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TMS320F280025: Clarify SYSPLLMULT.IMULT

Part Number: TMS320F280025


Dear Champs,

I am asking this for our customer.

In Table 3-48. SYSPLLMULT Register Field Descriptions of F28002x TRM.

https://www.ti.com/lit/ug/spruin7a/spruin7a.pdf?ts=1623322861440&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FTMS320F280025C

For IMULT, it says,

"SYSPLL Integer Multiplier: For 0000000 Fout = Fref (PLLBYPASS) Integer Multiplier = 1...."

What does that mean by Fout and Fref above? 

Where does PLLBYPASS come and go?

Will PLLBYPASS go through REFDIV and ODIV?

Do we have a block diagram to show the above?

Wayne Huang