MPC5121e
NXP
describe the serial peripheral interface bus controller (SPI) implemented on Freescale’s MPC5121e microcontroller
Application NoteNxp
MPC5121e Serial Peripheral Interface (SPI) Application Note
Guide for configuring the SPI bus controller on the NXP MPC5121e microcontroller using the Programmable Serial Controller (PSC) and centralized FIFO controller (FIFOC).
Overview
This application note describes the implementation and configuration of the serial peripheral interface (SPI) bus controller on the NXP MPC5121e microcontroller. It details how to utilize the Programmable Serial Controller (PSC) and the PSC Centralized FIFO Controller (FIFOC) for SPI communication. The document covers initialization procedures including pin muxing, MCLK frequency settings, and register configurations for master and slave modes. It also provides instructions for handling data through polling, interrupts, and Direct Memory Access (DMA) to optimize performance and prevent buffer overruns/underruns.
Use Cases
- Configuring the MPC5121e to communicate with external SPI devices like memories and ADCs
- Implementing DMA-based SPI transfers to reduce CPU load
- Setting up centralized FIFO management for multiple serial channels
- Initializing SPI master or slave operations on NXP microcontrollers
Topics
MPC5121e
NXP
SPI
PSC
FIFOC
Serial Peripheral Interface
Master Mode
Slave Mode
DMA
Microcontroller
Registers
Referenced Parts
| MPC5121e | NXP | describe the serial peripheral interface bus controller (SPI) implemented on Freescale’s MPC5121e microcontroller |