Lpc2000

I have solved the matter, and have to say this:

It is VERY VERY IMPORTANT to look carefully at datasheet as some
details are offten oversighted, so my oversight was not adding bits
(15.-13. for standard identifiers and 31.-29. for extended
identifiers) for controller (channel that receives specified ID).

So Apart from ID 11 or 29 bit you also have 3 bits telling for which
can controller the ID is ment for.

For example:

If you want to receive message from ID = 15 and you want to receive it
on CAN channel (controller) 1 then for standard identifiers you should
write to AFRAM 0x200FF7FF for standard identifiers and 0x2000000F for
extended identifiers.