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TMPR4937 데이터시트(PDF) 182 Page - Toshiba Semiconductor |
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TMPR4937 데이터시트(HTML) 182 Page - Toshiba Semiconductor |
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182 / 552 page ![]() Chapter 8 DMA Controller 8-26 Bit Mnemonic Field Name Description Read/Write 6:3 FIFUM[3:0] FIFO Use Enable [3:0] FIFO Use Enable [3:0] (Default: 0x0) Each channel specifies whether to use 8-double word FIFO in Dual Address transfer. FIFUM[n] corresponds to channel n. Refer to “8.3.8.2 Burst Transfer During Dual Address Transfer” for more information. R/W 2 Reserved ⎯ 1 RRPT Round Robin Priority Round Robin Priority (Default: 0) Specifies the method for determining priority among channels. 1: Round Robin method. Priority of the last channel used is the lowest, and the next previous channel has the next lowest priority. Round robin is in the order Channel 0 > Channel 1 > Channel > Channel 3. 0: Fixed Priority. Priority is fixed in the order Channel 0 > Channel 1 > Channel 2 > Channel 3. R/W 0 MSTEN Master Enable Master Enable (Default: 0) This bit enables the DMA Controller. 1: Enable 0: Disable Note: If the entire DMA Controller is disabled, then all internal logic including the Bus Interface Logic and State Machine are reset. R/W Figure 8.4.1 DMA Master Control Register (2/2) |
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