Chapter 42
Pulse-Width Modulator (PWM) Driver
42.1 Introduction
The pulse-width modulator (PWM) has a 16-bit counter and is optimized to generate
sound from stored sample audio images and generate tones.
The PWM has 16-bit resolution and uses a 4x16 data FIFO to generate sound. The
software module is composed of a Linux driver that allows privileged users to control the
backlight by the appropriate duty cycle of the PWM Output (PWMO) signal.
42.1.1 Hardware Operation
Figure below shows the PWM block diagram.
i.MX 6Solo/6DualLite Linux Reference Manual, Rev. L3.0.35_4.1.0, 09/2013
Freescale Semiconductor, Inc.
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