MT9075A Mitel Networks Corporation, MT9075A Datasheet - Page 42

• Manufacturer Part Number: MT9075A
• Description: E1 Single Chip Transceiver
• Manufacturer: Mitel Networks Corporation

MT9075A
4-170
Bit
7
6
5
4
3
2
1
0
Table 33 - Synchronization Status Word
MFSYNC Receive Multiframe Alignment.
CRCSYN Receive CRC-4 Synchronization.
CRCIWK CRC-4
CRCRF CRC-4 Reframe. A one indicates
SYNC
Name
REB1
REB2
RED
(Page 03H, Address 10H)
Receive Basic Frame Alignment.
SYNC indicates the basic frame
alignment status (1 - loss; 0 -
acquired).
MFSYNC indicates the multiframe
alignment status (1 - loss; 0 -
acquired).
CRCSYN
multiframe alignment status (1 -
loss; 0 - acquired).
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.
that the receive CRC-4 multiframe
synchronization could not be found
within the time out period of 8 msec.
after
synchronization. This will force a
reframe when the maintenance
option is selected and automatic
CRC-4 interworking is de-selected.
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).
indicates the CRC-4 interworking
status (1 - CRC-to-CRC; 0 - CRC-
to-non-CRC).
Functional Description
detecting
Interworking.
indicates
basic
the
CRCIWK
CRC-4
frame
6 - 0
Bit
7
Table 34 - Receive Frame Alignment Signal
RFA2-8 Receive Frame Alignment Signal
Name
RIU0
(Page 03H, Address 11H)
Receive International Use Zero.
This is the bit which is received on
the PCM 30 2048 kbit/sec. link in bit
position one of the frame alignment
signal. It is used for the CRC-4
remainder or for international use.
Bits 2 to 8. These bit are received
on the PCM 30 2048 kbit/sec. link in
bit positions two to eight of frame
alignment signal. These bits form
the frame alignment signal and
should be 0011011.
Preliminary Information
Functional Description