AM6421

Processor cores:

• 1× Dual 64-bit Arm Cortex-A53 microprocessor subsystem at up to 1.0GHz
  • Dual-core Cortex-A53 cluster with 256KB L2 shared cache with SECDED ECC
  • Each A53 Core has 32KB L1 DCache with SECDED ECC and 32KB L1 ICache with Parity protection
• Up to 2× Dual-core Arm Cortex-R5F MCU subsystems at up to 800MHz, integrated for real-time processing
  • Dual-core Arm Cortex-R5F supports dual-core and single-core modes
  • 32KB ICache, 32KB DCache and 64KB TCM per each R5F core for a total of 256KB TCM with SECDED ECC on all memories
• 1× Single-core Arm Cortex-M4F MCU at up to 400MHz
  • 256KB SRAM with SECDED ECC

Industrial subsystem:

• 2× gigabit Industrial Communication Subsystems (PRU_ICSSG)
  • Supports Profinet IRT, Profinet RT, EtherNet/IP, EtherCAT, Time-Sensitive Networking (TSN), and more
  • Backward compatibility with 10/100Mb PRU_ICSS
  • Each PRU_ICSSG contains:
    • 2× Ethernet ports
      • MII (10/100)
      • RGMII (10/100/1000)
    • 6 PRU RISC cores per PRU_ICSSG each core having:
      • Instruction RAM with ECC
      • Broadside RAM
      • Multiplier with optional accumulator (MAC)
      • CRC16/32 hardware accelerator
      • Byte swap for Big/Little Endian conversion
      • SUM32 hardware accelerator for UDP checksum
      • Task Manager for preemption support
    • Three Data RAMs with ECC
    • 8 banks of 30 × 32-bit register scratchpad memory
    • Interrupt controller and task manager
    • Two 64-bit Industrial Ethernet Peripherals (IEPs) for time stamping and other time synchronization functions
    • 18× Sigma-Delta filters
      • Short circuit logic
      • Over-current logic
    • 6× Multi-protocol position encoder interfaces
    • One Enhanced Capture Module (ECAP)
    • 16550-compatible UART with a dedicated 192-MHz clock to support 12-Mbps PROFIBUS

Memory subsystem:

• Up to 2MB of On-chip RAM (OCSRAM) with SECDED ECC:
  • Can be divided into smaller banks in increments of 256KB for as many as 8 separate memory banks
  • Each memory bank can be allocated to a single core to facilitate software task partitioning
• DDR Subsystem (DDRSS)
  • Supports LPDDR4, DDR4 memory types
  • 16-Bit data bus with inline ECC
  • Supports speeds up to 1600MT/s
• 1× General-Purpose Memory Controller (GPMC)
  • 16-Bit parallel bus with 133-MHz clock or
  • 32-Bit parallel bus with 100-MHz clock
  • Error Location Module (ELM) support

System on Chip (SoC) Services:

• Device Management Security Controller (DMSC-L)
  • Centralized SoC system controller
  • Manages system services including initial boot, security, and clock/reset/power management
  • Communication with various processing units over message manager
  • Simplified interface for optimizing unused peripherals

• Data Movement Subsystem (DMSS)

  • Block Copy DMA (BCDMA)
  • Packet DMA (PKTDMA)
  • Secure Proxy (SEC_PROXY)
  • Ring Accelerator (RINGACC)

Security:

• Secure boot supported
  • Hardware-enforced Root-of-Trust (RoT)
  • Support to switch RoT via backup key
  • Support for takeover protection, IP protection, and anti-roll back protection
• Trusted Execution Environment (TEE) supported
  • Arm TrustZone based TEE
  • Secure watchdog/timer/IPC
  • Extensive firewall support for isolation
  • Secure storage support
  • Replay Protected Memory Block (RPMB) support
• Security co-processor (DMSC-L) for key and security management, with dedicated device level interconnect for security
• Cryptographic acceleration supported
  • Session-aware cryptographic engine with ability to auto-switch key-material based on incoming data stream
    • Supports cryptographic cores
  • AES – 128-/192-/256-Bit key sizes
  • SHA2 – 224-/256-/384-/512-Bit key sizes
  • DRBG with true random number generator
  • PKA (Public Key Accelerator) to Assist in RSA/ECC processing for secure boot
• Debugging security
  • Secure software controlled debug access
  • Security aware debugging

High-speed interfaces:

• 1× Integrated Ethernet switch (CPSW3G) supporting:
  • Up to 2 Ethernet ports
    • RMII (10/100)
    • RGMII (10/100/1000)
  • IEEE 1588 (2008 Annex D, Annex E, Annex F) with 802.1AS PTP
  • Clause 45 MDIO PHY management
  • Energy efficient Ethernet (802.3az)
• 1× PCI-Express Gen2 controller (PCIE)
  • Supports Gen2 operation
  • Supports Single Lane operation
• 1× USB 3.1 Dual-Role Device (DRD) Subsystem (USBSS)
  • Port configurable as USB host,USB device, orUSB Dual-Role device
  • USB device: High-speed (480Mbps), andFull-speed (12Mbps)
  • USB host: SuperSpeed Gen 1 (5Gbps),High-speed (480Mbps),Full-speed (12Mbps), andLow-speed (1.5Mbps)

General connectivity:

• 6× Inter-Integrated Circuit (I2C) ports
• 9× configurable Universal Asynchronous Receive/Transmit (UART) modules
• 1× Flash Subsystem (FSS) that can be configured as Octal SPI (OSPI) flash interfaces or one Quad SPI (QSPI)
• 1× 12-Bit Analog-to-Digital Converters (ADC)
  • Up to 4MSPS
  • 8× multiplexed analog inputs
• 7× Multichannel Serial Peripheral Interfaces (MCSPI) controllers
• 6× Fast Serial Interface Receiver (FSI_RX) cores
• 2× Fast Serial Interface Transmitter (FSI_TX) cores
• 3× General-Purpose I/O (GPIO) modules

Control interfaces:

• 9× Enhanced Pulse-Width Modulator (EPWM) modules
• 3× Enhanced Capture (ECAP) modules
• 3× Enhanced Quadrature Encoder Pulse (EQEP) modules
• 2× Modular Controller Area Network (MCAN) modules with or without full CAN-FD support

Media and data storage:

• 2× Multi-Media Card/Secure Digital (MMC/SD/SDIO) interfaces
  • One 4-bit for SD/SDIO;
  • One 8-bit for eMMC
  • Integrated analog switch for voltage switching between 3.3V to 1.8V for high-speed cards

Power management:

• Simplified power sequence
• Integrated SDIO LDO for handling automatic voltage transition for SD interface
• Integrated voltage supervisor for safety monitoring of over-under voltage conditions
• Integrated power supply glitch detector for detecting fast supply transients

Functional Safety:

• Functional Safety-Compliant
  • Developed for functional safety applications
  • Documentation available to aid IEC 61508 functional safety system design
  • Systematic capability up to SIL 3
  • Hardware integrity up to SIL 2
  • Safety-related certification
    • IEC 61508 certification by TÜV SÜD
• Functional Safety Features
  • ECC or parity on calculation-critical memories
  • ECC and parity on select internal bus interconnect
  • Built-In Self-Test (BIST) for CPU and on-chip RAM
  • Error Signaling Module (ESM) with error pin
  • Runtime safety diagnostics, voltage, temperature, and clock monitoring, windowed watchdog timers, CRC engine for memory integrity checks
  • Dedicated MCU domain memory, interfaces, and M4F core capable of being isolated from the larger SoC with Freedom From Interference (FFI) features
    • Separate interconnect
    • Firewalls and timeout gaskets
    • Dedicated PLL
    • Dedicated I/O supply
    • Separate reset

SoC architecture:

• Supports primary boot from UART, I2C, OSPI/QSPI Flash, SPI Flash, parallel NOR Flash, parallel NAND Flash, SD, eMMC, USB, PCIe, and Ethernet interfaces
• 16-nm FinFET technology
• 17.2mm × 17.2mm, 0.8-mm pitch, 441-pin BGA package