pef82902 Infineon Technologies Corporation, pef82902 Datasheet - Page 87

• Manufacturer Part Number: pef82902
• Description: 4b3t Second Generation Modular Isdn Nt Intelligent Extended
• Manufacturer: Infineon Technologies Corporation

Table 20
Timer
T12
T13
2.4.7.5
Below the signals and indications are summarized that are issued on IOM
indications) and on the U-interface (predefined U-signals).
C/I Indications
AI
AIL
AR
ARL
DC
DR
LTD
Data Sheet
Activation Indication
The U-transceiver has established transparency of transmission. The
downstream device is requested to establish layer-1 functionality.
Activation Indication Loop-back
The U-transceiver has established transparency of transmission. The
downstream device is requested to establish a loopback #2.
Activation Request
The downstream device is requested to start the activation procedure.
Activation Request Loop-back
The U-transceiver has detected a loop-back 2 command in the M-channel and
has established transparency of transmission in the direction IOM
interface. The downstream device is requested to start the activation
procedure and to establish a loopback #2.
Deactivation Confirmation
Idle code on the IOM
Deactivation Request
The U-transceiver has detected a deactivation request command from the LT-
side for a complete deactivation. The downstream device is requested to start
the deactivation procedure.
LT Disable
This unconditional command forces the U-transceiver to state ’Test’, where it
transmits U0. No further action is initiated.
Duration (ms)
12
13
Outputs of the U-Transceiver
Timers (cont’d)
®
Function
Prevents the U-transceiver in
state Synchronizing from
immediate transition to state
’Pend. Deactivation’ if U0 is
detected
Supervises U2W repetition
-2 interface.
73
Functional Description
State
Ack. sent / received
Synchronizing
Sending awake-ack.
PEF 81902
2001-11-12
®
®
-2 (C/I
to U-