TR5-Lite User Manual
65
June 20, 2018
Find a mode in this RTL code section and modify these three parameters,as shown below:
new_hs_div = 3'b100 ;
new_n1 = 4'b1010 ;
fdco = 23'h05_3700 ;
In addition, Silicon Lab also provide the corresponding calculation tool.
Users can refer to the Programmable Oscillator tool (See
mentioned in below link to
calculate the values of new_hs_div and new_n1, then, the fdco value can be calcuted with above
ftdo equation.
http://www.silabs.com/products/clocksoscillators/oscillators/Pages/oscillator-software-development
Figure 5-5 Programmable Oscillator Calculator tool
In addition, if the user doesn’t want Si570 controller to configure Si570 as soon as the FPGA
configuration finishes, users can change settings in Si570_controller.v, shown below.