SPRS989F December   2016  – December 2018 DRA74P , DRA75P

PRODUCTION DATA.  

  1. 1Device Overview
    1. 1.1 Features
    2. 1.2 Applications
    3. 1.3 Description
    4. 1.4 Functional Block Diagram
  2. 2Revision History
  3. 3Device Comparison
    1. 3.1 Device Comparison Table
    2. 3.2 Related Products
  4. 4Terminal Configuration and Functions
    1. 4.1 Pin Diagram
    2. 4.2 Pin Attributes
    3. 4.3 Signal Descriptions
      1. 4.3.1  VIP
      2. 4.3.2  DSS
      3. 4.3.3  HDMI
      4. 4.3.4  EMIF
      5. 4.3.5  GPMC
      6. 4.3.6  Timers
      7. 4.3.7  I2C
      8. 4.3.8  HDQ1W
      9. 4.3.9  UART
      10. 4.3.10 McSPI
      11. 4.3.11 QSPI
      12. 4.3.12 McASP
      13. 4.3.13 USB
      14. 4.3.14 SATA
      15. 4.3.15 PCIe
      16. 4.3.16 DCAN and MCAN
      17. 4.3.17 GMAC_SW
      18. 4.3.18 MLB
      19. 4.3.19 eMMC/SD/SDIO
      20. 4.3.20 GPIO
      21. 4.3.21 KBD
      22. 4.3.22 PWM
      23. 4.3.23 ATL
      24. 4.3.24 Test Interfaces
      25. 4.3.25 System and Miscellaneous
        1. 4.3.25.1 Sysboot
        2. 4.3.25.2 PRCM
        3. 4.3.25.3 RTC
        4. 4.3.25.4 SDMA
        5. 4.3.25.5 INTC
        6. 4.3.25.6 Observability
        7. 4.3.25.7 Power Supplies
    4. 4.4 Pin Multiplexing
    5. 4.5 Connections for Unused Pins
  5. 5Specifications
    1. 5.1  Absolute Maximum Ratings
    2. 5.2  ESD Ratings
    3. 5.3  Power-On Hours (POH)
    4. 5.4  Recommended Operating Conditions
    5. 5.5  Operating Performance Points
      1. 5.5.1 AVS and ABB Requirements
      2. 5.5.2 Voltage And Core Clock Specifications
      3. 5.5.3 Maximum Supported Frequency
    6. 5.6  Power Consumption Summary
    7. 5.7  Electrical Characteristics
      1. Table 5-6  LVCMOS DDR DC Electrical Characteristics
      2. Table 5-7  Dual Voltage LVCMOS I2C DC Electrical Characteristics
      3. Table 5-8  IQ1833 Buffers DC Electrical Characteristics
      4. Table 5-9  IHHV1833 Buffers DC Electrical Characteristics
      5. Table 5-10 LVCMOS OSC Buffers DC Electrical Characteristics
      6. Table 5-11 BMLB18 Buffers DC Electrical Characteristics
      7. Table 5-12 BC1833IHHV Buffers DC Electrical Characteristics
      8. Table 5-13 Dual Voltage SDIO1833 DC Electrical Characteristics
      9. Table 5-14 Dual Voltage LVCMOS DC Electrical Characteristics
      10. 5.7.1      HDMIPHY DC Electrical Characteristics
      11. 5.7.2      USBPHY DC Electrical Characteristics
      12. 5.7.3      SATAPHY DC Electrical Characteristics
      13. 5.7.4      PCIEPHY DC Electrical Characteristics
    8. 5.8  VPP Specifications for One-Time Programmable (OTP) eFuses
      1. Table 5-15 Recommended Operating Conditions for OTP eFuse Programming
      2. 5.8.1      Hardware Requirements
      3. 5.8.2      Programming Sequence
      4. 5.8.3      Impact to Your Hardware Warranty
    9. 5.9  Thermal Resistance Characteristics
      1. 5.9.1 Package Thermal Characteristics
    10. 5.10 Timing Requirements and Switching Characteristics
      1. 5.10.1 Timing Parameters and Information
        1. 5.10.1.1 Parameter Information
          1. 5.10.1.1.1 1.8V and 3.3V Signal Transition Levels
          2. 5.10.1.1.2 1.8V and 3.3V Signal Transition Rates
          3. 5.10.1.1.3 Timing Parameters and Board Routing Analysis
      2. 5.10.2 Interface Clock Specifications
        1. 5.10.2.1 Interface Clock Terminology
        2. 5.10.2.2 Interface Clock Frequency
      3. 5.10.3 Power Supply Sequences
      4. 5.10.4 Clock Specifications
        1. 5.10.4.1 Input Clocks / Oscillators
          1. 5.10.4.1.1 OSC0 External Crystal
          2. 5.10.4.1.2 OSC0 Input Clock
          3. 5.10.4.1.3 Auxiliary Oscillator OSC1 Input Clock
            1. 5.10.4.1.3.1 OSC1 External Crystal
            2. 5.10.4.1.3.2 OSC1 Input Clock
          4. 5.10.4.1.4 RTC Oscillator Input Clock
            1. 5.10.4.1.4.1 RTC Oscillator External Crystal
            2. 5.10.4.1.4.2 RTC Oscillator Input Clock
        2. 5.10.4.2 RC On-die Oscillator Clock
        3. 5.10.4.3 Output Clocks
        4. 5.10.4.4 DPLLs, DLLs
          1. 5.10.4.4.1 DPLL Characteristics
          2. 5.10.4.4.2 DLL Characteristics
          3. 5.10.4.4.3 DPLL and DLL Noise Isolation
      5. 5.10.5 Recommended Clock and Control Signal Transition Behavior
      6. 5.10.6 Peripherals
        1. 5.10.6.1  Timing Test Conditions
        2. 5.10.6.2  Virtual and Manual I/O Timing Modes
        3. 5.10.6.3  VIP
        4. 5.10.6.4  DSS
        5. 5.10.6.5  HDMI
        6. 5.10.6.6  EMIF
        7. 5.10.6.7  GPMC
          1. 5.10.6.7.1 GPMC/NOR Flash Interface Synchronous Timing
          2. 5.10.6.7.2 GPMC/NOR Flash Interface Asynchronous Timing
          3. 5.10.6.7.3 GPMC/NAND Flash Interface Asynchronous Timing
        8. 5.10.6.8  Timers
        9. 5.10.6.9  I2C
          1. Table 5-64 Timing Requirements for I2C Input Timings
          2. Table 5-65 Timing Requirements for I2C HS-Mode (I2C3/4/5 Only)
          3. Table 5-66 Switching Characteristics Over Recommended Operating Conditions for I2C Output Timings
        10. 5.10.6.10 HDQ1W
          1. 5.10.6.10.1 HDQ / 1-Wire — HDQ Mode
          2. 5.10.6.10.2 HDQ/1-Wire—1-Wire Mode
        11. 5.10.6.11 UART
          1. Table 5-71 Timing Requirements for UART
          2. Table 5-72 Switching Characteristics Over Recommended Operating Conditions for UART
        12. 5.10.6.12 McSPI
        13. 5.10.6.13 QSPI
        14. 5.10.6.14 McASP
          1. Table 5-79 Timing Requirements for McASP1
          2. Table 5-80 Timing Requirements for McASP2
          3. Table 5-81 Timing Requirements for McASP3/4/5/6/7/8
          4. Table 5-82 Switching Characteristics Over Recommended Operating Conditions for McASP1
          5. Table 5-83 Switching Characteristics Over Recommended Operating Conditions for McASP2
          6. Table 5-84 Switching Characteristics Over Recommended Operating Conditions for McASP3/4/5/6/7/8
        15. 5.10.6.15 USB
          1. 5.10.6.15.1 USB1 DRD PHY
          2. 5.10.6.15.2 USB2 PHY
          3. 5.10.6.15.3 USB3 and USB4 DRD ULPI—SDR—Slave Mode—12-pin Mode
        16. 5.10.6.16 SATA
        17. 5.10.6.17 PCIe
        18. 5.10.6.18 CAN
          1. 5.10.6.18.1 DCAN
          2. 5.10.6.18.2 MCAN-FD
          3. Table 5-99  Timing Requirements for CANx Receive
          4. Table 5-100 Switching Characteristics Over Recommended Operating Conditions for CANx Transmit
        19. 5.10.6.19 GMAC_SW
          1. 5.10.6.19.1 GMAC MII Timings
            1. Table 5-101 Timing Requirements for miin_rxclk - MII Operation
            2. Table 5-102 Timing Requirements for miin_txclk - MII Operation
            3. Table 5-103 Timing Requirements for GMAC MIIn Receive 10/100 Mbit/s
            4. Table 5-104 Switching Characteristics Over Recommended Operating Conditions for GMAC MIIn Transmit 10/100 Mbits/s
          2. 5.10.6.19.2 GMAC MDIO Interface Timings
          3. 5.10.6.19.3 GMAC RMII Timings
            1. Table 5-109 Timing Requirements for GMAC REF_CLK - RMII Operation
            2. Table 5-110 Timing Requirements for GMAC RMIIn Receive
            3. Table 5-111 Switching Characteristics Over Recommended Operating Conditions for GMAC REF_CLK - RMII Operation
            4. Table 5-112 Switching Characteristics Over Recommended Operating Conditions for GMAC RMIIn Transmit 10/100 Mbits/s
          4. 5.10.6.19.4 GMAC RGMII Timings
            1. Table 5-116 Timing Requirements for rgmiin_rxc - RGMIIn Operation
            2. Table 5-117 Timing Requirements for GMAC RGMIIn Input Receive for 10/100/1000 Mbps
            3. Table 5-118 Switching Characteristics Over Recommended Operating Conditions for rgmiin_txctl - RGMIIn Operation for 10/100/1000 Mbit/s
            4. Table 5-119 Switching Characteristics for GMAC RGMIIn Output Transmit for 10/100/1000 Mbps
        20. 5.10.6.20 MLB
        21. 5.10.6.21 eMMC/SD/SDIO
          1. 5.10.6.21.1 MMC1—SD Card Interface
            1. 5.10.6.21.1.1 Default speed, 4-bit data, SDR, half-cycle
            2. 5.10.6.21.1.2 High speed, 4-bit data, SDR, half-cycle
            3. 5.10.6.21.1.3 SDR12, 4-bit data, half-cycle
            4. 5.10.6.21.1.4 SDR25, 4-bit data, half-cycle
            5. 5.10.6.21.1.5 UHS-I SDR50, 4-bit data, half-cycle
            6. 5.10.6.21.1.6 UHS-I SDR104, 4-bit data, half-cycle
            7. 5.10.6.21.1.7 UHS-I DDR50, 4-bit data
          2. 5.10.6.21.2 MMC2 — eMMC
            1. 5.10.6.21.2.1 Standard JC64 SDR, 8-bit data, half cycle
            2. 5.10.6.21.2.2 High-Speed JC64 SDR, 8-bit data, half cycle
            3. 5.10.6.21.2.3 High-Speed HS200 JC64 SDR, 8-bit data, half cycle
            4. 5.10.6.21.2.4 High-Speed JC64 DDR, 8-bit data
          3. 5.10.6.21.3 MMC3 and MMC4—SDIO/SD
            1. 5.10.6.21.3.1 MMC3 and MMC4, SD Default Speed
            2. 5.10.6.21.3.2 MMC3 and MMC4, SD High Speed
            3. 5.10.6.21.3.3 MMC3 and MMC4, SD and SDIO SDR12 Mode
            4. 5.10.6.21.3.4 MMC3 and MMC4, SD SDR25 Mode
            5. 5.10.6.21.3.5 MMC3 SDIO High-Speed UHS-I SDR50 Mode, Half Cycle
        22. 5.10.6.22 GPIO
        23. 5.10.6.23 ATL
          1. 5.10.6.23.1 ATL Electrical Data/Timing
            1. Table 5-175 Switching Characteristics Over Recommended Operating Conditions for ATL_CLKOUTx
        24. 5.10.6.24 System and Miscellaneous Interfaces
      7. 5.10.7 Emulation and Debug Subsystem
        1. 5.10.7.1 JTAG
          1. 5.10.7.1.1 JTAG Electrical Data/Timing
            1. Table 5-176 Timing Requirements for IEEE 1149.1 JTAG
            2. Table 5-177 Switching Characteristics Over Recommended Operating Conditions for IEEE 1149.1 JTAG
            3. Table 5-178 Timing Requirements for IEEE 1149.1 JTAG With RTCK
            4. Table 5-179 Switching Characteristics Over Recommended Operating Conditions for IEEE 1149.1 JTAG With RTCK
        2. 5.10.7.2 TPIU
          1. 5.10.7.2.1 TPIU PLL DDR Mode
  6. 6Detailed Description
    1. 6.1  Description
    2. 6.2  Functional Block Diagram
    3. 6.3  MPU
    4. 6.4  DSP Subsystem
    5. 6.5  ISS
    6. 6.6  IVA
    7. 6.7  EVE
    8. 6.8  IPU
    9. 6.9  VPE
    10. 6.10 GPU
    11. 6.11 ATL Overview
    12. 6.12 Memory Subsystem
      1. 6.12.1 EMIF
      2. 6.12.2 GPMC
      3. 6.12.3 ELM
      4. 6.12.4 OCMC
    13. 6.13 Interprocessor Communication
      1. 6.13.1 Mailbox
      2. 6.13.2 Spinlock
    14. 6.14 Interrupt Controller
    15. 6.15 EDMA
    16. 6.16 Peripherals
      1. 6.16.1  VIP
      2. 6.16.2  DSS
      3. 6.16.3  Timers
      4. 6.16.4  I2C
      5. 6.16.5  HDQ1W
      6. 6.16.6  UART
        1. 6.16.6.1 UART Features
        2. 6.16.6.2 IrDA Features
        3. 6.16.6.3 CIR Features
      7. 6.16.7  McSPI
      8. 6.16.8  QSPI
      9. 6.16.9  McASP
      10. 6.16.10 USB
      11. 6.16.11 SATA
      12. 6.16.12 PCIe
      13. 6.16.13 CAN
      14. 6.16.14 GMAC_SW
      15. 6.16.15 MLB
      16. 6.16.16 eMMC/SD/SDIO
      17. 6.16.17 GPIO
      18. 6.16.18 ePWM
      19. 6.16.19 eCAP
      20. 6.16.20 eQEP
    17. 6.17 On-Chip Debug
  7. 7Applications, Implementation, and Layout
    1. 7.1 Introduction
      1. 7.1.1 Initial Requirements and Guidelines
    2. 7.2 Power Optimizations
      1. 7.2.1 Step 1: PCB Stack-up
      2. 7.2.2 Step 2: Physical Placement
      3. 7.2.3 Step 3: Static Analysis
        1. 7.2.3.1 PDN Resistance and IR Drop
      4. 7.2.4 Step 4: Frequency Analysis
      5. 7.2.5 System ESD Generic Guidelines
        1. 7.2.5.1 System ESD Generic PCB Guideline
        2. 7.2.5.2 Miscellaneous EMC Guidelines to Mitigate ESD Immunity
      6. 7.2.6 EMI / EMC Issues Prevention
        1. 7.2.6.1 Signal Bandwidth
        2. 7.2.6.2 Signal Routing
          1. 7.2.6.2.1 Signal Routing—Sensitive Signals and Shielding
          2. 7.2.6.2.2 Signal Routing—Outer Layer Routing
        3. 7.2.6.3 Ground Guidelines
          1. 7.2.6.3.1 PCB Outer Layers
          2. 7.2.6.3.2 Metallic Frames
          3. 7.2.6.3.3 Connectors
          4. 7.2.6.3.4 Guard Ring on PCB Edges
          5. 7.2.6.3.5 Analog and Digital Ground
    3. 7.3 Core Power Domains
      1. 7.3.1 General Constraints and Theory
      2. 7.3.2 Voltage Decoupling
      3. 7.3.3 Static PDN Analysis
      4. 7.3.4 Dynamic PDN Analysis
      5. 7.3.5 Power Supply Mapping
      6. 7.3.6 DPLL Voltage Requirement
      7. 7.3.7 Loss of Input Power Event
      8. 7.3.8 Example PCB Design
        1. 7.3.8.1 Example Stack-up
        2. 7.3.8.2 vdd_mpu Example Analysis
    4. 7.4 Single-Ended Interfaces
      1. 7.4.1 General Routing Guidelines
      2. 7.4.2 QSPI Board Design and Layout Guidelines
    5. 7.5 Differential Interfaces
      1. 7.5.1 General Routing Guidelines
      2. 7.5.2 USB 2.0 Board Design and Layout Guidelines
        1. 7.5.2.1 Background
        2. 7.5.2.2 USB PHY Layout Guide
          1. 7.5.2.2.1 General Routing and Placement
          2. 7.5.2.2.2 Specific Guidelines for USB PHY Layout
            1. 7.5.2.2.2.1  Analog, PLL, and Digital Power Supply Filtering
            2. 7.5.2.2.2.2  Analog, Digital, and PLL Partitioning
            3. 7.5.2.2.2.3  Board Stackup
            4. 7.5.2.2.2.4  Cable Connector Socket
            5. 7.5.2.2.2.5  Clock Routings
            6. 7.5.2.2.2.6  Crystals/Oscillator
            7. 7.5.2.2.2.7  DP/DM Trace
            8. 7.5.2.2.2.8  DP/DM Vias
            9. 7.5.2.2.2.9  Image Planes
            10. 7.5.2.2.2.10 JTAG Interface
            11. 7.5.2.2.2.11 Power Regulators
        3. 7.5.2.3 Electrostatic Discharge (ESD)
          1. 7.5.2.3.1 IEC ESD Stressing Test
            1. 7.5.2.3.1.1 Test Mode
            2. 7.5.2.3.1.2 Air Discharge Mode
            3. 7.5.2.3.1.3 Test Type
          2. 7.5.2.3.2 TI Component Level IEC ESD Test
          3. 7.5.2.3.3 Construction of a Custom USB Connector
          4. 7.5.2.3.4 ESD Protection System Design Consideration
        4. 7.5.2.4 References
      3. 7.5.3 USB 3.0 Board Design and Layout Guidelines
        1. 7.5.3.1 USB 3.0 interface introduction
        2. 7.5.3.2 USB 3.0 General routing rules
      4. 7.5.4 HDMI Board Design and Layout Guidelines
        1. 7.5.4.1 HDMI Interface Schematic
        2. 7.5.4.2 TMDS General Routing Guidelines
        3. 7.5.4.3 TPD5S115
        4. 7.5.4.4 HDMI ESD Protection Device (Required)
        5. 7.5.4.5 PCB Stackup Specifications
        6. 7.5.4.6 Grounding
      5. 7.5.5 SATA Board Design and Layout Guidelines
        1. 7.5.5.1 SATA Interface Schematic
        2. 7.5.5.2 Compatible SATA Components and Modes
        3. 7.5.5.3 PCB Stackup Specifications
        4. 7.5.5.4 Routing Specifications
      6. 7.5.6 PCIe Board Design and Layout Guidelines
        1. 7.5.6.1 PCIe Connections and Interface Compliance
          1. 7.5.6.1.1 Coupling Capacitors
          2. 7.5.6.1.2 Polarity Inversion
        2. 7.5.6.2 Non-standard PCIe connections
          1. 7.5.6.2.1 PCB Stackup Specifications
          2. 7.5.6.2.2 Routing Specifications
            1. 7.5.6.2.2.1 Impedance
            2. 7.5.6.2.2.2 Differential Coupling
            3. 7.5.6.2.2.3 Pair Length Matching
        3. 7.5.6.3 LJCB_REFN/P Connections
    6. 7.6 Clock Routing Guidelines
      1. 7.6.1 32-kHz Oscillator Routing
      2. 7.6.2 Oscillator Ground Connection
    7. 7.7 DDR2/DDR3 Board Design and Layout Guidelines
      1. 7.7.1 DDR2/DDR3 General Board Layout Guidelines
      2. 7.7.2 DDR2 Board Design and Layout Guidelines
        1. 7.7.2.1 Board Designs
        2. 7.7.2.2 DDR2 Interface
          1. 7.7.2.2.1  DDR2 Interface Schematic
          2. 7.7.2.2.2  Compatible JEDEC DDR2 Devices
          3. 7.7.2.2.3  PCB Stackup
          4. 7.7.2.2.4  Placement
          5. 7.7.2.2.5  DDR2 Keepout Region
          6. 7.7.2.2.6  Bulk Bypass Capacitors
          7. 7.7.2.2.7  High-Speed Bypass Capacitors
          8. 7.7.2.2.8  Net Classes
          9. 7.7.2.2.9  DDR2 Signal Termination
          10. 7.7.2.2.10 VREF Routing
        3. 7.7.2.3 DDR2 CK and ADDR_CTRL Routing
      3. 7.7.3 DDR3 Board Design and Layout Guidelines
        1. 7.7.3.1  Board Designs
        2. 7.7.3.2  DDR3 EMIF
        3. 7.7.3.3  DDR3 Device Combinations
        4. 7.7.3.4  DDR3 Interface Schematic
          1. 7.7.3.4.1 32-Bit DDR3 Interface
          2. 7.7.3.4.2 16-Bit DDR3 Interface
        5. 7.7.3.5  Compatible JEDEC DDR3 Devices
        6. 7.7.3.6  PCB Stackup
        7. 7.7.3.7  Placement
        8. 7.7.3.8  DDR3 Keepout Region
        9. 7.7.3.9  Bulk Bypass Capacitors
        10. 7.7.3.10 High-Speed Bypass Capacitors
          1. 7.7.3.10.1 Return Current Bypass Capacitors
        11. 7.7.3.11 Net Classes
        12. 7.7.3.12 DDR3 Signal Termination
        13. 7.7.3.13 VREF_DDR Routing
        14. 7.7.3.14 VTT
        15. 7.7.3.15 CK and ADDR_CTRL Topologies and Routing Definition
          1. 7.7.3.15.1 Four DDR3 Devices
            1. 7.7.3.15.1.1 CK and ADDR_CTRL Topologies, Four DDR3 Devices
            2. 7.7.3.15.1.2 CK and ADDR_CTRL Routing, Four DDR3 Devices
          2. 7.7.3.15.2 Two DDR3 Devices
            1. 7.7.3.15.2.1 CK and ADDR_CTRL Topologies, Two DDR3 Devices
            2. 7.7.3.15.2.2 CK and ADDR_CTRL Routing, Two DDR3 Devices
          3. 7.7.3.15.3 One DDR3 Device
            1. 7.7.3.15.3.1 CK and ADDR_CTRL Topologies, One DDR3 Device
            2. 7.7.3.15.3.2 CK and ADDR/CTRL Routing, One DDR3 Device
        16. 7.7.3.16 Data Topologies and Routing Definition
          1. 7.7.3.16.1 DQS and DQ/DM Topologies, Any Number of Allowed DDR3 Devices
          2. 7.7.3.16.2 DQS and DQ/DM Routing, Any Number of Allowed DDR3 Devices
        17. 7.7.3.17 Routing Specification
          1. 7.7.3.17.1 CK and ADDR_CTRL Routing Specification
          2. 7.7.3.17.2 DQS and DQ Routing Specification
  8. 8Device and Documentation Support
    1. 8.1  Device Nomenclature
      1. 8.1.1 Standard Package Symbolization
      2. 8.1.2 Device Naming Convention
    2. 8.2  Tools and Software
    3. 8.3  Documentation Support
      1. 8.3.1 FCC Warning
      2. 8.3.2 Information About Cautions and Warnings
    4. 8.4  Receiving Notification of Documentation Updates
    5. 8.5  Related Links
    6. 8.6  Community Resources
    7. 8.7  Trademarks
    8. 8.8  Electrostatic Discharge Caution
    9. 8.9  Export Control Notice
    10. 8.10 Glossary
  9. 9Mechanical Packaging and Orderable Information
    1. 9.1 Mechanical Data

パッケージ・オプション

デバイスごとのパッケージ図は、PDF版データシートをご参照ください。

メカニカル・データ（パッケージ｜ピン）
  • ABZ|760
サーマルパッド・メカニカル・データ
発注情報

6.15 EDMA

The primary purpose of the Enhanced Direct Memory Access (EDMA) controller is to service user-programmed data transfers between two memory-mapped slave endpoints on the device.

Typical usage of the EDMA controller includes:

  • Servicing software-driven paging transfers (for example, data movement between external memory [such as SDRAM] and internal memory [such as DSP L2 SRAM])
  • Servicing event-driven peripherals, such as a serial port
  • Performing sorting or sub-frame extraction of various data structures
  • Offloading data transfers from the main device CPUs, such as the C66x DSP CorePac or the Arm CorePac

The EDMA controller consists of two major principle blocks:

  • EDMA Channel Controller
  • EDMA Transfer Controller(s)

The EDMA Channel Controller (EDMACC) serves as the user interface for the EDMA controller. The EDMACC includes parameter RAM (PaRAM), channel control registers, and interrupt control registers. The EDMACC serves to prioritize incoming software requests or events from peripherals and submits transfer requests (TR) to the EDMA transfer controller.

The EDMA Transfer Controller (EDMATC) is responsible for data movement. The transfer request packets (TRP) submitted by the EDMACC contain the transfer context, based on which the transfer controller issues read/write commands to the source and destination addresses programmed for a given transfer.

There are two EDMA controllers present on this device:

  • EDMA_0, integrating:
    • 1 Channel Controller, referenced as: EDMACC_0
    • 2 Transfer Controllers, referenced as: EDMACC_0_TC_0 (or EDMATC_0) and EDMACC_0_TC_1 (or EDMATC_1)
  • EDMA_1, integrating:
    • 1 Channel Controller, referenced as: EDMACC_1
    • 2 Transfer Controllers, referenced as: EDMACC_1_TC_0 (or EDMATC_2) and EDMACC_1_TC_1 (or EDMATC_3)

The two EDMA channel controllers (EDMACC_0 and EDMACC_1) are functionally identical. For simplification, the unified name EDMACC shall be regularly used throughout this chapter when referring to EDMA Channel Controllers functionality and features.

The four EDMA transfer controllers (EDMACC_0_TC_0, EDMACC_0_TC_1, EDMACC_1_TC_0 and EDMACC_1_TC_1) are functionally identical. For simplification, the unified name EDMATC shall be regularly used throughout this chapter when referring to EDMA Transfer Controllers functionality and features.

Each EDMACC has the following features:

  • Fully orthogonal transfer description
    • 3 transfer dimensions:
      • Array (multiple bytes)
      • Frame (multiple arrays)
      • Block (multiple frames)
    • Single event can trigger transfer of array, frame, or entire block
    • Independent indexes on source and destination
  • Flexible transfer definition
    • Increment or constant addressing modes
    • Linking mechanism allows automatic PaRAM set update
    • Chaining allows multiple transfers to execute with one event
  • 64 DMA channels
    • Channels triggered by either:
      • Event synchronization
      • Manual synchronization (CPU write to event set register)
      • Chain synchronization (completion of one transfer triggers another transfer)
    • Support for programmable DMA Channel to PaRAM mapping
  • 8 Quick DMA (QDMA) channels
    • QDMA channels are triggered automatically upon writing to PaRAM set entry
    • Support for programmable QDMA channel to PaRAM mapping
  • 512 PaRAM sets
    • Each PaRAM set can be used for a DMA channel, QDMA channel, or link set
  • 2 transfer controllers/event queues
    • 16 event entries per event queue
  • Interrupt generation based on:
    • Transfer completion
    • Error conditions
  • Debug visibility
    • Queue water marking/threshold
    • Error and status recording to facilitate debug
  • Memory protection support
    • Proxied memory protection for TR submission
    • Active memory protection for accesses to PaRAM and registers

Each EDMATC has the following features:

  • Supports 2-dimensional (2D) transfers with independent indexes on source and destination (EDMACC manages the 3rd dimension)
  • Up to 4 in-flight transfer requests (TR)
  • Programmable priority levels
  • Support for increment or constant addressing mode transfers
  • Interrupt and error support
  • Supports only little-endian operation in this device
  • Memory mapped register (MMR) bit fields are fixed position in 32-bit MMR

For more information, see section Enhanced DMA in chapter DMA Controllers of the Device TRM.