Determining the revision of the FX (CY7C64613) part

Question: How do you determine the revision of the FX (CY7C64613) part?

 

Answer:

On the 128 pin part there are 4 lines of markings.  The first is the label EZ-USB FX. The second is the part number CY7C64613-128NC.  The third line is a 4 digit date code. YYWW format, where YY is two digit year.  WW is week number that the part came  out of manufacturing. The 4 th line starts with the rev letter of the part.
For the  form   CN0481 Korea, the letter C would be the rev letter of the chip.