PEF82902FV11XP Lantiq, PEF82902FV11XP Datasheet - Page 80

• Manufacturer Part Number: PEF82902FV11XP
• Manufacturer: Lantiq

Specifications of PEF82902FV11XP

• Lead Free Status / Rohs Status: Supplier Unconfirmed

Figure 32
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.
The state machines are designed to cope with all ISDN devices with IOM
interfaces. Undefined situations are excluded. In any case, the involved devices will
enter defined conditions as soon as the line is deactivated.
2.4.7.2
For the awake process two signals are defined’ U1W’ and ’U2W’. Depending on the call
direction (up-, downstream) U1W and U2W are interpreted as awake or acknowledge
signals (see figures below).
Data Sheet
Awake Protocol
State Diagram Example
C/I Channel Indication
Transmitted U-Signal
State Name
(DOUT)
OUT
68
IN
Functional Description
®
PEF 82902
SM_expl.emf
-2 standard
2001-11-09