PEF24901HV22XT Lantiq, PEF24901HV22XT Datasheet - Page 55

• Manufacturer Part Number: PEF24901HV22XT
• Manufacturer: Lantiq

Specifications of PEF24901HV22XT

• Control Interface: HDLC
• Lead Free Status / Rohs Status: Compliant

AR1
AR2
AR4
DC
DEAC
LTD
3.5.10
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 16
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 machine is 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.
Data Sheet
Activation Request Loop 1
Activation Request Loop 2
Activation Request Loop 4
Deactivation Confirmation
Deactivation Accepted
LT Disable
State Machine Notation
State Diagram Example
C/I Channel Indication
Transmitted U-Signal
State Name
(DOUT)
OUT
IN
56
RES
RSY
SSP
DT
UAI
SM_expl
Reset
Resynchronization Indication
Send-Single-Pulses
Data Through Mode
U Activation Indication
Functional Description
®
PEF 24901
-2 standard
2002-09-30
DFE-T