Controlling the speed of a brushless motor with the HA13535
This link may help you : http://www.atmel.com/images/doc8012.pdf
You need a microcontroller to generate a PWM command to your controller:    

Each PWM high and low phase signal is controlled by a microcontroller (enable signals Figure 5) which are the inputs U+/U- V+/V- and W+/W- in the HA13535. The outputs U, V and W are connected to the motor.    Be sure that the motor is well adapted to the controller (current and voltage) and don't forget to add the flyback diodes.