Functional Description
b. Symbols at a path
There is 1 symbol at a path
b.1.
marks the beginning of a path, for which a.3 applies.
c. Symbols at an internal or external message box.
There are 2 symbols at a message box.
This symbol means, that the action described in the box is not
possible. Either the action specified is not done at all or an additional
action is taken (written into the box).
c.1.
Box
Note: The impossibility to perform the optional T203 timer-procedure is not explicitly men-
tioned; the corresponding actions are only crossed out.
This symbol means, that within a software-path, by taking the
prescribed register actions the contents of the box will be done
c.2.
Box
automatically.
d. Text within boxes
Text within boxes can be grouped in one of two classes.
The text denotes an interrupt which is always associated with the
d.1.
d.2.
Text
Box
event. (But can also be associated with other events). (See ISTA and
EXIR register description in the Technical Manual for an interrupt
description).
Box
or
Text
The text describes a register access
either a register read access to discriminate this state from others or
to reach a branching condition
Box
Text
or a register write access to give a command.
The text is placed in the box that describes the functions for which the register access is
needed.
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