MSP432P401R: ADS1243 interface with msp432

Part Number: MSP432P401R

Hello,

    I want to interface ADS1243 with MSP432P401R processor.ADS1243 is run @4.9152MHz external crystal.ADC work on 3.3V supply. Vref+ is +2.5V and Vref- is 0V(GND). If input voltage given to ADC is 1V then what should be the output data code??( output data code=Vin/(Vref/2^n-1)=666666H is right or wrong??)

 I am using default condition in register setup except speed bit and range bit is set to 1.SPI is working on 750kHz frequency.

Please check my code attached below and code sequence.

ADS1243.h