CoreTDC is a high-precision measurement IP that calculates time differences between signal edges using a hybrid approach combining coarse counting and fine-grained delay measurement. It determines the delay between a synchronous reference signal and an asynchronous event, making it suitable for time-sensitive applications. The architecture includes a coarse counter for large time intervals and a tapped-delay line based on FPGA carry-chain elements for fine resolution measurements. Calibration logic compensates for environmental variations such as temperature and process differences, ensuring accurate delay estimation. The IP outputs a detailed time measurement that combines coarse timing and calibrated delay values, enabling high accuracy across a wide range of conditions. It operates using multiple clock domains to optimize measurement precision and performance. CoreTDC is widely used in scientific and sensing applications such as LiDAR, time-of-flight measurement, and imaging systems, where precise temporal measurements are critical.
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Features and Benefits
- High-Precision Timing Measurement
- Measures delay between synchronous and asynchronous signals
- Combines coarse and fine measurement techniques
- Tapped Delay Line
- Uses FPGA carry-chain elements
- Provides fine-grained timing resolution
- Calibration Mechanism
- Compensates for environmental variations
- Improves measurement accuracy
- Flexible Clock Domains
- Separate clocks for operation and calibration
Licensing Options
Free with any Libero license
Documentation
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| CoreTDC User Guide | Download |