rx Mask Registers RXGMASK, RX14MASK, and RX15MASK 17describes the Estat fields FlexCAN Error and Status Register Estat16. RXGMASK, RX14MASK, and RX15MASK Field Descriptions 17. Estat Field Descriptions Biterr BUF15M BUF14M BUF13M Interrupt Mask Register Imask18describes the Imask fields BUF10M BUF9M BUF8M 18. Imask Field Descriptions Interrupt Flag Register Iflag19describes the Iflag fields 19. Iflag Field Descriptions 20describes the Rxectr fields FlexCAN Receive Error Counter RxectrFlexCAN Transmit Error Counter Txectr 21describes the Txectr fields Chapter General Purpose I/O Module MCF5282 Ports Module Block Diagram Overview FeaturesSdram control Bit DMA timers Uart transmit/receive Modes of Operation External Signal Description MCF5282 Ports External Signals SCL ErxerSDA UCTS0 Register Overview 31-24 23-16 15-8 AccessMemory Map/Register Definition MCF5282 Ports Module Memory Map Clra Clrb Clrc Clrd Ddrb DdrcDdreh Ddrel Clre Clrf Clrg Clrh Port Output Data Registers PORTn Port Output Data Registers 8-bit PORTn 8-bit, 7-bit, 6-bit, and 4-bit Field Descriptions Port Data Direction Registers DDRnPORTn bits are described in Table Register Bits Name Description Port Data Direction Register 7-bit Port Pin Data/Set Data Registers PORTnP/SETn 10. Port Pin Data/Set Data Registers 8-bit PORTnP/SETn 8-bit, 6-bit, and 4-bit Field Descriptions Port Clear Output Data Registers CLRnPORTnP/SETn bits are described in Table PORTUAP/SETUA CLRn register bits are described in Table CLRn 8-bit,7-bit, 6-bit, and 4-bit Field Descriptions External Boot Reset Values for Pbcdpar BitsPort Size Pbpa Reset Pcdpa Reset Port B/C/D Pin Assignment Register Pbcdpar Pepar Field Descriptions Port E Pin Assignment Register PeparPEPA3 10. Reset Values for Pepar Bits and Fields Single chip mode Pfpar controls the pin function of port F75 Port F Pin Assignment Register Pfpar11. Pfpar Field Descriptions Pjpar controls the pin function of port J Port J Pin Assignment Register Pjpar12. Pjpar Field Descriptions Psdpar controls the pin function of port SD Port SD Pin Assignment Register PsdparPort AS Pin Assignment Register Paspar Paspar controls the pin function of port AS Port EH/EL Pin Assignment Register Pehlpar 14. Paspar Field Descriptions 15. Pehlpar Field Descriptions Port QS Pin Assignment Register PqsparPqspar controls the pin function of port QS ECOL, ERXCLK, ERXDV, ERXD0, Ecrs Ptcpar controls the pin function of port TC Port TC Pin Assignment Register PtcparPTCPA3 PTCPA2 PTCPA1 PTCPA0 Ptdpar controls the pin function of port TD Port TD Pin Assignment Register PtdparPTDPA3 PTDPA2 PTDPA1 PTDPA0 Port UA Pin Assignment Register Puapar Puapar controls the pin function of port UA Port Digital I/O Timing Clkout Input PIN Register PIN Data Initialization/Application Information Clkout Output Data Register Output PIN Chapter Queued Analog-to-Digital Converter Qadc Qadc Block Diagram Debug Mode Modes of Operation Port QA Signal Functions Port QA Analog Input Signals Port QA Digital Input/Output Signals Port QB Signal FunctionsPort QB Analog Input Signals Multiplexed Analog Input Signals External Trigger Input SignalsMultiplexed Address Output Signals Port QB Digital I/O Signals Dedicated Digital I/O Port Supply Signal Voltage Reference SignalsDedicated Analog Supply Signals Multiplexed Analog Input Channels This subsection describes the Qadc registers Qadc Module Configuration Register QadcmcrQadc Memory Map Qadc Test Register Qadctest Port Data Registers Portqa and Portqb Port QA and QB Data Direction Register Ddrqa and Ddrqb ANZ ANY ANX ANW Qadc Control Register 0 QACR0 Control RegistersThis subsection describes the Qadc control registers Qadc Control Register 0 QACR0 QACR0 Field Descriptions QPR6 QPR60 Prescaler fSYS Divide-by ValuesDivisor CIE1 PIE1 SSE1 Qadc Control Register 1 QACR1CIE1 Operating Mode Queue 1 Operating Modes Qadc Control Register 2 QACR2 CIE2 PIE2 SSE2 Resume CIE2 QACR2 Field DescriptionsQueue 2 Operating Modes BQ2 This subsection describes the Qadc status registers Status RegistersQadc Status Register 0 QASR0 MQ2128 Operating Modes 27-20 Queued Analog-to-Digital Converter Qadc 27-21 QS9 QS8 CF1 PF1 CF2QS7 QS6 CWP5 CWP4 CWP3 CWP2 CWP1 CWP0 11. CCW Pause Bit Response Scan Mode Queue Operation PF Asserts?10. QASR0 Field Descriptions CWP 12. Queue Status Queue 1/Queue 2 States 12. Queue Status Transition Conversion Command Word Table CCW Qadc Status Register 1 QASR1 BYP IST1 IST0 15. Input Sample Times Non-Multiplexed Input Signals Channel NumberPort Signal Name IST10 Input Sample Times Result Registers 17. Multiplexed Channel Assignments and Signal DesignationsMultiplexed Input Signals Channel Number Right-Justified Unsigned Result Register Rjurr 18. Rjurr Field Descriptions Left-Justified Signed Result Register LjsrrLeft-Justified Unsigned Result Register Ljurr Result Result Coherency 27.7 Functional DescriptionExternal Multiplexing External Multiplexing Operation 18. External Multiplexing Configuration Analog-to-Digital Converter Operation Analog SubsystemModule Version Options 21. Analog Input Channels 19. Qadc Analog Subsystem Block Diagram Conversion Cycle Times Channel Decode and Multiplexer Sample Buffer Bias Digital Control SubsystemComparator Successive Approximation Register SAR Queue Priority Timing Examples Queue Priority 22. Qadc Queue Operation with Pause 23. Status Bits Queue Priority Schemes22. Trigger Events 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 Scan Modes Disabled ModeReserved Mode Single-Scan Modes Software-Initiated Single-Scan Mode Externally Triggered Single-Scan Mode Externally Gated Single-Scan Mode Interval Timer Single-Scan Mode Continuous-Scan Modes Software-Initiated Continuous-Scan Mode Externally Triggered Continuous-Scan Mode Externally Gated Continuous-Scan Mode Periodic Timer Continuous-Scan Mode Qadc Clock Qclk Generation Periodic/Interval Timer 42. Qadc Clock Subsystem Functions Conversion Command Word Table 43illustrates the operation of the queue structure 43. Qadc Conversion Queue Operation Queued Analog-to-Digital Converter Qadc 27-61 Signal Connection Considerations Result Word Table Analog Reference Signals Analog Power Signals 45. Errors Resulting from Clipping Conversion Timing Schemes 46. External Positive Edge Trigger Mode Timing with Pause 47. Gated Mode, Single Scan Timing Analog Supply Filtering and Grounding 48. Gated Mode, Continuous Scan Timing 49. Star-Ground at the Point of Power Supply Origin 50. Input Signal Subjected to Negative Stress Accommodating Positive/Negative Stress Conditions Iinjn Iinjp Analog Input Considerations 52. External Multiplexing of Analog Signal Sources Analog Input Pins 53. Electrical Model of an A/D Input Signal 24. External Circuit Settling Time to 1/2 LSB Settling Time for the External CircuitSource Resistance RF + Rsrc 100 Ω 10 kΩ 100 kΩ 25. Error Resulting from Input Leakage IOff Error Resulting from LeakageInterrupt Operation Queue Queue Activity Status Interrupt Flag Interrupt Sources26. Qadc Status Flags and Interrupt Sources PF1 PIE1 Chapter Reset Controller Module Rsto Reset Controller Signal PropertiesRsti Name Direction Input Reset Control Register RCR Reset Controller Memory Map Lvdie Reset Status Register RSRLvdf Soft WDR POR RSR Field Descriptions WDR Reset Source Summary Reset SourcesPower-On Reset Source Type Loss-of-Clock Reset External ResetWatchdog Timer Reset Loss-of-Lock Reset Reset Control Flow Reset Control Flow Internal Reset Request Concurrent ResetsSynchronous Reset Requests Power-On Reset/Low-Voltage Detect Reset Reset Status Flags 28-12 Debug module is shown in Figure Processor/Debug Module Interface Signal Description Debug Module Signals Processor Status Encoding Real-Time Trace SupportPST30 Definition Hex Begin Execution of Taken Branch PST = PST30 Definition Hex Binary Clkout PST Ddata Abhr AatrAblr CSR Rev. a Shared BDM/Breakpoint Hardware Revision a Shared Debug ResourcesBDM/Breakpoint Registers DRc4-0 Register Name Abbreviation Initial State Aatr Field Descriptions Address Attribute Trigger Register Aatr5describes Aatr fields TMM Address Breakpoint Registers ABLR, Abhr Address Breakpoint Registers ABLR, Abhr 7describes Abhr fields Configuration/Status Register CSR6describes Ablr fields Ablr Field Description 8describes CSR fields CSR Field Descriptions Data Breakpoint/Mask Registers DBR, Dbmr IPI 9describes DBR fields Program Counter Breakpoint/Mask Registers PBR, Pbmr10describes Dbmr fields 13describes Pbmr fields Trigger Definition Register TDR12describes PBR fields 12. PBR Field Descriptions 14describes TDR fields 14. TDR Field Descriptions Edum Background Debug Mode BDMCPU Halt Eduu 29-17 Clkout Dsclk DSI BDM Serial InterfaceDSO 15describes receive BDM packet fields Receive Packet FormatTransmit Packet Format 16describes transmit BDM packet fields 17. BDM Command Summary BDM Command SetSection Command Extension Words as Required ColdFire BDM Command Format18describes BDM fields 18. BDM Field Descriptions Command Sequence Diagrams 16. Command Sequence Diagram Command Sequence Command Set DescriptionsRead A/D Register RAREG/RDREG Write A/D Register WAREG/WDREG Read Memory Location Read 21. Read Command/Result Formats 22. Read Command Sequence 23. Write Command Format Write Memory Location Write Operands are sent as 16 and 32 bits, respectively Set is returned if a bus error occursDump Memory Block Dump 25. Dump Command/Result Formats 26. Dump Command Sequence Fill Memory Block Fill 27. Fill Command Format 28. Fill Command Sequence Resume Execution GO No Operation NOP Rc encoding Read Control Register Rcreg19. Control Register Map BDM Accesses of the Stack Pointer Registers A7 SSP, USP BDM Accesses of the Emac Registers 35. Wcreg Command/Result Formats Write Control Register Wcreg Read Debug Module Register Rdmreg 20shows the definition of DRc encoding 20. Definition of DRc Encoding-Read Write Debug Module Register WdmregDRc40 Debug Register Definition Mnemonic Initial State 21. DDATA30/CSRBSTAT Breakpoint Response Real-Time Debug SupportTheory of Operation Breakpoint Status Emulator Mode Concurrent BDM and Processor Operation User Instruction Set 22. PST/DDATA Specification for User-Mode InstructionsProcessor Status, Ddata Definition Instruction Operand Syntax 29-41 29-42 23. PST/DDATA Specification for MAC Instructions 24. PST/DDATA Specification for Supervisor-Mode Instructions Supervisor Instruction Set GND Dsclk Reset DSIMotorola-Recommended BDM Pinout GND PST3 PST2 PST1 PST0 DDATA3 DDATA2 DDATA1 DDATA0 29-46 Chapter Chip Configuration Module CCM Single-Chip Mode Chip Configuration Module Block Diagram 1provides an overview of the CCM signals Signal Descriptions30.4.3 D2624, 21, 1916 Reset Configuration Override Rcon Write-Once Bits Read/Write Accessibility Configuration Read/Write Access Szen Chip Configuration Register CCRFollowing subsection describes the CCM registers BMT Rcsc Rpllsel Rpllref Reset Configuration Register RconBootps Rcsc Chip Select Configuration Rcsc Chip Select ConfigurationBootps Port Size Configuration Boot Port Size Chip Identification Register CIR Reset ConfigurationPIN PRN Reset Configuration Pin States During Reset 10. Configuration During Reset Clock Mode Chip Mode SelectionD2524 Clock Mode Selection Boot Device SelectionOutput Pad Strength Configuration 11. Chip Configuration Mode Selection 13. Clock Mode Selection Chip Select ConfigurationCCM does not generate interrupt requests Chapter Ieee 1149.1 Test Access Port Jtag Jtag Block Diagram Jtagen Jtag Enable External Signal Description31.3.1 Detailed Signal Description Pin Function Selected Signal State to the Disable Module 31.3.1.3 TMS/BKPT Test Mode Select / BreakpointTRST/DSCLK Test Reset / Development Serial Clock Tclk Test Clock Input Instruction Shift Register IR Memory Map/Register DefinitionMemory Map Idcode Register Testctrl Register Bypass RegisterJtagcfmclkdiv Register Boundary Scan Register Jtag Module TAP Controller Jtag Instructions Jtag Instructions5describes public and private instructions Instruction IR30 Instruction Summary Idcode Instruction External Test Instruction ExtestSAMPLE/PRELOAD Instruction Testleakage Instruction Enabletestctrl InstructionLockoutrecovery Instruction Highz Instruction Clamp Instruction Initialization/Application InformationRestrictions Bypass Instruction Nonscan Chain Operation Chapter Mechanical Data Pinout MCF5282 Pinout 256 Mapbga Mapbga Pin Pin Functions MCF5282 Signal Description by Pin NumberSecondary Tertiary PG2 PG4PG3 PF4 GPTA0 PUA1 VDDGPTB0 PQA3 ETRIG1 VRH VDD Vssa VSS GPTB2 PQA0 MA0 VDD VddaPUA3 VSS Xtal Jtagen PQS5 Ordering Information Motorola Part Description Speed TemperatureOrderable Part Numbers 32-8 Maximum Ratings Rating Symbol Value UnitAbsolute Maximum Ratings1 Rating Symbol HBM Characteristic Symbol Value Unit Thermal CharacteristicsThermal Characteristics 2lists thermal resistance values Characteristic Symbol Min Max Unit DC Electrical SpecificationsDC Electrical Specifications1 Solving equations 1 and 2 for K gives Wait Doze Stop Phase Lock Loop Electrical Specifications PLL Electrical Specifications Parameter Symbol Min Max Unit Qadc Electrical CharacteristicsQadc Electrical Specifications Operating Qadc Absolute Maximum Ratings Parameter Symbol Min IOH = TBD Sgfm Flash Program and Erase Characteristics Flash Memory CharacteristicsQadc Conversion Specifications Operating Num Parameter Symbol Min Max Unit Sgfm Flash Module Life Characteristics External Interface Timing Characteristics10. Processor Bus Input Timing Specifications Name Characteristic Symbol Min Max Unit Control Outputs Processor Bus Output Timing Specifications11. External Bus Output Timing Specifications 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 Symbol Min Max Unit Sras Scas Dramw 13. Gpio Timing1 33.9 General Purpose I/O TimingSras SCAS1 Dramw Reset and Configuration Override Timing 14. Reset and Configuration Override Timing Num Characteristic Min Max Units 33.11 I2C Input/Output Timing Specifications15. I2C Input Timing Specifications between SCL and SDA Clkout Rsti Rsto Fast Ethernet AC Timing Specifications 16. I2C Output Timing Specifications between SCL and SDA 17. MII Receive Signal Timing MII Receive Signal Timing ERXD30, ERXDV, ERXER, and ErxclkMII Transmit Signal Timing ETXD30, ETXEN, ETXER, Etxclk Num Characteristic Min Max Unit 18. MII Transmit Signal Timing MII Async Inputs Signal Timing Ecrs and Ecol19lists MII asynchronous inputs signal timing 19. MII Async Inputs Signal Timing MII Serial Management Channel Timing Emdio and Emdc 20. MII Serial Management Channel Timing 21lists timer module AC timings DMA Timer Module AC Timing SpecificationsQspi Electrical Specifications 22lists Qspi timings Jtag and Boundary Scan Timing 23. Jtag and Boundary Scan Timing 17. Test Access Port Timing 16. Boundary Scan Jtag Timing 24. Debug AC Timing Specification Debug AC Timing SpecificationsClkout VIL 20shows real-time trace timing for the values in Table 20. Real-Time Trace AC Timing ACR0 Table A-1. CPU Space Register Memory MapAddress Name Mnemonic Size ACR1 I2C Table A-2. Module Memory Map OverviewAddress Module Size Qadc Sdramc Registers Table A-3. Register Memory MapAddress Name Mnemonic Size SCM Registers Chip Select Registers DMA Registers Uart Registers UBG21 UISR1UIMR1 UIP01 I2C Registers DMA Timer RegistersQspi Registers Interrupt Controller Ipsbar + 0xC56 IPRL1 SWACKR0IPRH1 IMRH1 Global Interrupt Acknowledge Cycle Registers FEC Registers Gpio Registers Portsd PortasPortqs Porttc Portbp PortapSeta Ipsbar + Setb Ipsbar + Clrg ClraClrf Clras Clock Module Registers Edge Port Registers Watchdog Timer Registers General Purpose Timer a Registers Qadc 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