SPRACF2A April   2018  – January 2026 AM3351 , AM3352 , AM3354 , AM3356 , AM3357 , AM3358 , AM3359 , AM4372 , AM4376 , AM4377 , AM4378 , AM4379 , AM5706 , AM5708 , AM5716 , AM5718 , AM5726 , AM5728 , AM5729 , AM5746 , AM5748 , AM5749

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Ethernet Redundancy in Smart Grid Substations
    1. 1.1 High Availability Seamless Redundancy (HSR)
    2. 1.2 Parallel Redundancy Protocol (PRP)
  5. 2HSR/PRP Implementation in Sitara Processors
    1. 2.1 PRU_ICSSG Overview
    2. 2.2 PRU_ICSSG HSR/PRP Architecture
    3. 2.3 PRU_ICSSG HSR/PRP Features
    4. 2.4 PRU_ICSSG HSR/PRP Firmware
    5. 2.5 Benefits of PRU_ICSSG HSR/PRP
    6. 2.6 Linux HSR/PRP Solution
    7. 2.7 RTOS HSR/PRP Solution
  6. 3HSR/PRP SDK Support
  7. 4Summary
  8. 5References
  9. 6Revision History

2.3 PRU_ICSSG HSR/PRP Features

  • HSR End Node (DANH) compliant with IEC 62439-3 Edition 3 Clause 5

  • PRP End Node (DANP) compliant with IEC 62439-3 Edition 3 Clause 4

  • 10/100/1000 Mbits/s Full Duplex Ethernet Interface

    • 1000 Mbits/s exists for Linux from SDK 10.1 and newer SDKs

  • Enhanced ICSSG cut-through switch with HSR capability

    • Achieving switching time < 2.5μs at 1 Gbps link speed

  • IEEE 802.1Q QoS traffic prioritization maintained on both egress (host-to-Ethernet) and ingress (Ethernet-to-host) paths

  • IEEE 802.1Q bridging rules support, including Filter Database (FDB) - static and ageable entries, and RSTP port states (port block, diable, learning)
  • IEEE 1588 - PTP timescale timer with 1-PPS capability
  • Rate limiting to prevent storm traffic by limiting the rate of best-effort traffic
  • Node table enhanced with traffic capture (statistics) for all frames received by the host