PEB 20550
PEF 20550
Operational Description
Semiconductor Group
98
01.96
Figure 48
Pre-processed Channel Codes
ITD05846
Signaling Channel
Feature Control Channel
SIG
m
m
m
m
m
m
m
m
Control Channel
Monitor Channel
m
m
SIG
m
m
m
m
m
m
m
m
D
D
m m m m m m m m
C/I
m m
Monitor Channel
Control Channel
Control Channel
Monitor Channel
m
m
C/I
m
m
m
m
m
m
m
m
1
1
0
1
0
1
0
1
X X
X X
X
0 0 0 0
X X
X
C/I
1
1
1
0
0
0
1
1
1
1 0 0 0
1 1
1
C/I
X
X
0
1
0
1
1 0 1 1
Odd Time-Slot
Even Time-Slot
Upstream Preprocessed Channels
Input from the Configurable Interface
Odd Control Memory Address
MAAR = 1......1
Code Field
MACR = 011...
Data Field
MADR = ......
MADR = ......
Data Field
MACR = 0111...
Code Field
MAAR = 1......1
Even Control Memory Address
(e.g. SLD)
Signaling
8 Bit
6 Bit
Signaling
IOM )
R
(e.g. analog
Handling
D Channel
Central
Handling
D Channel
Decentral
SIG Actual Value
SIG Stable Value
X X
-
-
: Monitor channel bits, these bits are treated by the monitor/feature control handler
: Inactive sub. time-slot, in downstream direction these bits are tristated (OMDR : COS = 0) or set to logical 1 (OMDR :COS = 1)
: Command/Indication channel, these bits are exchanged between the CFI in/output and the CM data field. A change of
the C/I bits in upstream direction causes an interrupt (ISTA : SFI). The address of the change is stored in the CIFIFO
m
-
C/I
D
: D channel, these D channel bit switched to and from the PCM interface, or handled by the SACCO_A,
it the D channel arbiter is enabled.
SIG
actual value
stable value
: Signaling Channel, these bits are exchanged between the CFI in/output and tne CM data field. The SIG value which
was present in the last frame is stored as the actual value in the even address CM location. The stable value is updated
if a valid change in the actual value has been detected according to the last look algorithm. A change of the SIG stable
value in upstream direction causes an interrupt (ISTA : CFI). The address of the change is stored in the CIFIFO.
Time-Slot
PCM Code for
Pointer to a PCM Time-Slot
DU Application
SIG Actual Value
SIG Stable Value
ITD05845
Decentral
D Channel
Handling
Central
D Channel
Handling
Signaling
(e.g. analog
R
IOM )
6 Bit
8 Bit
Signaling
(e.g. SLD)
SACCO_A
D Channel
Handling
DD Application
Even Control Memory Address
MAAR = 0......0
Code Field
MACR = 0111...
Data Field
MADR = ......
MADR = ......
Data Field
MACR = 0111...
Code Field
MAAR = 0......1
Odd Control Memory Address
Output at the Configurable Interface
Downstream Preprocessed Channels
Even Time-Slot
Odd Time-Slot
1 0 1 0
1 1
1
C/I
M
R
When using handshaking, set MR = 1
SIG
0
1
0
1
1 0 1 0
SIG
1 1
C/I
1
1
1
0
1
0
1
1
1
1 0 0 0
1 1
1
C/I
X
X
X
1
1
0
1
X
X
X
X
X
X X
X X
X
1 0 1 1
X X
X
X X
X X
X
1 0 1 1
X X
X
X X
X X
X
1 0 1 1
X X
X
Pointer to a PCM Time-Slot
PCM Code for
a 2 Bit Sub.
Time-Slot
m m m m m m m m
C/I
m m
Monitor Channel
Control Channel
Control Channel
Monitor Channel
m
m
C/I
m
m
m
m
m
m
m
m
D D
m m m m m m m m
SIG
m m
Monitor Channel
Control Channel
m m m m m m m m
SIG
Feature Control Channel
Signaling Channel
D
D
m m m m m m m m
C/I
m m
Monitor Channel
Control Channel
-
-