CDCV850IDGGR datasheet by Texas Instruments

CDCV850IDGGR Frequently Asked Questions (FAQs)

• What is the recommended power-up sequence for the CDCV850IDGGR?
  The recommended power-up sequence is to apply VCC first, followed by VCCIO, and then the input clock signal. This ensures proper device initialization and prevents potential latch-up conditions.
• How do I optimize the clock tree for the CDCV850IDGGR?
  To optimize the clock tree, use a balanced clock tree architecture, minimize clock signal routing distance, and use clock buffers or repeaters to reduce signal degradation. Additionally, ensure that the clock signal meets the recommended input clock specifications.
• What is the maximum clock frequency supported by the CDCV850IDGGR?
  The CDCV850IDGGR supports clock frequencies up to 850 MHz. However, the actual maximum frequency may vary depending on the specific application, PCB layout, and environmental conditions.
• How do I handle clock domain crossing (CDC) in the CDCV850IDGGR?
  To handle CDC, use synchronous or asynchronous CDC techniques, such as gray code counters, FIFOs, or synchronizers, to ensure data integrity and prevent metastability issues.
• What is the recommended termination scheme for the CDCV850IDGGR's output clocks?
  The recommended termination scheme is to use a 50-ohm series resistor and a 10-pF capacitor in parallel to the output clock pin. This helps to reduce signal reflections and improve signal integrity.