A pulse modulation controller IP core based on AMBA peripheral bus was proposed.This controller integrates pulse width modulation(PWM) and pulse density modulation(PDM) together
and can easily change between the two modulations.The system clock frequency can be 150 MHz based on 0.13 μm standard cell library.According to the verification of FPGA
when the controller works in PWM mode
the frequency is 1 to 32 kHz.While in PDM mode the frequency is 198 Hz to 2.34 MHz.The result indicates that in the frequency of 13 to 150 MHz
the controller can change easily between the two modes
and implement efficient modulation.
关键词
AMBA外围设备总线知识产权核脉冲宽度调制脉冲密度调制
Keywords
AMBA peripheral busIP corepulse width modulation(PWM)pulse density modulation(PDM)