Hi DragosB
First , I would like to thank you for your reply after which I am gradually able to understand the working . As you mentioned in your first reply to me the tx path frequencies are set in the following way
/* BBPLL DAC T2CLK T1CLK CLKTF TSAMPL */
{983040000, 122880000, 122880000, 61440000, 30720000, 30720000},
So in the reference document it is mentioned , it is designed for LTE 10 . Now the doubts are the following
1.) The LTE 10 has the sample rate of 15.36 msps but why do we keep the TXSAMP at 30.72 mega in the code?
2.) In page number 31 in section Tx FIR of the reference manual its says the tx FIR uses the DAC CLK , while in this case the DAC CLK is 122880000 then why do we program TX FIR with 30720000 .
3.) In the Tx FIR section again it says , the number of filter taps available depends on DAC_CLK/ SampleRate * 16. So in this case will it be ( 122.88 mega/30.72 mega or 122.88 mega/15.36 mega) * 16 . First will give 64 while the second option will give128 . So which one is correct .
I am sure you will be able to help me out with. I will be waiting for your reply
Regards
Bhaskar