The crystal not starting up can be the result of many different things including but not limited to:
- Improper layout of traces leading from the MAX35103 to the crystal oscillator. If the traces run parallel and close to each other, there may be some parisitic capacitance added into the traces that would prevent the crystal from oscillating.
- Incorrect oscillator is chosen to work with the MAX35103. Please refer to the product datasheet for a chosen oscillator and compare them to the recommended values for oscillator capacitance and etc. in the MAX35103 datasheet.
- Please refer to the way that the traces between the MAX35103 and the crystal oscillator are routed in the MAX35103EVKIT for a good example to follow.