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TMS320F28069M: Hi, guys. I have a confusion about the SFRA, it is about SFRA library function SFRA_IQ_COLLECT

Part Number: TMS320F28069M
Other Parts Discussed in Thread: SFRA

Hi, guys.  I have a confusion about the SFRA, it is about SFRA library function SFRA_IQ_COLLECT. see the picture below.

   There is a Ambiguity between the illustrates and the SFRA code which in the BUCK demo. in the code, the control_output is mean the output of SFRA_IQ_INJECT function, but in the 

Figure 24 illustrates,  it mean the voltage.  can you explain which one is right ?
 thank you so much.