PEB 2091
PEF 2091
Operational Description
Verification Control for Additional Overhead Bits
Table 27 gives the available settings for Additional Overhead Bits (M51, M52, M61)
filtering via MON-8 command.
Table 27
Setting Filtering Method for Additional Overhead Bits
Code
Symbol
Function
D7-D0 (Bin)1)
1000 1010
TLL
A change in at least one of the Additional Overhead Bits will
(Default, be passed via MON-2 only after valid triple last look. This is
not RP) the default setting after reset in all non repeater modes
1000 1001
1000 1011
1000 1000
CRC
A change in at least one of the Additional Overhead Bits will
be passed via MON-2 only if the CRC is valid for the last two
(Default, superframes, not including the current one.
RP)
This is the default setting after reset in the repeater modes
TLL,
CRC
A change in at least one of the Additional Overhead Bits will
be passed via MON-2 only after valid triple last look, and if
the CRC is valid for the last two superframes, not including
the current one
On
Every change in at least one of the Additional Overhead Bits
Change will be passed via MON-2
1) see Table 25 for definition
Reset behavior
MON-2 messages will be issued only if the Receiver is synchronized. This is done to
avoid meaningless MON-2 messages if data transmission is not synchronized.
In other words, MON-2 messages will be issued only in the following states:
In the LT Mode (page 147): "Line Active", "Pend. Transparent", "S/T Deactivated",
"Pend. Deactivation" and "Transparent".
In the NT Mode (page 161): "Synchronized 1", "Synchronized 2", "Wait for Act",
"Transparent", "ERROR S/T", "Pend. Deact. S/T", "Pend. Deact. U" and "Analog Loop
Back".
In the LT-Repeater Mode (page 174): "Pend. Transparent", "Transparent", "Pend.
Deactivation".
In the NT-Repeater Mode (page 175): "Synchronized", "Transparent", "ERROR",
"Pend. Deact." and "Analog Loop Back".
Mode setting via MON-8 will be reset only if the "Test" state is entered (see "State
Machine in LT Modes", page 146), i.e. after UVD, Hardware Reset, Software Reset or
Power-On Reset.
Semiconductor Group
123
Data Sheet 01.99
INFINEON [ Infineon ]
