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ADS8331: ADS8331

Part Number: ADS8331

I am reading 4 channels in ADS8331. I am getting tag bits correct but ADC value is wrong. 

Data received.= 0X17CE(6094) 
TAG BITS= 0b0100000000000000
but pin voltage is 2.462V @ channel no. 2.
Vref = 4.105V

CFR= 110011111111
packet to read data = 0b1101000000000000
Dummy to receive tag bits = 0b1000000000000000
 in images
blue is clock
yellow is Chip select
green is SDO(MISO)
pink is SDI (MOSI).  16 bit adc value tag bits
 end of packet