A 4-layer PCB with a solid ground plane and a separate power plane is recommended. Keep the analog and digital grounds separate and connect them at a single point. Use a star topology for the power supply and keep the decoupling capacitors close to the IC.
Use the built-in HDMI transmitter calibration feature to optimize the output. Ensure the HDMI clock frequency is set correctly, and the transmitter is configured for the desired video mode. Also, use a high-quality HDMI cable and ensure the display device is set to the correct input.
The maximum cable length supported is 30 meters at 1080p resolution and 15 meters at 4K resolution. However, the actual cable length may vary depending on the cable quality, signal frequency, and environmental factors.
Check the HPD (Hot Plug Detect) pin connection and ensure it's properly connected to the HDMI connector. Verify the HPD signal is properly generated by the display device. Also, check the firmware configuration and ensure the HPD detection is enabled.
The typical power consumption is around 1.2W in active mode and 10mW in standby mode. However, the actual power consumption may vary depending on the system configuration, clock frequency, and operating conditions.
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