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用哪个函数可以实现？
首先推荐你看一寄存器的配置，其次可以使用CSL中提供的函数
Function void PWR_powerDown( );
PWR_powerDown Forces DSP to enter power-down state
为什么在该模式下电流没有变小？
你好，建议参考一下这篇文档 的功耗分析：TMS320C6414/5/6 Power Consumption Summary
http://www.ti.com/lit/an/spra811c/spra811c.pdf
