We have purchased a MAX35103evkit to get an idea producing an ultrasonic flow meter using MAX35103. As we are using 2Mhz piezo sensor with it. How can we configure 2MHz sensor with the kit?

Please be advised that MAX35103 was designed for a 4MHz resonator. No other frequency of resonator is supported. Also, the drive frequency is adjusted with the ‘Pulse Launch Divider’ (DPL[3:0]) bits in the TOF1 Register, can only provide 125kHz to 1MHz pulse launch frequencies as below:

So we can not use MAX35103 to support 2MHz sensor. Sorry about this.