SPRS982H December   2016  – December 2019 AM5746 , AM5748 , AM5749

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 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  Timer
      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 PRU-ICSS
      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 RTCSS
        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) Limits
      1. Table 5-1 Power-On Hours (POH) Limits
    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 5-7  LVCMOS DDR DC Electrical Characteristics
      2. Table 5-8  Dual Voltage LVCMOS I2C DC Electrical Characteristics
      3. Table 5-9  IQ1833 Buffers DC Electrical Characteristics
      4. Table 5-10 IHHV1833 Buffers DC Electrical Characteristics
      5. Table 5-11 LVCMOS OSC Buffers DC Electrical Characteristics
      6. Table 5-12 BC1833IHHV Buffers DC Electrical Characteristics
      7. Table 5-13 Dual Voltage SDIO1833 DC Electrical Characteristics
      8. Table 5-14 Dual Voltage LVCMOS DC Electrical Characteristics
      9. 5.7.1      HDMIPHY DC Electrical Characteristics
      10. 5.7.2      USBPHY DC Electrical Characteristics
      11. 5.7.3      SATAPHY DC Electrical Characteristics
      12. 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 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
      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  I2C
          1. Table 5-65 Timing Requirements for I2C Input Timings
          2. Table 5-66 Timing Requirements for I2C HS-Mode (I2C3/4/5 Only)
          3. Table 5-67 Switching Characteristics Over Recommended Operating Conditions for I2C Output Timings
        9. 5.10.6.9  HDQ1W
          1. 5.10.6.9.1 HDQ / 1-Wire — HDQ Mode
          2. 5.10.6.9.2 HDQ/1-Wire—1-Wire Mode
        10. 5.10.6.10 UART
          1. Table 5-72 Timing Requirements for UART
          2. Table 5-73 Switching Characteristics Over Recommended Operating Conditions for UART
        11. 5.10.6.11 McSPI
        12. 5.10.6.12 QSPI
        13. 5.10.6.13 McASP
          1. Table 5-80 Timing Requirements for McASP1
          2. Table 5-81 Timing Requirements for McASP2
          3. Table 5-82 Timing Requirements for McASP3/4/5/6/7/8
          4. Table 5-83 Switching Characteristics Over Recommended Operating Conditions for McASP1
          5. Table 5-84 Switching Characteristics Over Recommended Operating Conditions for McASP2
          6. Table 5-85 Switching Characteristics Over Recommended Operating Conditions for McASP3/4/5/6/7/8
        14. 5.10.6.14 USB
          1. 5.10.6.14.1 USB1 DRD PHY
          2. 5.10.6.14.2 USB2 PHY
        15. 5.10.6.15 SATA
        16. 5.10.6.16 PCIe
        17. 5.10.6.17 CAN
          1. 5.10.6.17.1 DCAN
          2. 5.10.6.17.2 MCAN-FD
          3. Table 5-97  Timing Requirements for CANx Receive
          4. Table 5-98  Switching Characteristics Over Recommended Operating Conditions for CANx Transmit
        18. 5.10.6.18 GMAC_SW
          1. 5.10.6.18.1 GMAC MII Timings
            1. Table 5-99  Timing Requirements for miin_rxclk - MII Operation
            2. Table 5-100 Timing Requirements for miin_txclk - MII Operation
            3. Table 5-101 Timing Requirements for GMAC MIIn Receive 10/100 Mbit/s
            4. Table 5-102 Switching Characteristics Over Recommended Operating Conditions for GMAC MIIn Transmit 10/100 Mbits/s
          2. 5.10.6.18.2 GMAC MDIO Interface Timings
          3. 5.10.6.18.3 GMAC RMII Timings
            1. Table 5-107 Timing Requirements for GMAC REF_CLK - RMII Operation
            2. Table 5-108 Timing Requirements for GMAC RMIIn Receive
            3. Table 5-109 Switching Characteristics Over Recommended Operating Conditions for GMAC REF_CLK - RMII Operation
            4. Table 5-110 Switching Characteristics Over Recommended Operating Conditions for GMAC RMIIn Transmit 10/100 Mbits/s
          4. 5.10.6.18.4 GMAC RGMII Timings
            1. Table 5-114 Timing Requirements for rgmiin_rxc - RGMIIn Operation
            2. Table 5-115 Timing Requirements for GMAC RGMIIn Input Receive for 10/100/1000 Mbps
            3. Table 5-116 Switching Characteristics Over Recommended Operating Conditions for rgmiin_txctl - RGMIIn Operation for 10/100/1000 Mbit/s
            4. Table 5-117 Switching Characteristics for GMAC RGMIIn Output Transmit for 10/100/1000 Mbps
        19. 5.10.6.19 eMMC/SD/SDIO
          1. 5.10.6.19.1 MMC1—SD Card Interface
            1. 5.10.6.19.1.1 Default speed, 4-bit data, SDR, half-cycle
            2. 5.10.6.19.1.2 High speed, 4-bit data, SDR, half-cycle
            3. 5.10.6.19.1.3 SDR12, 4-bit data, half-cycle
            4. 5.10.6.19.1.4 SDR25, 4-bit data, half-cycle
            5. 5.10.6.19.1.5 UHS-I SDR50, 4-bit data, half-cycle
            6. 5.10.6.19.1.6 UHS-I SDR104, 4-bit data, half-cycle
            7. 5.10.6.19.1.7 UHS-I DDR50, 4-bit data
          2. 5.10.6.19.2 MMC2 — eMMC
            1. 5.10.6.19.2.1 Standard JC64 SDR, 8-bit data, half cycle
            2. 5.10.6.19.2.2 High Speed JC64 SDR, 8-bit data, half cycle
            3. 5.10.6.19.2.3 High Speed HS200 JC64 SDR, 8-bit data, half cycle
            4. 5.10.6.19.2.4 High Speed JC64 DDR, 8-bit data
          3. 5.10.6.19.3 MMC3 and MMC4—SDIO/SD
            1. 5.10.6.19.3.1 MMC3 and MMC4, SD Default Speed
            2. 5.10.6.19.3.2 MMC3 and MMC4, SD High Speed
            3. 5.10.6.19.3.3 MMC3 and MMC4, SD and SDIO SDR12 Mode
            4. 5.10.6.19.3.4 MMC3 and MMC4, SD SDR25 Mode
            5. 5.10.6.19.3.5 MMC3 SDIO High Speed UHS-I SDR50 Mode, Half Cycle
        20. 5.10.6.20 PRU-ICSS
          1. 5.10.6.20.1 Programmable Real-Time Unit (PRU-ICSS PRU)
            1. 5.10.6.20.1.1 PRU-ICSS PRU Direct Input/Output Mode Electrical Data and Timing
              1. Table 5-166 PRU-ICSS PRU Timing Requirements - Direct Input Mode
              2. Table 5-167 PRU-ICSS PRU Switching Requirements – Direct Output Mode
            2. 5.10.6.20.1.2 PRU-ICSS PRU Parallel Capture Mode Electrical Data and Timing
              1. Table 5-168 PRU-ICSS PRU Timing Requirements - Parallel Capture Mode
            3. 5.10.6.20.1.3 PRU-ICSS PRU Shift Mode Electrical Data and Timing
              1. Table 5-169 PRU-ICSS PRU Timing Requirements – Shift In Mode
              2. Table 5-170 PRU-ICSS PRU Switching Requirements - Shift Out Mode
            4. 5.10.6.20.1.4 PRU-ICSS PRU Sigma Delta and EnDAT Modes
              1. Table 5-171 PRU-ICSS PRU Timing Requirements - Sigma Delta Mode
              2. Table 5-172 PRU-ICSS PRU Timing Requirements - EnDAT Mode
              3. Table 5-173 PRU-ICSS PRU Switching Requirements - EnDAT Mode
          2. 5.10.6.20.2 PRU-ICSS EtherCAT (PRU-ICSS ECAT)
            1. 5.10.6.20.2.1 PRU-ICSS ECAT Electrical Data and Timing
              1. Table 5-174 PRU-ICSS ECAT Timing Requirements – Input Validated With LATCH_IN
              2. Table 5-175 PRU-ICSS ECAT Timing Requirements – Input Validated With SYNCx
              3. Table 5-176 PRU-ICSS ECAT Timing Requirements – Input Validated With Start of Frame (SOF)
              4. Table 5-177 PRU-ICSS ECAT Timing Requirements - LATCHx_IN
              5. Table 5-178 PRU-ICSS ECAT Switching Requirements - Digital IOs
          3. 5.10.6.20.3 PRU-ICSS MII_RT and Switch
            1. 5.10.6.20.3.1 PRU-ICSS MDIO Electrical Data and Timing
              1. Table 5-179 PRU-ICSS MDIO Timing Requirements – MDIO_DATA
              2. Table 5-180 PRU-ICSS MDIO Switching Characteristics - MDIO_CLK
              3. Table 5-181 PRU-ICSS MDIO Switching Characteristics – MDIO_DATA
            2. 5.10.6.20.3.2 PRU-ICSS MII_RT Electrical Data and Timing
              1. Table 5-182 PRU-ICSS MII_RT Timing Requirements – MII[x]_RXCLK
              2. Table 5-183 PRU-ICSS MII_RT Timing Requirements - MII[x]_TXCLK
              3. Table 5-184 PRU-ICSS MII_RT Timing Requirements - MII_RXD[3:0], MII_RXDV, and MII_RXER
              4. Table 5-185 PRU-ICSS MII_RT Switching Characteristics - MII_TXD[3:0] and MII_TXEN
          4. 5.10.6.20.4 PRU-ICSS Universal Asynchronous Receiver Transmitter (PRU-ICSS UART)
            1. Table 5-186 Timing Requirements for PRU-ICSS UART Receive
            2. Table 5-187 Switching Characteristics Over Recommended Operating Conditions for PRU-ICSS UART Transmit
          5. 5.10.6.20.5 PRU-ICSS IOSETs
          6. 5.10.6.20.6 PRU-ICSS Manual Functional Mapping
        21. 5.10.6.21 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 5-210 Timing Requirements for IEEE 1149.1 JTAG
            2. Table 5-211 Switching Characteristics Over Recommended Operating Conditions for IEEE 1149.1 JTAG
            3. Table 5-212 Timing Requirements for IEEE 1149.1 JTAG With RTCK
            4. Table 5-213 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 Overview
    2. 6.2 Processor Subsystems
      1. 6.2.1 MPU
      2. 6.2.2 DSP Subsystem
      3. 6.2.3 IPU
      4. 6.2.4 Interrupt Controller
      5. 6.2.5 VPE
    3. 6.3 Accelerators and Coprocessors
      1. 6.3.1 IVA
      2. 6.3.2 GPU
      3. 6.3.3 PRU-ICSS
      4. 6.3.4 EVE
    4. 6.4 Other Subsystems
      1. 6.4.1 Memory Subsystem
        1. 6.4.1.1 EMIF
        2. 6.4.1.2 GPMC
        3. 6.4.1.3 ELM
        4. 6.4.1.4 OCMC
        5. 6.4.1.5 Interprocessor Communication
          1. 6.4.1.5.1 Mailbox
          2. 6.4.1.5.2 Spinlock
      2. 6.4.2 EDMA
      3. 6.4.3 Peripherals
        1. 6.4.3.1  VIP
        2. 6.4.3.2  DSS
        3. 6.4.3.3  Timers
        4. 6.4.3.4  I2C
        5. 6.4.3.5  HDQ1W
        6. 6.4.3.6  UART
          1. 6.4.3.6.1 UART Features
          2. 6.4.3.6.2 IrDA Features
          3. 6.4.3.6.3 CIR Features
        7. 6.4.3.7  McSPI
        8. 6.4.3.8  QSPI
        9. 6.4.3.9  McASP
        10. 6.4.3.10 USB
        11. 6.4.3.11 SATA
        12. 6.4.3.12 PCIe
        13. 6.4.3.13 CAN
          1. 6.4.3.13.1 DCAN
          2. 6.4.3.13.2 MCAN-FD
        14. 6.4.3.14 GMAC_SW
        15. 6.4.3.15 eMMC/SD/SDIO
        16. 6.4.3.16 GPIO
        17. 6.4.3.17 ePWM
        18. 6.4.3.18 eCAP
        19. 6.4.3.19 eQEP
      4. 6.4.4 On-Chip Debug
    5. 6.5 Identification
      1. 6.5.1 Revision Identification
      2. 6.5.2 Die Identification
      3. 6.5.3 JTAG Identification
      4. 6.5.4 ROM Code Identification
    6. 6.6 Boot Modes
      1. 6.6.1 Boot Mode List
      2. 6.6.2 Boot Mode Pin Usage
        1. 6.6.2.1 GPMC Configuration for XIP/NAND
        2. 6.6.2.2 System Clock Speed Selection
        3. 6.6.2.3 QSPI Redundant SBL Images Offset
      3. 6.6.3 Boot Mode Selection
        1. 6.6.3.1 Booting Device Order Selection
  7. 7Applications, Implementation, and Layout
    1. 7.1 Power Supply Mapping
    2. 7.2 DDR3 Board Design and Layout Guidelines
      1. 7.2.1 DDR3 General Board Layout Guidelines
      2. 7.2.2 DDR3 Board Design and Layout Guidelines
        1. 7.2.2.1  Board Designs
        2. 7.2.2.2  DDR3 EMIFs
        3. 7.2.2.3  DDR3 Device Combinations
        4. 7.2.2.4  DDR3 Interface Schematic
          1. 7.2.2.4.1 32-Bit DDR3 Interface
          2. 7.2.2.4.2 16-Bit DDR3 Interface
        5. 7.2.2.5  Compatible JEDEC DDR3 Devices
        6. 7.2.2.6  PCB Stackup
        7. 7.2.2.7  Placement
        8. 7.2.2.8  DDR3 Keepout Region
        9. 7.2.2.9  Bulk Bypass Capacitors
        10. 7.2.2.10 High Speed Bypass Capacitors
          1. 7.2.2.10.1 Return Current Bypass Capacitors
        11. 7.2.2.11 Net Classes
        12. 7.2.2.12 DDR3 Signal Termination
        13. 7.2.2.13 VREF_DDR Routing
        14. 7.2.2.14 VTT
        15. 7.2.2.15 CK and ADDR_CTRL Topologies and Routing Definition
          1. 7.2.2.15.1 Four DDR3 Devices
            1. 7.2.2.15.1.1 CK and ADDR_CTRL Topologies, Four DDR3 Devices
            2. 7.2.2.15.1.2 CK and ADDR_CTRL Routing, Four DDR3 Devices
          2. 7.2.2.15.2 Two DDR3 Devices
            1. 7.2.2.15.2.1 CK and ADDR_CTRL Topologies, Two DDR3 Devices
            2. 7.2.2.15.2.2 CK and ADDR_CTRL Routing, Two DDR3 Devices
          3. 7.2.2.15.3 One DDR3 Device
            1. 7.2.2.15.3.1 CK and ADDR_CTRL Topologies, One DDR3 Device
            2. 7.2.2.15.3.2 CK and ADDR/CTRL Routing, One DDR3 Device
        16. 7.2.2.16 Data Topologies and Routing Definition
          1. 7.2.2.16.1 DQS and DQ/DM Topologies, Any Number of Allowed DDR3 Devices
          2. 7.2.2.16.2 DQS and DQ/DM Routing, Any Number of Allowed DDR3 Devices
        17. 7.2.2.17 Routing Specification
          1. 7.2.2.17.1 CK and ADDR_CTRL Routing Specification
          2. 7.2.2.17.2 DQS and DQ Routing Specification
    3. 7.3 High Speed Differential Signal Routing Guidance
    4. 7.4 Power Distribution Network Implementation Guidance
    5. 7.5 Thermal Solution Guidance
    6. 7.6 Single-Ended Interfaces
      1. 7.6.1 General Routing Guidelines
      2. 7.6.2 QSPI Board Design and Layout Guidelines
    7. 7.7 LJCB_REFN/P Connections
    8. 7.8 Clock Routing Guidelines
      1. 7.8.1 32-kHz Oscillator Routing
      2. 7.8.2 Oscillator Ground Connection
  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
    4. 8.4 Related Links
    5. 8.5 Support Resources
    6. 8.6 Trademarks
    7. 8.7 Electrostatic Discharge Caution
    8. 8.8 Glossary
  9. 9Mechanical, Packaging, and Orderable Information
    1. 9.1 Packaging Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • ABZ|760
Thermal pad, mechanical data (Package|Pins)
Orderable Information

6.2.4 Interrupt Controller

The device has a large number of interrupts to service the needs of its many peripherals and subsystems. The MPU, DSP (×2), IPU (×2), and PRU-ICSS (×2) subsystems are capable of servicing these interrupts via their integrated interrupt controllers. In addition, each processor's interrupt controller is preceded by an Interrupt Controller Crossbar (IRQ_CROSSBAR) that provides flexibility in mapping the device interrupts to processor interrupt inputs. For more information about IRQ crossbar, see Control Module chapter in the device TRM.

Dual Cortex®-A15 MPU Subsystem Interrupt Controller (MPU_INTC)

The MPU_INTC module (also called Generalized Interrupt Controller [GIC]) is a single functional unit that is integrated in the Arm® Cortex-A15 multiprocessor core (MPCore) alongside Cortex-A15 processors. It provides:

  • 160 hardware interrupt inputs
  • Generation of interrupts by software
  • Prioritization of interrupts
  • Masking of any interrupts
  • Distribution of the interrupts to the target Cortex-A15 processor(s)
  • Tracking the status of interrupts

Each Cortex-A15 processor supports three main groups of interrupt sources, with each interrupt source having a unique ID:

  • Software Generated Interrupts (SGIs): SGIs are generated by writing to the Cortex-A15 Software Generated Interrupt Register (GICD_SGIR). A maximum of 16 SGIs (ID0–ID15) can be generated for each CPU interface. An SGI has edge-triggered properties. The software triggering of the interrupt is equivalent to the edge transition of the interrupt signal on a peripheral input.
  • Private Peripheral Interrupts (PPIs): A PPI is an interrupt generated by a peripheral that is specific to a single processor. Although interrupts ID16–ID31 are dedicated to PPIs in general, only seven PPIs are actually used for each CPU interface (ID25–ID31). Interrupts ID16–ID24 are reserved (not used).
  • Shared Peripheral Interrupts (SPIs): SPIs are triggered by events generated on associated interrupt input lines. In this device, the GIC is configured to support 160 SPIs corresponding to its external IRQS[159:0] signals.

For detailed information about this module and description of SGIs and PPIs, see the Arm Cortex-A15 MP Core Technical Reference Manual (available at infocenter.arm.com/help/index.jsp).

C66x DSP Subsystem Interrupt Controller (DSPx_INTC, where x = 1, 2)

There are two Digital Signal Processing (DSP) subsystems in the device - DSP1, and DSP2. Each DSP subsystem integrates an interrupt controller - DSPx_INTC, which interfaces the system events to the C66x core interrupt and exceptions inputs. It combines up to 128 interrupts into 12 prioritized interrupts presented to the C66x CPU.

For detailed information about this module, see chapter DSP Subsystems in the device TRM.

Dual Cortex-M4 IPU Subsystem Interrupt Controller (IPUx_Cx_INTC, where x = 1, 2)

There are two Image Processing Unit (IPU) subsystems in the device - IPU1, and IPU2. Each IPU subsystem integrates two Arm Cortex-M4 cores.

A Nested Vectored Interrupt Controller (NVIC) is integrated within each Cortex-M4. The interrupt mapping is the same (per IPU) for the two cores to facilitate parallel processing. The NVIC supports:

  • 64 external interrupts (in addition to 16 Cortex-M4 internal interrupts), which are dynamically prioritized with 16 levels of priority defined for each core
  • Low-latency exception and interrupt handling
  • Prioritization and handling of exceptions
  • Control of the local power management
  • Debug accesses to the processor core

For detailed information about this module, refer to Arm Cortex-M4 Technical Reference Manual (available at infocenter.arm.com/help/index.jsp).