PEB24911HV13 Lantiq, PEB24911HV13 Datasheet - Page 46

• Manufacturer Part Number: PEB24911HV13
• Manufacturer: Lantiq

Specifications of PEB24911HV13

• Lead Free Status / Rohs Status: Supplier Unconfirmed

– ISW
– SW
– CRC Cyclic Redundancy Check
– EOC Embedded Operation Channel
– ACT
– DEA
– CSO Colt Start Only
– UOA U-Only Activation
– SAI
– FEBE Far-end Block Error
– PS1
– PS2
– NTM NT-Test Mode
– AIB
– NIB
3.8
The last three symbols (6 bits) form the 4 kbit/s M(Maintenance)-channel used for
exchange of operations and maintenance data between the network and the NT.
Approved M-bit data is first processed and then reported to the system by Monitor
channel messages (MON-0, MON-2).
MON-0/ MON-2 - M Bit mapping
The M1-3 bits over four basic frames constitute one complete EOC word. EOC words
are exchanged across the IOM
(M4,M5,M6) of one U-superframe are collected and transported in a MON-2 message.
Figure 18
mapped to MON-0 and MON-2 messages.
M1-6 Filtering Options
To reduce processor load the DFE-Q V2.1 provides several programmable filters for the
issue of MON-0 and MON-2 messages. In the following paragraphs the various
verification algorithms and the provided control mechanism for the overhead bits
(M4,M5,M6) are presented.
The verification method of received M-channel data can be programmed in the MFILT
register using the MON-12 protocol. The following options are provided:
Data Sheet
Inverted Synchronization Word (quad):
Synchronization Word (quad):
Activation bit
Deactivation bit
S-Activity Indicator
Power Status Primary Source
Power Status Secondary Source
Alarm Indication Bit
Network Indication Bit
shows in detail how the maintenance bits of one received U-superframe are
Maintenance Channel
®
-2 interface via MON-0 messages. The overhead bits
36
a
d/m
i
ACT
DEA
CSO
UOA
SAI
FEBE = (0) –> Far-end block error occurred
PS1
PS2
NTM
AIB
NIB
= address bit
= data / message bit
= information (data / message)
= (1) –> Layer 2 ready for communication
= (0) –> LT informs NT that it will turn off
= (1) –> NT-activation with cold start only
= (0) –> U-only activated
= (0) –> S-interface is deactivated
= (1) –> Primary power supply ok ?
= (1) –> Secondary power supply ok ?
= (0) –> NT busy in test mode
= (0) –> Interruption (according to ANSI)
= (1) –> no function (reserved)
+ 3 + 3 – 3 – 3 – 3 + 3 – 3 + 3 + 3
– 3 – 3 + 3 + 3 + 3 – 3 + 3 – 3 – 3
Functional Description
PEF 24911
2001-07-16