S3C2410的串行外设接口SPI可以进行串行数据传输接口。S3C2410具有两个SPI，每个SPI具有两个8位移位寄存器用于独立地发送和接收数据。在SPI传输过程中，数据时同时发送和接收的(全双工)，8位串行数据传输频率由相应的控制寄存器设置，如果希望仅发送数据，则接收数据can be dummy，同样如果只希望接收数据，则应该发送dummy 1 data。 有4个与SPI传输相关的引脚：SCK (SPICLK0,1)、MISO (SPIMISO0,1)数据线、MOSI (SPIMOSI0,1) 数据线、SS (nSS0,1)-低电平有效。 特性 — SPI 2.11版协议兼容 — 8位发送移位寄存器 — 8位接收移位寄存器 — 8位预定标器逻辑 — Polling、中断、DMA传输模式

S3C2410.doc

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