Xilinx AC701 Si5324 Design Manual page 39

Program AC701 with Si5324 Design
To set the Si5324 for Bypass mode edit the hello_iic_si5324.c
Scroll down and locate the line:
// Change to 1 to set Si5324 Loop Bandwidth (BWSEL)
Change the #if 1 to #if 0
Note: Presentation applies to the AC701