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Question on MDIO frame and associated MDC

I have a question on - Clause 45 - 
MDIO Interface: (Could apply
to the original clause 22 also).

1. The Management frame structure 
   shows an idle bit as the last bit
   for each kinds of frames. Can we 
   assume that a complete frame
   will always have this idle bit 
   following the address/data fields
   and hence have an associated MDC 
   clock for this idle bit ?

2. Can we assume that this last 
   bit has to be provided before the 
   frame action (like write, 
   read etc) is executed ?

Thanks in advance for the clarification.

-bipin d. dama