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Overview

SmartDV’s PSI5 Controller IP is a silicon-proven, fully featured Peripheral Sensor Interface solution purpose-built for automotive SoC designs requiring reliable, high-integrity sensor connectivity across airbag, chassis control, safety, and powertrain applications. Fully compliant with PSI5 v2.3 and backward compatible with PSI5 v1.3, it delivers complete ECU-side PSI5 controller functionality with support for 4 independent parallel channels and up to 6 sensor slots per channel, providing a scalable, production-ready sensor interface foundation for the most demanding automotive functional safety applications.

Designed to address the full breadth of modern automotive sensor system requirements, the IP supports both asynchronous and synchronous transmission modes, Manchester encoding and error detection, configurable data word lengths from 8 to 28 bits, bidirectional ECU-to-sensor communication via downstream pulse-length and sync-pulse modulation, and Enhanced Serial Messages per SENT SAE J2716. Its 24-bit microsecond-resolution timestamp, 32-frame per channel FIFO with buffer overrun detection, and comprehensive interrupt management give automotive SoC teams a production-tested, feature-complete PSI5 controller that meets the stringent reliability and diagnostic requirements of ASIL-rated automotive sensor systems.

Built for design flexibility and silicon efficiency, the IP core is highly configurable for both ASIC and FPGA implementations, with a strong focus on area optimization, power management, and peak performance. Its parameterized channel architecture, staggered sync pulse generation, and clean host interface enable fast integration and confident design bring-up across a wide range of automotive process nodes and target applications.

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PSI5 Controller
Key Features
  • Full PSI5 Controller Functionality – Complete ECU-side implementation per PSI5 v2.3 with 4 independent parallel channels and up to 6 sensor slots per channel at 125 kbit/s and 189 kbit/s data rates
  • Asynchronous and Synchronous Transmission Modes – Both transmission modes supported with microcontroller-controlled synchronous mode for flexible sensor system topologies
  • Manchester Encoding and Error Detection – Manchester protocol decoding with error recognition and configurable data word lengths of 8, 10, 16, 20, 24, and 28 bits per PSI5 standard
  • ECU to Sensor Communication – Bidirectional downstream communication via pulse-length variation and sync-pulse omission with 3 or 6-bit CRC generation and start sequence support
  • High-Precision Timestamping – 24-bit timestamp with 1 μs resolution and storage of up to 32 frames per channel for precise sensor event timing and diagnostics
  • Enhanced Serial Message Support – SENT SAE J2716 JAN 2010 Enhanced Serial Message support for extended sensor data communication
  • Advanced FIFO Management – Per-channel FIFO with buffer overrun detection, buffer memory status overview registers, and staggered sync pulse generation across all channels
  • Comprehensive Interrupt Management – Sum interrupt for general events, sticky interrupt flags, optional error interrupts, and configurable interrupt enable/disable for flexible event-driven operation
Compliance and Compatibility
  • Fully compliant with PSI5 v2.3; backward compatible with PSI5 v2.x and v1.3
  • Optional support for SENT SAE J2716 JAN 2010 Enhanced Serial Messages
  • Configurable SoC interface supporting AMBA AXI, AHB, APB, and custom wrappers for seamless integration
  • Compatible with ASIC and FPGA design flows across leading foundry process nodes
  • Compatible with all major EDA synthesis, simulation, and linting flows

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