2.9.34 Cid
The Cid structure is a command identifier—a 4-byte structure that specifies a command. This element is used in other structures to identify a particular command to be executed.
The 3 least significant bits of the first byte of the structure together form a Cmt value which specifies the command type; the whole structure MUST be interpreted according to this command type, as follows.
|
Value |
Meaning |
|---|---|
|
cmtFci |
This structure is a CidFci. |
|
cmtMacro |
This structure is a CidMacro. |
|
cmtAllocated |
This structure is a CidAllocated. |
|
cmtNil |
Specifies that the command identifier is empty and does not specify a command. If the first 3 bits of this command identifier are cmtNil, the value of the entire command identifier MUST be 0xFFFFFFFF. |