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PEB 20550
PEF 20550
Operational Description
Semiconductor Group
107
01.96
The resetting of the complete CM takes 256 RCL-clock cycles. During this time, the
EPIC.STAR:MAC-bit is set to logical 1.
3.8.2.3 Initialization of Pre-processed Channels
After the CM-reset, all CFI time slots are unassigned. If the CFI is used as a plain PCM-
interface, i.e. containing only switched channels (B-channels), the initialization steps
below are not required. The initialization of pre-processed channels applies only to IOM-
or SLD-applications.
An IOM- or SLD-"channel" consists of four consecutive time slots. The first two time
slots, the B-channels need not be initialized since they are already set to unassigned
channels by the CM-reset command. Later, in the application phase of the software, the
B-channels can be dynamically switched according to system requirements. The last two
time slots of such an IOM- or SLD-channel, the pre-processed channels must be
initialized for the desired functionality. There are five options that can be selected:
Table 16
Pre-processed Channel Options at the CFI
Also refer to
figure 49
.
Even CFI Time Slot
Odd CFI Time Slot
Main
Application
IOM-1 or IOM-2
digital subscriber
Monitor/feature control channel
Monitor/feature control channel
Monitor/feature control channel
Monitor/feature control channel
Monitor/feature control channel
4-bit C/I-channel, D-channel
handled by SACCO-A and D-ch.
arbiter
4-bit C/I-channel, D-channel not
switched (decentral D-ch.
handling)
4-bit C/I-channel, D-channel
switched (central D-ch. handling)
6-bit SIG-channel
8-bit SIG/channel
IOM-1 or IOM-2
digital subscriber
IOM-1 or IOM-2
digital subscriber
IOM-2, analog
subscriber
SLD, analog
subscriber