1.2 Peripherals Used

The following Core Independent Peripherals (CIPs) are used in this application. Each CIP used in this application is explained in detail in the following sections of this document.

• Numerically Controlled Oscillator (NCO): Generates output frequencies that are a fraction of the input frequency and are used to control the speed of motion in this application.
• Universal Asynchronous Receiver/Transmitter (UART): The communication method between the computer and PIC® microcontroller.
• Direct Memory Access (DMA): Copies data from one memory location to another and is used to handle acceleration curves and incoming data from the UART.
• Timer 2: Used to trigger the DMA modules associated with acceleration.
• Signal Measurement Timer (SMT): Used to measure travel distance for the CNC machine.
• Configurable Logic Cell (CLC): Performs various logic operations based on their inputs. They are used in this application to allow both manual and automatic control of the stepper motors on the same pin.