Texas Instruments TMS320DM357 User manual

TMS320DM357 DMSoC Enhanced DirectMemory Access (EDMA3) Controller
User's Guide
Literature Number: SPRUG34November 2008

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Contents
Preface .............................................................................................................................. 13
1 Introduction ............................................................................................................. 171.1 Overview..................................................................................................................... 181.2 Features ..................................................................................................................... 181.3 Terminology Used in This Document .................................................................................... 19
2 EDMA3 Architecture ................................................................................................. 212.1 Functional Overview ....................................................................................................... 222.1.1 EDMA3 Controller Block Diagram ............................................................................... 222.1.2 EDMA3 Channel Controller (EDMA3CC) ...................................................................... 222.1.3 EDMA3 Transfer Controller (EDMA3TC) ....................................................................... 242.2 Types of EDMA3 Transfers ............................................................................................... 252.2.1 A-Synchronized Transfers........................................................................................ 262.2.2 AB-Synchronized Transfers ...................................................................................... 272.3 Parameter RAM (PaRAM) ................................................................................................ 282.3.1 PaRAM Set ......................................................................................................... 292.3.2 EDMA3 Channel Parameter Set Fields ........................................................................ 312.3.3 Null PaRAM Set ................................................................................................... 332.3.4 Dummy PaRAM Set............................................................................................... 332.3.5 Dummy Versus Null Transfer Comparison ..................................................................... 332.3.6 Parameter Set Updates .......................................................................................... 332.3.7 Linking Transfers .................................................................................................. 352.4 Initiating a DMA Transfer .................................................................................................. 382.4.1 DMA Channel ...................................................................................................... 382.4.2 QDMA Channels .................................................................................................. 412.4.3 Comparison Between DMA and QDMA Channels ............................................................ 412.5 Completion of a DMA Transfer ........................................................................................... 422.5.1 Normal Completion ................................................................................................ 432.5.2 Early Completion .................................................................................................. 432.5.3 Dummy or Null Completion ...................................................................................... 432.6 Event, Channel, and PaRAM Mapping .................................................................................. 432.6.1 DMA Channel to PaRAM Mapping .............................................................................. 442.6.2 QDMA Channel to PaRAM Mapping............................................................................ 442.7 EDMA3 Channel Controller Regions .................................................................................... 452.7.1 Region Overview .................................................................................................. 452.7.2 Channel Controller Regions...................................................................................... 472.8 Chaining EDMA3 Channels ............................................................................................... 472.9 EDMA3 Interrupts .......................................................................................................... 492.9.1 Transfer Completion Interrupts .................................................................................. 492.9.2 EDMA3 Interrupt Servicing ....................................................................................... 512.9.3 Interrupt Evaluation Operations ................................................................................. 542.9.4 Error Interrupts ..................................................................................................... 54
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2.10 Event Queue(s) ............................................................................................................. 552.10.1 DMA/QDMA Channel to Event Queue Mapping ............................................................. 562.10.2 Queue RAM Debug Visibility ................................................................................... 562.10.3 Queue Resource Tracking ...................................................................................... 562.10.4 Performance Considerations ................................................................................... 562.11 EDMA3 Transfer Controller (EDMA3TC) ................................................................................ 572.11.1 Architecture Details .............................................................................................. 572.11.2 Error Generation .................................................................................................. 582.11.3 Debug Features .................................................................................................. 592.11.4 EDMA3TC Configuration ........................................................................................ 592.12 Event Dataflow .............................................................................................................. 602.13 EDMA3 Prioritization ....................................................................................................... 612.13.1 Channel Priority .................................................................................................. 612.13.2 Trigger Source Priority ........................................................................................... 622.13.3 Dequeue Priority .................................................................................................. 622.13.4 System (Transfer Controller) Priority .......................................................................... 622.14 EDMA3 Operating Frequency (Clock Control) ......................................................................... 622.15 Reset Considerations ...................................................................................................... 622.16 Power Management ........................................................................................................ 632.17 Emulation Considerations ................................................................................................. 63
3 EDMA3 Transfer Examples ........................................................................................ 653.1 Block Move Example ...................................................................................................... 663.2 Subframe Extraction Example ............................................................................................ 683.3 Data Sorting Example ..................................................................................................... 703.4 Peripheral Servicing Example ............................................................................................ 723.4.1 Nonbursting Peripherals .......................................................................................... 723.4.2 Bursting Peripherals .............................................................................................. 743.4.3 Continuous Operation ............................................................................................ 763.4.4 Ping-Pong Buffering ............................................................................................... 793.4.5 Transfer Chaining Examples ..................................................................................... 82
4 Registers ................................................................................................................. 854.1 Register Memory Maps .................................................................................................... 864.2 Parameter RAM (PaRAM) Entries ....................................................................................... 864.2.1 Channel Options Parameter (OPT) ............................................................................. 874.2.2 Channel Source Address Parameter (SRC) ................................................................... 894.2.3 A Count/B Count Parameter (A_B_CNT) ...................................................................... 894.2.4 Channel Destination Address Parameter (DST) .............................................................. 904.2.5 Source B Index/Destination B Index Parameter (SRC_DST_BIDX) ........................................ 904.2.6 Link Address/B Count Reload Parameter (LINK_BCNTRLD) ............................................... 914.2.7 Source C Index/Destination C Index Parameter (SRC_DST_CIDX) ....................................... 924.2.8 C Count Parameter (CCNT) ..................................................................................... 924.3 EDMA3 Channel Controller Control Registers ......................................................................... 934.3.1 Global Registers ................................................................................................... 974.3.2 Error Registers ................................................................................................... 1024.3.3 Region Access Enable Registers .............................................................................. 1104.3.4 Status/Debug Visibility Registers .............................................................................. 1124.3.5 DMA Channel Registers ........................................................................................ 1164.3.6 Interrupt Registers ............................................................................................... 128
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4.3.7 QDMA Registers ................................................................................................. 1344.4 EDMA3 Transfer Controller Control Registers ........................................................................ 1404.4.1 Peripheral Identification Register (PID) ....................................................................... 1414.4.2 EDMA3TC Configuration Register (TCCFG) ................................................................. 1424.4.3 EDMA3TC Channel Status Register (TCSTAT) ............................................................. 1434.4.4 Error Registers ................................................................................................... 1444.4.5 Read Rate Register (RDRATE) ................................................................................ 1494.4.6 EDMA3TC Channel Registers ................................................................................. 149
A Tips ....................................................................................................................... 163A.1 Debug Checklist ........................................................................................................... 163A.2 Miscellaneous Programming/Debug Tips .............................................................................. 164
B Setting Up a Transfer .............................................................................................. 165
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List of Figures
2-1 EDMA3 Controller Block Diagram ........................................................................................ 222-2 EDMA3 Channel Controller (EDMA3CC) Block Diagram ............................................................. 232-3 EDMA3 Transfer Controller (EDMA3TC) Block Diagram ............................................................. 242-4 Definition of ACNT, BCNT, and CCNT ................................................................................. 252-5 A-Synchronized Transfers (ACNT = n, BCNT = 4, CCNT = 3) ....................................................... 262-6 AB-Synchronized Transfers (ACNT = n, BCNT = 4, CCNT = 3) ..................................................... 272-7 PaRAM Set .................................................................................................................. 292-8 Linked Transfer ............................................................................................................. 362-9 Link-to-Self Transfer ....................................................................................................... 372-10 QDMA Channel to PaRAM Mapping .................................................................................... 452-11 Shadow Region Registers ................................................................................................ 462-12 Interrupt Diagram ........................................................................................................... 512-13 Error Interrupt Operation .................................................................................................. 552-14 EDMA3 Prioritization ....................................................................................................... 613-1 Block Move Example ...................................................................................................... 663-2 Block Move Example PaRAM Configuration............................................................................ 673-3 Subframe Extraction Example ............................................................................................ 683-4 Subframe Extraction Example PaRAM Configuration ................................................................. 693-5 Data Sorting Example ..................................................................................................... 703-6 Data Sorting Example PaRAM Configuration .......................................................................... 713-7 Servicing Incoming ASP Data Example ................................................................................. 723-8 Servicing Incoming ASP Data Example PaRAM ....................................................................... 733-9 Servicing Peripheral Burst Example ..................................................................................... 743-10 Servicing Peripheral Burst Example PaRAM ........................................................................... 753-11 Servicing Continuous ASP Data Example .............................................................................. 763-12 Servicing Continuous ASP Data Example PaRAM .................................................................... 773-13 Servicing Continuous ASP Data Example Reload PaRAM ........................................................... 783-14 Ping-Pong Buffering for ASP Data Example ........................................................................... 803-15 Ping-Pong Buffering for ASP Example PaRAM ........................................................................ 803-16 Ping-Pong Buffering for ASP Example Pong PaRAM ................................................................. 813-17 Ping-Pong Buffering for ASP Example Ping PaRAM .................................................................. 823-18 Intermediate Transfer Completion Chaining Example ................................................................. 833-19 Single Large Block Transfer Example ................................................................................... 843-20 Smaller Packet Data Transfers Example ................................................................................ 844-1 Channel Options Parameter (OPT) ...................................................................................... 874-2 Channel Source Address Parameter (SRC) ............................................................................ 894-3 A Count/B Count Parameter (A_B_CNT) ............................................................................... 894-4 Channel Destination Address Parameter (DST) ....................................................................... 904-5 Source B Index/Destination B Index Parameter (SRC_DST_BIDX) ................................................. 904-6 Link Address/B Count Reload Parameter (LINK_BCNTRLD) ........................................................ 914-7 Source C Index/Destination C Index Parameter (SRC_DST_CIDX) ................................................ 924-8 C Count Parameter (CCNT) .............................................................................................. 924-9 Peripheral ID Register (PID) .............................................................................................. 974-10 EDMA3CC Configuration Register (CCCFG) ........................................................................... 974-11 QDMA Channel Map nRegisters (QCHMAP n)........................................................................ 994-12 DMA Channel Queue Number Registers (DMAQNUM n)............................................................ 1004-13 QDMA Channel Queue Number Register (QDMAQNUM) .......................................................... 1014-14 Queue Priority Register (QUEPRI) ..................................................................................... 1024-15 Event Missed Register (EMR) ........................................................................................... 1034-16 Event Missed Register High (EMRH) .................................................................................. 1034-17 Event Missed Clear Register (EMCR) ................................................................................. 1044-18 Event Missed Clear Register High (EMCRH) ......................................................................... 104
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4-19 QDMA Event Missed Register (QEMR) ................................................................................ 1054-20 QDMA Event Missed Clear Register (QEMCR) ...................................................................... 1064-21 EDMA3CC Error Register (CCERR) ................................................................................... 1074-22 EDMA3CC Error Clear Register (CCERRCLR) ....................................................................... 1084-23 Error Evaluation Register (EEVAL) ..................................................................................... 1094-24 DMA Region Access Enable Register for Region m(DRAE m)..................................................... 1104-25 DMA Region Access Enable High Register for Region m(DRAEH m)............................................ 1104-26 QDMA Region Access Enable for Region m(QRAE m)............................................................. 1114-27 Event Queue Entry Registers (Q xEy).................................................................................. 1124-28 Queue nStatus Register (QSTAT n)................................................................................... 1134-29 Queue Watermark Threshold A Register (QWMTHRA) ............................................................. 1144-30 EDMA3CC Status Register (CCSTAT) ................................................................................ 1154-31 Event Register (ER) ...................................................................................................... 1174-32 Event Register High (ERH) .............................................................................................. 1174-33 Event Clear Register (ECR) ............................................................................................. 1184-34 Event Clear Register High (ECRH) ..................................................................................... 1184-35 Event Set Register (ESR)................................................................................................ 1194-36 Event Set Register High (ESRH) ....................................................................................... 1204-37 Chained Event Register (CER) ......................................................................................... 1214-38 Chained Event Register High (CERH) ................................................................................. 1214-39 Event Enable Register (EER) ........................................................................................... 1224-40 Event Enable Register High (EERH) ................................................................................... 1224-41 Event Enable Clear Register (EECR) .................................................................................. 1234-42 Event Enable Clear Register High (EECRH) .......................................................................... 1234-43 Event Enable Set Register (EESR) .................................................................................... 1244-44 Event Enable Set Register High (EESRH) ............................................................................ 1244-45 Secondary Event Register (SER) ....................................................................................... 1254-46 Secondary Event Register High (SERH) .............................................................................. 1264-47 Secondary Event Clear Register (SECR) ............................................................................. 1264-48 Secondary Event Clear Register High (SECRH) ..................................................................... 1274-49 Interrupt Enable Register (IER) ......................................................................................... 1284-50 Interrupt Enable Register High (IERH) ................................................................................. 1284-51 Interrupt Enable Clear Register (IECR) ................................................................................ 1294-52 Interrupt Enable Clear Register High (IECRH) ........................................................................ 1294-53 Interrupt Enable Set Register (IESR) .................................................................................. 1304-54 Interrupt Enable Set Register High (IESRH) .......................................................................... 1304-55 Interrupt Pending Register (IPR) ........................................................................................ 1314-56 Interrupt Pending Register High (IPRH) ............................................................................... 1314-57 Interrupt Clear Register (ICR) ........................................................................................... 1324-58 Interrupt Clear Register High (ICRH) ................................................................................... 1324-59 Interrupt Evaluate Register (IEVAL) .................................................................................... 1334-60 QDMA Event Register (QER) ........................................................................................... 1344-61 QDMA Event Enable Register (QEER) ................................................................................ 1354-62 QDMA Event Enable Clear Register (QEECR) ....................................................................... 1364-63 QDMA Event Enable Set Register (QEESR) ......................................................................... 1374-64 QDMA Secondary Event Register (QSER) ............................................................................ 1384-65 QDMA Secondary Event Clear Register (QSECR) .................................................................. 1394-66 Peripheral ID Register (PID)............................................................................................. 1414-67 EDMA3TC Configuration Register (TCCFG) .......................................................................... 1424-68 EDMA3TC Channel Status Register (TCSTAT) ...................................................................... 1434-69 Error Status Register (ERRSTAT) ...................................................................................... 1444-70 Error Enable Register (ERREN) ........................................................................................ 1454-71 Error Clear Register (ERRCLR) ........................................................................................ 146
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4-72 Error Details Register (ERRDET) ....................................................................................... 1474-73 Error Interrupt Command Register (ERRCMD) ....................................................................... 1484-74 Read Rate Register (RDRATE) ......................................................................................... 1494-75 Source Active Options Register (SAOPT) ............................................................................. 1504-76 Source Active Source Address Register (SASRC) ................................................................... 1514-77 Source Active Count Register (SACNT) ............................................................................... 1514-78 Source Active Destination Address Register (SADST) .............................................................. 1524-79 Source Active Source B-Dimension Index Register (SABIDX) ..................................................... 1524-80 Source Active Memory Protection Proxy Register (SAMPPRXY) .................................................. 1534-81 Source Active Count Reload Register (SACNTRLD) ................................................................ 1544-82 Source Active Source Address B-Reference Register (SASRCBREF) ............................................ 1544-83 Source Active Destination Address B-Reference Register (SADSTBREF) ....................................... 1554-84 Destination FIFO Options Register (DFOPT n)........................................................................ 1564-85 Destination FIFO Source Address Register (DFSRC n).............................................................. 1574-86 Destination FIFO Count Register (DFCNT n).......................................................................... 1584-87 Destination FIFO Destination Address Register (DFDST n)......................................................... 1594-88 Destination FIFO B-Index Register (DFBIDX n)....................................................................... 1594-89 Destination FIFO Memory Protection Proxy Register (DFMPPRXY n)............................................. 1604-90 Destination FIFO Count Reload Register (DFCNTRLD n)........................................................... 1614-91 Destination FIFO Source Address B-Reference Register (DFSRCBREF n)...................................... 1614-92 Destination FIFO Destination Address B-Reference Register (DFDSTBREF n).................................. 162
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List of Tables
2-1 EDMA3 Parameter RAM Contents ....................................................................................... 282-2 EDMA3 Channel Parameter Description ................................................................................ 302-3 Dummy and Null Transfer Request ...................................................................................... 332-4 Parameter Updates in EDMA3CC (for Non-Null, Non-Dummy PaRAM Set) ....................................... 342-5 EDMA3 Channel Synchronization Events ............................................................................... 382-6 Expected Number of Transfers for Non-Null Transfer ................................................................. 422-7 EDMA3 DMA Channel to PaRAM Mapping ............................................................................ 442-8 Shadow Region Registers ................................................................................................ 462-9 EDMA3 Shadow Regions ................................................................................................. 472-10 Chain Event Triggers ...................................................................................................... 482-11 EDMA3 Transfer Completion Interrupts ................................................................................. 492-12 EDMA3 Error Interrupts ................................................................................................... 492-13 Transfer Complete Code (TCC) to EDMA3CC Interrupt Mapping ................................................... 502-14 Number of Interrupts ....................................................................................................... 502-15 Read/Write Command Optimization Rules.............................................................................. 582-16 EDMA3 Transfer Controller Configurations ............................................................................. 594-1 EDMA3 Channel Controller (EDMA3CC) Parameter RAM (PaRAM) Entries ...................................... 864-2 Channel Options Parameters (OPT) Field Descriptions .............................................................. 874-3 Channel Source Address Parameter (SRC) Field Descriptions ...................................................... 894-4 A Count/B Count Parameter (A_B_CNT) Field Descriptions ......................................................... 894-5 Channel Destination Address Parameter (DST) Field Descriptions ................................................. 904-6 Source B Index/Destination B Index Parameter (SRC_DST_BIDX) Field Descriptions .......................... 904-7 Link Address/B Count Reload Parameter (LINK_BCNTRLD) Field Descriptions .................................. 914-8 Source C Index/Destination C Index Parameter (SRC_DST_CIDX) Field Descriptions .......................... 924-9 C Count Parameter (CCNT) Field Descriptions ........................................................................ 924-10 EDMACC Registers ........................................................................................................ 934-11 Peripheral ID Register (PID) Field Descriptions ........................................................................ 974-12 EDMA3CC Configuration Register (CCCFG) Field Descriptions .................................................... 984-13 QDMA Channel Map nRegisters (QCHMAP n) Field Descriptions .................................................. 994-14 DMA Channel Queue Number Registers (DMAQNUM n) Field Descriptions ..................................... 1004-15 Bits in DMAQNUM n...................................................................................................... 1004-16 QDMA Channel Queue Number Register (QDMAQNUM) Field Descriptions .................................... 1014-17 Queue Priority Register (QUEPRI) Field Descriptions ............................................................... 1024-18 Event Missed Register (EMR) Field Descriptions .................................................................... 1034-19 Event Missed Register High (EMRH) Field Descriptions ............................................................ 1034-20 Event Missed Clear Register (EMCR) Field Descriptions ........................................................... 1044-21 Event Missed Clear Register High (EMCRH) Field Descriptions ................................................... 1044-22 QDMA Event Missed Register (QEMR) Field Descriptions ......................................................... 1054-23 QDMA Event Missed Clear Register (QEMCR) Field Descriptions ................................................ 1064-24 EDMA3CC Error Register (CCERR) Field Descriptions ............................................................. 1074-25 EDMA3CC Error Clear Register (CCERRCLR) Field Descriptions ................................................ 1084-26 Error Evaluation Register (EEVAL) Field Descriptions .............................................................. 1094-27 DMA Region Access Enable Registers for Region m(DRAE m/DRAEH m) Field Descriptions ................. 1104-28 QDMA Region Access Enable for Region m(QRAE m) Field Descriptions ....................................... 1114-29 Event Queue Entry Registers (Q xEy) Field Descriptions ............................................................ 1124-30 Queue nStatus Register (QSTAT n) Field Descriptions ............................................................. 1134-31 Queue Watermark Threshold A Register (QWMTHRA) Field Descriptions ....................................... 1144-32 EDMA3CC Status Register (CCSTAT) Field Descriptions .......................................................... 1154-33 Event Register (ER) Field Descriptions ................................................................................ 117
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4-34 Event Register High (ERH) Field Descriptions ........................................................................ 1174-35 Event Clear Register (ECR) Field Descriptions ....................................................................... 1184-36 Event Clear Register High (ECRH) Field Descriptions .............................................................. 1184-37 Event Set Register (ESR) Field Descriptions ......................................................................... 1194-38 Event Set Register High (ESRH) Field Descriptions ................................................................. 1204-39 Chained Event Register (CER) Field Descriptions ................................................................... 1214-40 Chained Event Register High (CERH) Field Descriptions ........................................................... 1214-41 Event Enable Register (EER) Field Descriptions ..................................................................... 1224-42 Event Enable Register High (EERH) Field Descriptions ............................................................. 1234-43 Event Enable Clear Register (EECR) Field Descriptions ............................................................ 1234-44 Event Enable Clear Register High (EECRH) Field Descriptions ................................................... 1244-45 Event Enable Set Register (EESR) Field Descriptions ............................................................. 1244-46 Event Enable Set Register High (EESRH) Field Descriptions ...................................................... 1254-47 Secondary Event Register (SER) Field Descriptions ................................................................ 1254-48 Secondary Event Register High (SERH) Field Descriptions ........................................................ 1264-49 Secondary Event Clear Register (SECR) Field Descriptions ....................................................... 1264-50 Secondary Event Clear Register High (SECRH) Field Descriptions ............................................... 1274-51 Interrupt Enable Register (IER) Field Descriptions ................................................................... 1284-52 Interrupt Enable Register High (IERH) Field Descriptions .......................................................... 1284-53 Interrupt Enable Clear Register (IECR) Field Descriptions .......................................................... 1294-54 Interrupt Enable Clear Register High (IECRH) Field Descriptions ................................................. 1294-55 Interrupt Enable Set Register (IESR) Field Descriptions ............................................................ 1304-56 Interrupt Enable Set Register High (IESRH) Field Descriptions .................................................... 1304-57 Interrupt Pending Register (IPR) Field Descriptions ................................................................. 1314-58 Interrupt Pending Register High (IPRH) Field Descriptions ......................................................... 1314-59 Interrupt Clear Register (ICR) Field Descriptions ..................................................................... 1324-60 Interrupt Clear Register High (ICRH) Field Descriptions ............................................................ 1324-61 Interrupt Evaluate Register (IEVAL) Field Descriptions ............................................................. 1334-62 QDMA Event Register (QER) Field Descriptions ..................................................................... 1344-63 QDMA Event Enable Register (QEER) Field Descriptions .......................................................... 1354-64 QDMA Event Enable Clear Register (QEECR) Field Descriptions ................................................. 1364-65 QDMA Event Enable Set Register (QEESR) Field Descriptions ................................................... 1374-66 QDMA Secondary Event Register (QSER) Field Descriptions ..................................................... 1384-67 QDMA Secondary Event Clear Register (QSECR) Field Descriptions ............................................ 1394-68 EDMA3 Transfer Controller Registers ................................................................................. 1404-69 Peripheral ID Register (PID) Field Descriptions ...................................................................... 1414-70 EDMA3TC Configuration Register (TCCFG) Field Descriptions ................................................... 1424-71 EDMA3TC Channel Status Register (TCSTAT) Field Descriptions ................................................ 1434-72 Error Status Register (ERRSTAT) Field Descriptions ............................................................... 1444-73 Error Enable Register (ERREN) Field Descriptions .................................................................. 1454-74 Error Clear Register (ERRCLR) Field Descriptions .................................................................. 1464-75 Error Details Register (ERRDET) Field Descriptions ................................................................ 1474-76 Error Interrupt Command Register (ERRCMD) Field Descriptions ................................................. 1484-77 Read Rate Register (RDRATE) Field Descriptions .................................................................. 1494-78 Source Active Options Register (SAOPT) Field Descriptions ....................................................... 1504-79 Source Active Source Address Register (SASRC) Field Descriptions ............................................ 1514-80 Source Active Count Register (SACNT) Field Descriptions ......................................................... 1514-81 Source Active Destination Address Register (SADST) Field Descriptions ........................................ 1524-82 Source Active Source B-Dimension Index Register (SABIDX) Field Descriptions ............................... 1524-83 Source Active Memory Protection Proxy Register (SAMPPRXY) Field Descriptions ............................ 1534-84 Source Active Count Reload Register (SACNTRLD) Field Descriptions .......................................... 154
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