pef80902 Infineon Technologies Corporation, pef80902 Datasheet - Page 31

• Manufacturer Part Number: pef80902
• Description: T-sminto 4b3t Second Gen. Modular Isdn Nt
• Manufacturer: Infineon Technologies Corporation

DC
2.3.7
2.3.7.1
The following state diagram describes all the actions/reactions resulting from any
command or detected signal and resulting from the various operating modes.
The states with its inputs and outputs are interpreted as shown below:
Figure 5
Each state has one or more transitions to other states. These transitions depend on
certain conditions which are noted next to the transition lines. These conditions are the
only possibility to leave a state. If more conditions have to be fulfilled together, they are
put into parentheses with an AND operator (&). If more than one condition leads to the
same transition, they are put into parentheses with an OR operator (|). The meaning of
a condition may be inverted by the NOT operator (/). Only the described states and
transitions exist.
At some transitions, an internal timer is started. The start of a timer is indicated by TxS
(’x’ is the timer number). Transitions that are caused if a timer has expired are labelled
by TxE.
Some conditions lead to the same target state. To reduce the number of lines and the
complexity of the figures, a state named “ANY STATE” acts on behalf of all state.
Data Sheet
Deactivation Confirmation
State Machine for Activation and Deactivation
State Machine Notation
State Diagram Example
C/I Channel Indication
Transmitted U-Signal
State Name
(DOUT)
OUT
23
SSP
TIM
Send-Single-Pulses
Timing Request
Functional Description
PEF 80902
SM_expl.emf
2001-11-12