__low_level_init (void), Объясните пожалуйста Опции

[condor]

Для чего стоит использовать функцию __low_level_init?
В EW430_CompilerReference.pdf я нашел такое:
Customizing system initialization
It is likely that you need to customize the code for system initialization. For example,
your application might need to initialize memory-mapped peripheral units, or omit the
default initialization of data segments performed by cstartup.
You can do this by providing a customized version of the routine __low_level_init,
which is called from cmain before the data segments are initialized. Avoid modifying
the cstartup file directly.

Судя из этого, всю периферию надо инициализировать в __low_level_init.
Объясните, плз, правильно ли я понял?