Global input lines establishes connection between the pins and input multiplexers. Global input lines are divided in two groups, depending on weather they can connect to ports with odd (GIO) or even (GIE) index.
Rule of connection is that it is possible to connect only between a line and a pin which have the same index. For example, line GIO_0 can connect only to zero pin of some of the odd index ports (P1[0],P3[0],P5[0]).
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