MT9076
Preliminary Information
20.6
Bit
Master Status 1 (Page03H) (E1)
Name
Functional Description
7
6
5
4
3
2
SYNC
Receive Basic Frame Alignment. SYNC indicates the basic frame alignment status (1 -
loss; 0 - acquired).
MFSYNC Receive Multiframe Alignment. MFSYNC indicates the multiframe alignment status (1 -
loss; 0 -acquired).
CRCSYN Receive CRC-4 Synchronization. CRCSYN indicates the CRC-4 multiframe alignment
status (1 - loss; 0 - acquired).
REB1
REB2
Receive E-Bit One Status. REB1 indicates the status of the received E1 bit of the last
multiframe.
Receive E-Bit Two Status. REB2 indicates the status of the received E2 bit of the last
multiframe.
CRCRF
CRC-4 Reframe. A one indicates that the receive CRC-4 multiframe synchronization could
not be found within the time out period of 8 msec. after detecting basic frame
synchronization. This will force a reframe when the maintenance option is selected and
automatic CRC-4 interworking is de-selected.
1
0
RED
RED Alarm. RED goes high when basic frame alignment has been lost for at least 100
msec. This bit will be low when basic frame alignment is acquired (I.431).
CRCIWK CRC-4 Interworking. CRCIWK indicates the CRC-4 interworking status (1 - CRC-to-CRC;
0 - CRC-to-non-CRC).
Table 118 - Synchronization Status Word
(Page 3, Address 10H) (E1)
110