LTC2326-16 BUSY ISSUES

Hello..

I have LTC2326-16 bit ADC with VDD voltage as 5V and OVDD voltage as 3.3 v. I done my code as on start CNV i made it as HIGH when ever i get the BUSY has LOW then i am sending the 16 clock pulse SCK as 25 MHZ frequency . on falling edge of SCK i am trying to read the data . But I am facing the issue with BUSY pin. The BUSY pin is not moving to HIGH if it is HIGH only conversion has to be done. The BUSY pin i am getting always LOW . Please help me with this ?

  

Please find the above attachment for my connections ?