HSSR-7110#300 - Avago Technologies

HSSR-7110#300 Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal performance?
  A 4-layer PCB with a solid ground plane and a separate power plane is recommended. Keep the signal traces short and away from noise sources. Use a common mode filter or a ferrite bead to reduce EMI.
• How do I ensure reliable operation across the entire temperature range?
  Use a thermal management system to keep the device within the recommended operating temperature range (0°C to 70°C). Ensure good airflow, and consider using a heat sink or thermal interface material if necessary.
• What are the specific requirements for the input clock signal?
  The input clock signal should be a 25 MHz crystal oscillator with a ±50 ppm frequency tolerance. The clock signal should be connected to the XTAL_IN pin, and the XTAL_OUT pin should be left unconnected.
• How do I configure the device for low-power operation?
  To minimize power consumption, set the device to the lowest possible frequency (e.g., 10 MHz) and disable any unused features. Use the power-down mode (PDN) to reduce power consumption when the device is not in use.
• What are the recommended settings for the internal voltage regulator?
  The internal voltage regulator should be set to 1.2 V for the core voltage (VDDC) and 1.8 V for the I/O voltage (VDDIO). Ensure that the input voltage (VIN) is within the recommended range (1.71 V to 1.89 V).