Preliminary Information
MT9076
Bit
Name
Functional Description
7
ASEL
AIS Select. This bit selects the criteria on which the detection of a valid Alarm Indication
Signal (AIS) is based. If zero, the criteria is less than three zeros in a two frame period (512
bits). If one, the criteria is less than three zeros in each of two consecutive double-frame
periods (512 bits per double frame).
6
CRCM
CRC-4 Modification. If one activates the CRC-4 remainder modification function when the
device is in transparent mode. The received CRC-4 remainder is modified to reflect only the
changes in the transmit DL. If zero, time slot zero data from DSTi will not be modified in
transparent mode.
5
4
AUTC
ARAI
Automatic CRC-interworking. If zero, automatic CRC-interworking is activated. If one it is
deactivated. See Framing Algorithm for a detailed description.
Automatic Remote Alarm Indication. if zero, the Remote Alarm Indication bit (the
A bit) will function automatically. That is, RAI=1 when basic synchronization has
been acquired. And, RAI=0 when basic synchronization has not been acquired. if
one, the remote alarm indication bit is controlled through the TALM bit of the transmit Non-
Frame Alignment Control Word.
3
2
AUTY
CSYN
Automatic Y-Bit Operation. If zero, the Y-bit of the transmit multiframe alignment signal will
report the multiframe alignment status to the far end i.e., zero - multiframe alignment
acquired, one - lost. If one, the Y-bit is under the manual control of the Transmit Multiframe
Alignment Control Word.
CRC-4 Synchronization. If zero, basic CRC-4 synchronization processing is activated, and
the TIU0 Bit and the TIU1 bit programming will be overwritten. If one, CRC-4 synchronization
is disabled, the first bits of channel 0 are used as international use bits and are programmed
by the TIU0 and TIU1.
1
0
REFRM
MFRF
Reframe. If one for at least one frame, and then cleared, the device will initiate a search for a
new basic frame position. Reframing function is activated on the one to zero transition of the
REFRM bit.
Multiframe Reframe. If one, for at least one frame, and then cleared the 3VJET will initiate a
search for a new signaling multiframe position. Reframing function is activated on the one to
zero transition of the MFRM bit.
Table 87 - Mode Selection Control Word (E1)
(Page 1, Address 10H)
93
MITEL [ MITEL NETWORKS CORPORATION ]
