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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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NUC505-YO2G 데이터시트(PDF) 102 Page - Nuvoton Technology Corporation |
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NUC505-YO2G 데이터시트(HTML) 102 Page - Nuvoton Technology Corporation |
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102 / 130 page  NUC505 July. 26, 2018 Page 102 of 130 Rev.1.08 Secure-Digital Host Controller (SDHC) 6.17 6.17.1 Overview The Secure-Digital Host Controller (SDH Controller) includes a DMAC (Direct Memory Access Controller) unit and a SD unit. The DMAC unit provides a DMA (Direct Memory Access) function for SD to exchange data between system memory and shared buffer (128 bytes), and the SD unit controls the interface of SD/SDHC/MMC. The SD HOST controller can support SD/SDHC/MMC with DMAC to provide a fast data transfer between system memory and cards. 6.17.2 Features Supports single DMA channel. Supports hardware Scatter-Gather function. Using single 128 Bytes shared buffer for data exchange between system memory and cards. Interface with DMAC for register read/write and data transfer. Supports SD/SDHC/MMC card. The frequency of HCLK should be higher than the frequency of peripheral clock. |
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