Rx SIGNAL PATH/Tx SIGNAL PATH chain

Hello..!!

I have been working with AD9364 and i'm using an no-os code to initialized AD9364. I'm setting Rx clock chain with HB3 decimation 2 for rx side. In the reference manual(UG-673) on page number 35 you have mentioned some set of coefficient for HB3 / DEC3 , my question is:

1) which filter coefficient you are configuring?..their are two set of coeff  For Rx HB3 has the following coefficients: [1, 4, 6, 4, 1], and Rx DEC3 has the following coefficients: [55, 83, 0, −393, −580, 0, 1914, 4041, 5120, 4041, 1914, 0, −580, −393, 0, 83, 55]. do we have privilege to choose one of them? if yes then how to do that?

2) Which coefficient is configured by default between HB3 and DCE3?

Thank you!