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Texas Instruments TMS320DM643x manual External Memory Controller EMC, Internal DMA IDMA

Models: TMS320DM643x

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2.3.4 External Memory Controller (EMC)

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Memory Controllers

2.3.4 External Memory Controller (EMC)

The external memory controller (EMC) is the hardware interface between the external memory map (external memory and external registers) and the other controllers in the C64x+ Megamodule (for example, L1P controller, L1D controller, and L2 controller). The EMC manages transfer operations between external memory and registers and the other memory controllers (L1P controller, L1D controller, and EMC).

EMC does not support the memory protection feature of the standard C64x+ Megamodule.

Refer to the TMS320C64x+ DSP Cache User’s Guide (SPRU862) and to the TMS320C64x+ DSP Megamodule Reference Guide (SPRU871) for more information on the EMC and for a description of its control registers.

2.3.5 Internal DMA (IDMA)

The internal DMA (IDMA) controller facilitates DMA transfers between any two internal memory-mapped locations. Internal memory-mapped locations include L1P, L1D, L2, and internal peripheral configuration registers.

Note: The IDMA cannot facilitate DMA to or from external memory-mapped locations. The EDMA facilitates external DMA transfers. Refer to Section 3.1 and to the TMS320DM643x DMP Enhanced Direct Memory Access (EDMA) Controller User's Guide (SPRU987) for information on EDMA.

The IDMA controller enables the rapid paging of data sections to any local memory-mapped RAM. A key advantage of the IDMA is that it allows paging between slower L2 and faster L1D data memory. These transfers take place without CPU intervention and without cache stalls.

Another key advantage is that you can use the IDMA controller to program internal peripheral configuration registers without CPU intervention.

Refer to the internal DMA (IDMA) controller section in the TMS320C64x+ DSP Megamodule Reference Guide (SPRU871) for more information on the IDMA controller and for a description of its control registers.

SPRU978E–March 2008

TMS320C64x+ Megamodule

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Texas Instruments TMS320DM643x manual External Memory Controller EMC, Internal DMA IDMA

Contents

TMS320DM643x DMP DSP Subsystem Reference GuideSubmit Documentation Feedback SPRU978E-MarchContents 6.7.3 Module Error Pending Register 1 MERRPR1 Boot Modes ResetList of Figures List of Tables List of TablesList of Tables SPRU978E-MarchSubmit Documentation Feedback Preface Read This FirstAbout This Manual Notational ConventionsRead This First TMS320C6000, C6000 are trademarks of Texas InstrumentsSPRU978E-March Submit Documentation FeedbackIntroduction Block DiagramChapter Introduction1.2 Block Diagram Figure 1-1. TMS320DM643x DMP Block Diagram1.1 Introduction 1.3.1 Components of the DSP Subsystem 1.3 DSP Subsystem in TMS320DM643x DMPIntroduction SPRU978E-MarchSubmit Documentation Feedback TMS320C64x+ CPU TMS320C64x+ MegamoduleMemory Controllers Internal Peripherals2.2 TMS320C64x+ CPU 2.1 IntroductionFigure 2-1. TMS320C64x+ Megamodule Block Diagram 2.3.1 L1P Controller 2.3 Memory ControllersMemory Controllers Figure 2-2. C64x+ Cache Memory Architecture2.3.3 L2 Controller 2.3.2 L1D Controller2.3.5 Internal DMA IDMA 2.3.4 External Memory Controller EMC2.4.2 Power-Down Controller PDC 2.4 Internal Peripherals2.4.1 Interrupt Controller INTC 2.4.3 Bandwidth Manager TMS320C64x+ Megamodule SPRU978E-MarchSubmit Documentation Feedback Memory Map System MemoryMemory Interfaces Overview Chapter3.1.1 DSP Internal Memory L1P, L1D, L2 3.1 Memory Map3.1.2 External Memory 3.1.3 Internal Peripherals3.2.1 DDR2 External Memory Interface 3.2 Memory Interfaces Overview3.2.2 External Memory Interface 3.2.2.1 Asynchronous EMIF InterfaceSystem Memory SPRU978E-MarchSubmit Documentation Feedback Overview Device ClockingClock Domains Chapter4.2 Clock Domains 4.1 Overview4.2.1 Core Domains Table 4-1. System Clock Modes and Fixed Ratios for Core Clock DomainsClock Domains Figure 4-1. Overall Clocking DiagramTable 4-2. Example PLL1 Frequencies and Dividers 27 MHZ Clock Input 4.2.2 Core Frequency Flexibility4.2.3 DDR2/EMIF Clock Table 4-3. Example PLL2 Frequencies Core Voltage =Table 4-4. Example PLL2 Frequencies Core Voltage = Table 4-5. Peripheral I/O Domain Clock 4.2.4 I/O DomainsFigure 4-2. VPBE/DAC Clocking 4.2.5 Video Processing Back EndTable 4-6. Possible Clocking Modes Clocking ModeClock Domains VPSSCLKCTL.MUXSEL BitPLL Module PLL ControllerPLL1 Control PLL2 Control5.2 PLL1 Control 5.1 PLL Module5.2.2 Steps for Changing PLL1/Core Domain Frequency 5.2.1 Device Clock GenerationFigure 5-1. PLL1 Structure in the TMS320DM643x DMP Table 5-1. System PLLC1 Output Clocks5.2.2.1 Initialization to PLL Mode from PLL Power Down 5.2.2.2 Changing PLL Multiplier Example 5-1. Calculating Number of Clock Cycles N 5.2.2.3 Changing SYSCLK Dividers5.3.1 Device Clock Generation 5.3 PLL2 ControlFigure 5-2. PLL2 Structure in the TMS320DM643x DMP Table 5-2. DDR PLLC2 Output Clocks5.3.2 Steps for Changing PLL2 Frequency 5.3.2.1 DDR2 Considerations When Modifying PLL2 Frequency5.3.2.2 Initialization to PLL Mode from PLL Power Down 5.3.2.3 Changing PLL Multiplier Example 5-2. Calculating Number of Clock Cycles N 5.3.2.4 Changing SYSCLK DividersTable 5-4. PLL and Reset Controller Registers Table 5-3. PLL and Reset Controller ListPLL and Reset Controller 5.4 PLL Controller RegistersFigure 5-4. Reset Type Status Register RSTYPE 5.4.2 Reset Type Status Register RSTYPETable 5-6. Reset Type Status Register RSTYPE Field Descriptions 5.4.1 Peripheral ID Register PIDFigure 5-5. PLL Control Register PLLCTL 5.4.3 PLL Control Register PLLCTLTable 5-7. PLL Control Register PLLCTL Field Descriptions PLL Controller Registers5.4.5 PLL Controller Divider 1 Register PLLDIV1 5.4.4 PLL Multiplier Control Register PLLMFigure 5-6. PLL Multiplier Control Register PLLM Table 5-8. PLL Multiplier Control Register PLLM Field Descriptions5.4.7 PLL Controller Divider 3 Register PLLDIV3 5.4.6 PLL Controller Divider 2 Register PLLDIV2Figure 5-8. PLL Controller Divider 2 Register PLLDIV2 Figure 5-9. PLL Controller Divider 3 Register PLLDIV3Figure 5-10. Oscillator Divider 1 Register OSCDIV1 5.4.8 Oscillator Divider 1 Register OSCDIV1Table 5-12. Oscillator Divider 1 Register OSCDIV1 Field Descriptions PLL Controller RegistersFigure 5-11. Bypass Divider Register BPDIV 5.4.9 Bypass Divider Register BPDIVTable 5-13. Bypass Divider Register BPDIV Field Descriptions PLL Controller RegistersFigure 5-12. PLL Controller Command Register PLLCMD 5.4.10 PLL Controller Command Register PLLCMDTable 5-14. PLL Controller Command Register PLLCMD Field Descriptions 5.4.11 PLL Controller Status Register PLLSTATFigure 5-14. PLL Controller Clock Align Control Register ALNCTL 5.4.12 PLL Controller Clock Align Control Register ALNCTLPLL Controller Registers FieldFigure 5-15. PLLDIV Ratio Change Status Register DCHANGE 5.4.13 PLLDIV Ratio Change Status Register DCHANGEPLL Controller Registers FieldFigure 5-16. Clock Enable Control Register CKEN 5.4.14 Clock Enable Control Register CKENTable 5-18. Clock Enable Control Register CKEN Field Descriptions PLL Controller RegistersFigure 5-17. Clock Status Register CKSTAT 5.4.15 Clock Status Register CKSTATTable 5-19. Clock Status Register CKSTAT Field Descriptions PLL Controller RegistersFigure 5-18. SYSCLK Status Register SYSTAT 5.4.16 SYSCLK Status Register SYSTATTable 5-20. SYSCLK Status Register SYSTAT Field Descriptions PLL Controller RegistersPower Domain and Module Topology Power and Sleep ControllerPower Domain and Module States Executing State Transitions6.1 Introduction Figure 6-1. Power and Sleep Controller PSC IntegrationTable 6-1. DM643x DMP Default Module Configuration 6.2 Power Domain and Module Topology6.3.1 Power Domain States 6.3 Power Domain and Module States6.3.2 Module States Table 6-2. Module States6.4.1 Power Domain State Transitions 6.3.3 Local Reset6.4 Executing State Transitions 6.4.2 Module State Transitions6.5 IcePick Emulation Support in the PSC Table 6-3. IcePick Emulation Commands6.6 PSC Interrupts 6.6.1 Interrupt Events6.6.1.2 Local Reset Emulation Events 6.6.2 Interrupt Registers6.6.1.1 Module State Emulation Events Table 6-5. Power and Sleep Controller PSC Registers 6.6.3 Interrupt Handling6.7 PSC Registers 6.7.2 Interrupt Evaluation Register INTEVAL 6.7.1 Peripheral Revision and Class Information Register PIDFigure 6-2. Peripheral Revision and Class Information Register PID Figure 6-3. Interrupt Evaluation Register INTEVAL6.7.4 Module Error Clear Register 1 MERRCR1 6.7.3 Module Error Pending Register 1 MERRPR1Figure 6-4. Module Error Pending Register 1 MERRPR1 Table 6-8. Module Error Pending Register 1 MERRPR1 Field Descriptions6.7.6 Power Domain Transition Status Register PTSTAT 6.7.5 Power Domain Transition Command Register PTCMDFigure 6-6. Power Domain Transition Command Register PTCMD Figure 6-7. Power Domain Transition Status Register PTSTATFigure 6-8. Power Domain Status 0 Register PDSTAT0 6.7.7 Power Domain Status 0 Register PDSTAT0Table 6-12. Power Domain Status 0 Register PDSTAT0 Field Descriptions Power and Sleep ControllerFigure 6-9. Power Domain Control 0 Register PDCTL0 6.7.8 Power Domain Control 0 Register PDCTL0Table 6-13. Power Domain Control 0 Register PDCTL0 Field Descriptions Power and Sleep Controller6.7.9 Module Status n Register MDSTATn Power and Sleep ControllerFigure 6-10. Module Status n Register MDSTATn Table 6-14. Module Status n Register MDSTATn Field Descriptions6.7.10 Module Control n Register MDCTLn Power and Sleep ControllerFigure 6-11. Module Control n Register MDCTLn Table 6-15. Module Control n Register MDCTLn Field DescriptionsPower and Sleep Controller SPRU978E-MarchSubmit Documentation Feedback DSP Sleep Mode Management Power Management3.3 V I/O Power Down Video DAC Power DownTable 7-1. Power Management Features 7.1 Overview7.2 PSC and PLLC Overview 7.3 Clock Management 7.3.3 PLL Bypass and Power Down7.3.1 Module Clock ON/OFF 7.3.2 Module Clock Frequency Scaling7.4.1 DSP Sleep Modes 7.4 DSP Sleep Mode Management7.4.2 DSP Module Clock ON/OFF 7.4.2.1 DSP Module Clock ON7.5 3.3 V I/O Power Down 7.6 Video DAC Power Down7.4.2.2 DSP Module Clock Off Power Management SPRU978E-MarchSubmit Documentation Feedback Interrupt Controller ChapterInterrupt Controller Interrupt Controller SPRU978E-MarchSubmit Documentation Feedback 3.3 V I/O Power-Down Control Device ConfigurationBoot Control System Module9.3.2 Device Boot Configuration Status 9.3 Device Configuration9.1 Overview 9.2 Device Identification9.5.1 Timer Control 9.4 3.3 V I/O Power-Down Control9.5 Peripheral Status and Control 9.5.2 VPSS Clock and DAC Control9.6 Bandwidth Management 9.6.1 Bus Master DMA Priority ControlTable 9-1. TMS320DM643x DMP Master IDs 9.6.2 EDMA Transfer Controller Configuration 9.7 Boot ControlTable 9-2. TMS320DM643x DMP Default Master Priorities System Module SPRU978E-MarchSubmit Documentation Feedback Reset Pins ResetDevice Configurations at Reset DSP Reset10.3 Device Configurations at Reset 10.2 Reset PinsTable 10-1. Reset Types 10.1 Overview10.4.1 DSP Local Reset 10.4 DSP Reset10.4.2 DSP Module Reset 10.4.2.1 Software Reset Disable SwRstDisable10.4.2.2 Synchronous Reset SyncReset Chapter Boot ModesBoot Modes SPRU978E-MarchSubmit Documentation Feedback Appendix A Revision HistoryTable A-1. Document Revision History SPRU978E-MarchIMPORTANT NOTICE power.ti.comProducts Applications