A 4-layer PCB with a solid ground plane and a separate power plane is recommended. Keep the clock signal traces short and away from noisy signals. Use a common mode filter or a ferrite bead to reduce EMI.
Use a heat sink or a thermal pad to dissipate heat. Ensure good airflow around the device. Consider using a thermal interface material to improve heat transfer. Operate the device within the recommended temperature range (–40°C to +85°C).
Choose a crystal oscillator with a frequency tolerance of ±20 ppm or better. Ensure the oscillator's load capacitance matches the CY2292FXI's requirements (typically 10 pF to 20 pF). Select a crystal oscillator with a suitable frequency range (e.g., 25 MHz to 50 MHz).
Verify the clock input frequency and amplitude. Check the clock output pin's voltage level and frequency using an oscilloscope. Ensure the clock output is not loaded excessively. Consult the datasheet for specific troubleshooting guidelines.
Use a clock domain crossing (CDC) circuit or a synchronizer to ensure proper clock domain crossing. Ensure the CY2292FXI's clock output is synchronized with the system's clock domain. Consider using a clock buffer or a clock multiplier to minimize clock skew.
CY2292FXI datasheet
by Cypress Semiconductor
