target adapter version 2.2.1 and Version 2.2.2

In the Installation Considerations for DB2 , DB2 8.2 is mention as the supported product.
I would like work on DB2 8.1 for z/os , how can I do it ? where is the documentation that explain how the target adapter works on Db2 on z/os

Also I installed ARF 2.2.2 but have a Target Adapter CD .
I didn’t find any Documentation for this version on the servline. Any suggestions? Can they work together