PSF21150 INFINEON [Infineon Technologies AG], PSF21150 Datasheet - Page 75

• Manufacturer Part Number: PSF21150
• Description: IPAC-X ISDN PC ADAPTER CIRCUIT
• Manufacturer: INFINEON [Infineon Technologies AG]

State machines are the key to understanding the transceiver part of the IPAC-X. They
include all information relevant to the user and enable him to understand and predict the
behaviour of the IPAC-X. The state diagram notation is given in
informations contained in the state diagrams are:
– state name (based on ITU I.430)
– S/T signal transmitted (INFO)
– C/I code received
– C/I code transmitted
– transition criteria
The coding of the C/I commands and indications are described in detail in
Figure 40
The following example illustrates the use of a state diagram with an extract of the TE
state diagram. The state explained is “F3 deactivated”.
The state may be entered:
– from the unconditional states (ARL, RES, TM)
– from state “F3 pending deactivation”, “F3 power up”, “F4 pending activation” or “F5
The following informations are transmitted:
– INFO 0 (no signal) is sent on the S/T-interface.
C/I message “DC” is issued on the IOM-2 interface.
The state may be left by either of the following methods:
– Leave for the state “F3 power up” in case C/I = “TIM” code is received.
– Leave for state “F4 pending activation” in case C/I = AR8 or AR10 is received.
Data Sheet
unsynchronized” after the C/I command “DI” has been received.
State Diagram Notation
S / T Interface
INFO
IOM-2 Interface
C /
IPAC
IPAC-X
OUT
Ind.
i
x
State
Cmd.
IPAC
75
i
IN
r
Description of Functional Blocks
Unconditional
Transition
ITD09657
Figure
Chapter
PSB 21150
PSF 21150
2000-07-21
40. The
3.5.4.