NASR-M clock generator preliminary config
December 30, 2025 —
Nazim
The heart of the NASR-M carrier boards is the LMK03328 clock generator. It's an ultra-low noise and high-performance clock generator with two PLLs and eight outputs. The outputs can be set to single-ended or differential with an adjustable voltage level. The chip can switch between two reference inputs and is configured with I2C. In my case, the main reference input is the onboard TCXO, and the secondary is an external reference.