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AM5729: Package Compatibility btw ABZ and ABC type

Genius 3177 points
Part Number: AM5729

Hi Champs

My customer trying to design common processor board for AM57x. And they faced the compatibility issue btw ABZ and ABD as below.

From the document regaridng compatibility below says the both package has pin-to-pin compatibiltiy. But they have different pin assignment as shown in Figure 4, 5.

https://www.ti.com/lit/an/sprabx8e/sprabx8e.pdf?ts=1640539276957

Could you please clarify how the both package able to work at same board? I couldn't understand how does it work with pin-to-pin compatibility even though some pins are different assignment. 

We need an example description for better understanding. 

Regards, 

Jack