MT9079AC MITEL [Mitel Networks Corporation], MT9079AC Datasheet - Page 34

• Manufacturer Part Number: MT9079AC
• Manufacturer: MITEL [Mitel Networks Corporation]

MT9079
4-270
6 - 0
Bit
Bit
7
6
5
4
3
2
1
0
7
Table 52 - Receive Frame Alignment Signal
RFA2-8
Name
CRCT
Name
1SEC
2SEC
CALN
400T
RIU0
EBT
Table 53 - Timer Status Word
8T
---
(Page 3, Address 12H)
(Page 3, Address 11H)
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.
2 to 8. These bit are received on the
PCM 30 2048 kbit/sec. link in bit
positions two to eight of frame align-
ment signal. These bits form the
frame alignment signal and should
be 0011011.
One Second Timer Status. This bit
changes state once every 0.5 sec-
onds and is synchronous with the
2SEC timer.
Two Second Timer Status. This bit
changes state once every second
and is synchronous with the 1SEC
timer.
CRC-4
changes from one-to-zero at the start
of the one second interval in which
CRC errors are accumulated. This bit
stays high for 8 msec.
E-Bit Timer Status. This bit changes
from one-to-zero at the start of the
one second interval in which E-bit
errors are accumulated. This bit
stays high for 8 msec.
400 msec. Timer Status. This bit
changes state when the 400 msec.
CRC-4 multiframe alignment timer
expires.
8 msec. Timer
changes state when the 8 msec.
CRC-4 multiframe alignment timer
expires.
CRC-4 Alignment. When CRC-4 mul-
tiframe alignment has not been
achieved this bit changes state every
2 msec. When CRC-4 multiframe
alignment has been achieved this bit
is synchronous with the receive
CRC-4 multiframe signal.
Unused.
Receive International Use Zero. This
Receive Frame Alignment Signal Bits
Functional Description
Functional Description
Timer
Status.
Status. This bit
This
bit
4 - 0
7 - 4
1 - 0
Table 55 - Receive Multiframe Alignment Signal
Table 54 - Receive Non-frame Alignment Signal
Bit
Bit
7
6
5
3
2
RMA1-4
RNU4-8
RNFAB
Name
Name
X2, X3
RALM
RIU1
X1
Y
(Page 3, Address 13H)
(Page 3, Address 14H)
Receive International Use 1. This bit
is received on the PCM 30 2048
kbit/sec. link in bit position one of the
non-frame alignment signal. It is
used for CRC-4 multiframe alignment
or international use.
Receive Non-frame Alignment Bit.
This bit is received on the PCM 30
2048 kbit/sec. link in bit position two
of the non-frame alignment signal.
This bit should be one in order to dif-
ferentiate between frame alignment
frames and non-frame alignment
frames.
Receive Alarm. This bit is received
on the PCM 30 2048 kbit/sec. link in
bit position three of the non-frame
alignment signal. It is used to indicate
an alarm from the remote end of the
PCM 30 link (1 - alarm, 0 - normal).
Receive National Use Four to Eight.
These bits are received on the PCM
30 2048 kbit/sec. link in bit positions
four to eight of the non-frame align-
ment signal.
Receive Multiframe Alignment Bits
One to Four. These bits are received
on the PCM 30 2048 kbit/sec. link in
bit positions one to four of time slot
16 of frame zero of every multiframe.
These bit should be 0000 for proper
multiframe alignment.
Receive Spare Bit X1. This bit is
received on the PCM 30 2048
kbit/sec. link in bit position five of
time slot 16 of frame zero of every
multiframe.
Receive Y-bit Alarm. This bit is
received on the PCM 30 2048
kbit/sec. link in bit position six of time
slot 16 of frame zero of every multi-
frame. It indicates loss of multiframe
alignment at the remote end (1 -loss
of multiframe alignment; 0 - multi-
frame alignment acquired).
These bits are received on the PCM
30 2048 kbit/sec. link in bit positions
seven and eight respectively, of time
slot 16 of frame zero of every multi-
frame.
Receive Spare Bits X2 and X3.
Functional Description
Functional Description