I am currently developing a small robot project. The motor driver I have uses a L298 motor driver IC. It supports two methods of control, PWM and PLL and it is configurable with on-board jumpers on my board. What is the difference between the two in motor control? I understand how PWM works, but PLL got me thinking. Should I consider PLL?
For reference, it seems that they work in the same way: http://www.dfrobot.com/wiki/index.php?title=Arduino_Motor_Shield_(L298N)_(SKU:DRI0009)#Sample_Code
Also, here is the L298 datasheet, but it doesn't mention anything about PLL: http://www.st.com/st-web-ui/static/active/en/resource/technical/document/datasheet/CD00000240.pdf