Functional Description
MODE:DIM2-0 to 001 or 011.
Selection of the Priority Class
The priority class (priority 8 or priority 10) is selected by transferring the appropriate activation
command via the Command/Indicate (C/I) channel of the IOM interface to the layer-1
controller. If the activation of the S interface is initiated by a TE, the priority class is selected
implicitly by the choice of the activation command. If the S interface is activated from the NT,
an activation command selecting the desired priority class should be programmed at the TE
on reception of the activation indication (AI8). In the activated state, the priority class may be
changed whenever required simply by programming the respective activation request
command (AR8 or AR10). The following table summarizes the C/I codes used for setting the
priority classes:
Table 6
Priority Commands/Indications for TE/LT-T Mode
Command (upstream)
Abbr.
Code
Remarks
Activate request, set priority 8
AR8
1000
Activation command: Set D-channel
priority to 8
Activate request, set priority 10
AR10
1001
Activation command: Set D-channel
priority to 10
Indication (downstream)
Abbr.
Code
Remarks
Activate indication with priority
class 8
AI8
1100
Info 4 received: D-channel priority is 8
or 9
Activate indication with priority
class 10
AI10
1101
Info 4 received: D-channel priority is
10 or 11
Semiconductor Group
99
INFINEON [ Infineon ]
