Broadcom recommends a 4-layer PCB with a solid ground plane, and thermal vias under the package to dissipate heat. A thermal pad on the bottom of the package should be connected to a thermal plane on the PCB.
Use a 100-ohm differential impedance for the high-speed signals, and consider using a common-mode filter or a pi-filter to reduce EMI. Also, ensure that the PCB layout follows good signal integrity practices, such as minimizing trace lengths and using shielding.
The recommended power-up sequence is to apply the 1.2V core voltage (VCC) first, followed by the 3.3V I/O voltage (VCCIO). The device should be powered up in the following order: VCC, VCCIO, and then the clock signal.
Configure the device to use the lowest possible power mode for the specific application. Use the power-down mode (PD) to reduce power consumption when the device is not in use. Additionally, consider using a dynamic voltage and frequency scaling (DVFS) technique to optimize power consumption.
The recommended settings for the internal regulators are: VCC = 1.2V, VCCIO = 3.3V, and VREF = 1.2V. These settings ensure optimal performance and power consumption.