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6748写SD卡速率

Other Parts Discussed in Thread: TMS320C6748, OMAP-L138

各位工程师好!

想问下TMS320C6748的MMCSD接口写SD卡,速率能到多少?

我写SD卡FAT文件系统的速率只有几十kB/s,这个肯定不正常吧?

我是设计了一个200kHz的定时中断,在中断中写一个4字节的数据。实际运行时,中断只能跑到不到10kHz的速度。

谢谢各位大神!