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TMS320C54x with the McBSP and DMA Implementing a Software UART

消耗积分:10 | 格式:pdf | 大小:199KB | 2014-11-20

周俊杰

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The TMS320C54x DSP provides a flexible synchronous serial interface through the McBSPs。However， interfacing the DSP to an asynchronous device， such as a UART， requires more than just correct initialization of the McBSP。 Synchronous communication relies on three separate signals to transmit and receive data: data， frame sync and clock。 Asynchronous communication， however， transmits the data on a single line without any clocking。 For the receiver to know when the data begins and ends, start and stop bits must frame the data。 The purpose of this report is to explain in detail how to hook up an asynchronous device to the McBSP of the DSP and how to correctly process this data using the DMA and software。
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