A Cutting-Edge SENT Protocol IP Core for Automotive Communication

DSENT IP Core — High-Precision SENT Protocol Controller for Automotive Sensors

Reliable, Low-Cost Automotive Sensor Communication

The DSENT IP Core is a hardware implementation of the Single Edge Nibble Transmission (SENT) protocol controller, fully compliant with the SAE-J2716 standard. Designed for automotive applications, DSENT provides a robust, low-cost solution for transmitting precise sensor data between devices and central units such as Engine Control Units (ECUs).

SENT is a single-wire communication protocol optimized for transmitting sensor signal values through precise timing between falling signal edges. With DSENT, engineers can implement hardware-based, high-efficiency communication as either a sensor transmitter or a receiver in central units, ensuring seamless, real-time data exchange.

Key Advantages of SENT Protocol

DSENT leverages the SENT protocol to deliver reliable, high-precision communication for automotive applications:

• Calibration/Sync Pulse: 56-tick pulse for accurate timing alignment

• Status & Communication Nibbles: 12–27 ticks per nibble

• Data Nibbles: Up to six nibbles per message

• CRC Checksum: Ensures data integrity and error detection

• Optional Pause Pulse: Configurable from 12 to 767 ticks

SENT vs. CAN XL — Complementary Automotive Protocols

1. Sensor-to-ECU Communication
   SENT excels at low-latency, point-to-point sensor data transfer, while CAN XL provides high-speed, multi-node communication across the vehicle network.

2. Low-Cost, High-Precision Data Transfer
   SENT requires minimal wiring and system resources, making it ideal for transmitting high-resolution sensor data. CAN XL handles aggregated, higher-bandwidth communication.

3. Integration with Vehicle Networks
   SENT sensor data can be collected by the ECU and transmitted via CAN XL for system-wide processing. This layered approach optimizes sensor-level precision while supporting network-level data distribution.

4. Synchronized Transmission
   SENT’s precise synchronization ensures reliable timing for critical sensor data, which is essential for ADAS, powertrain control, and other advanced automotive applications.

5. Error Detection & Reliability
   Built-in CRC checks complement CAN XL’s robust network-level error handling, providing end-to-end reliability across automotive systems.

Why Choose DSENT IP Core?

• Simple and easy implementation protocol

• SAE-J2716 compliant SENT protocol controller

• Single-wire, low-cost sensor-to-ECU communication

• High-precision timing with calibration and CRC

• Seamless integration with CAN XL networks

• Efficient hardware implementation for sensors and central units

• Ideal for ADAS, engine control, and automotive sensor networks

DSENT, LIKE ALL DCD’S IP CORES, IS TECHNOLOGY AGNOSTIC, ENSURING 100% COMPATIBILITY WITH ALL FPGA AND ASIC VENDORS.

For technical details, integration support, or to request DSENT IP Core documentation, contact info@dcd-semi.com

• Versatility in Communication: Supports Fast and Slow Channel transmission or reception.
• Automatic Data Rate Synchronization: Maintains stable data exchange despite variations in clock accuracy.
• Customizable Data Length: Configurable from 1 to 6 nibbles for enhanced flexibility.
• Advanced Error Detection: Features optional automatic CRC error detection and Frame Error.
• Hardware CRC calculation in Transmit mode.
• Pause Pulse Support: Includes optional Pause Pulse Period functionality for operational efficiency.
• Master Trigger Pulse Support: Enables communication with up to four sensors over a single wire.
• Technology Independence: Fully synthesizable and implementable across various process technologies.
• A 56-tick calibration/synchronization pulse.
• Status and communication nibbles spanning 12 to 27 ticks.
• Up to six data nibbles of similar durations.
• A CRC checksum nibble for data validation.
• An optional Pause Pulse Period ranging from 12 to 767 ticks.