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CC2430-RTR1-F128Z 数据表(PDF) 87 Page - Texas Instruments |
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CC2430-RTR1-F128Z 数据表(HTML) 87 Page - Texas Instruments |
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87 / 234 page  CC2430 CC2430 PRELIMINARY Data Sheet (rev. 1.03) SWRS036A Page 87 of 232 Initialization Write DMA channel configuration DMA Channel Idle DMAARMx=1 DMA Channel Armed Trigger or DMAREQx Transfer one byte or word when channel is granted access . DMAARMx=0 ABORT=1 and DMAARMx=1 ABORT=1 and DMAARMx=1 Modify source/ destination address Reached transfer count? no yes no no no yes no yes yes Load DMA Channel configuration yes Interrupt request Figure 17: DMA Operation 13.2.2 DMA Configuration Parameters Setup and control of the DMA operation is performed by the user software. This section describes the parameters which must be configured before a DMA channel can be used. Section 13.2.3 on page 90 describes how the parameters are set up in software and passed to the DMA controller. |
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