Go from here.

while(<DATA>){
    chomp;
    s/\"|\;//g;
    my($item,$value) = split /\s\:?/,$_,2;
    $value =~ s/^\s*\(//;
    $value =~ s/\)\s*$//;
    print "$item , $value\n";
}
    
__DATA__
direction : in
code_unit : "1ps";
sum_1 ("0.01, 0.02");
function : "((( X1 | X2 ) & A1))";
process : 1;
cap ( 3.0 , pf );
features ( display )   ;
[download]

Above gives

direction ,  in
code_unit ,  1ps
sum_1 , 0.01, 0.02
function , (( X1 | X2 ) & A1)
process ,  1
cap ,  3.0 , pf 
features ,  display