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SSI信号时5V TTL高电平，输进去DSP的McBSP要电平转换，请问哪位工程师给解答下“1”DSP的MCBSP的是COMS电平还是TTL电平？2转换需要的TI芯片是那种？谢谢
McBSP: multichannel buffered serial port, 是CMOS 电平。TXB系列都可用。
除了TXB系列，还可以使用带方向控制位的SN74LVCxT245.
