Transcription of MPC5121e Serial Peripheral Interface (SPI)
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MPC5121e Serial Peripheral Interface (SPI)
Freescale SemiconductorApplication NoteDocument Number: AN3904 Rev. 0, 08/2009 Contents Freescale Semiconductor, Inc., 2009. All rights purpose of this application note is to describe the Serial Peripheral Interface bus controller (SPI) implemented on Freescale s MPC5121e microcontroller. It describes how to configure and use the programmable Serial controller (PSC) and PSC centralized FIFO controller (FIFOC) in all supported SPI objective of this application note is to describe the necessary steps needed to initialize and configure PSC in the SPI mode at all supported of the SPIThe Serial Peripheral Interface (SPI) protocol is asynchronous Serial data standard, primarily used to allow a microprocessor to communicate with other microprocessors or ICs such as memories, liquid crystal 1 Introduction .. of the SPI.. 12 Description of the SPI module .. module in MPC5121e .. Peripheral Interface register list .. description and connection scheme.
MPC5121e Serial Peripheral Interface (SPI), Rev. 0 Freescale Semiconductor 3 Figure 1. MPC5121e PSC and FIFOC module system interconnection The PSC requests new data if the Tx shift register is empty or writes Rx data to FIFOC if the Rx shift register is full. This communication is independent of external interrupt or request signals. To make sure
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