Hi.
For instance for DSP56F807VF80E check the product summary page that you can get from Buy section of the product page:
http://www.freescale.com/webapp/search.partparamdetail.framework?PART_NUMBER=DSP56F807VF80E&lang_cd=
In general information you will find following information:
When you click on life cycle you will see the description valid for the stages.
When you click at Application you will see the description valid for the 10 year application.
A PLC code does not mean that a part will be available for any specific amount of time. For example some parts have a PLC code of "4" for a few years; some have a PLC code of "4" for more than 20 years. The life of a part is primarily determined by market demand.
When a product is not in the Product Longevity program Freescale cannot estimate the future availability of the part, which is primarily based on market demand. Freescale has no known plans to end of life the part. When a decision is made to end of life a part, Freescale provides a period of time (generally one year) during which customers can place lifetime buy orders.
Product Longevity program link:
http://www.freescale.com/webapp/sps/site/overview.jsp?code=PRDCT_LONGEVITY_HM&fsrch=1&sr=1
For a full explanation of all statuses, take a look at the details of our Product Life Cycle (PLC) codes.
http://www.freescale.com/webapp/sps/site/eialink.jsp
I hope this will help.