mt9074ap1 Zarlink Semiconductor, mt9074ap1 Datasheet - Page 112
mt9074ap1
Manufacturer Part Number
mt9074ap1
Description
T1/e1/j1 Single Chip Transceiver With Wide Dynamic Range Liu
Manufacturer
Zarlink Semiconductor
Datasheet
1.MT9074AP1.pdf
(151 pages)
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7-4
1-0
Bit
Bit
3
2
7
6
5
4
3
RMAI1-4
AIS16S
AUXPS
X2, X3
Name
Name
LOSS
RAIS
AISS
X1
Y
Table 112 - Receive Multiframe Alignment Signal
Table 113 - Alarm Status Word 2
Receive Multiframe Alignment Bits One to Four. These bits are
received on the PCM30 2048 kbit/sec. link in bit positions one to four of
time slot 16 of frame zero of every signaling multiframe. These bit should
be 0000 for proper signaling multiframe alignment.
Receive Spare Bit X1. This bit is received on the PCM30 2048 kbit/sec.
link in bit position five of time slot 16 of frame zero of every signaling
multiframe.
Receive Y-bit. This bit is received on the PCM30 2048 kbit/sec. link in bit
position six of time slot 16 of frame zero of every signaling multiframe.
The Y bit may indicate loss of multiframe alignment at the remote end (1
-loss of multiframe alignment; 0 - multiframe alignment acquired).
Receive Spare Bits X2 and X3. These bits are received on the PCM30
2048 kbit/sec. link in bit positions seven and eight respectively, of time
slot 16 of frame zero of every signaling multiframe.
Remote Alarm Indication Status. If one, there is currently a remote
alarm condition (i.e., received A bit is one). If zero, normal operation.
Updated on a non-frame alignment frame basis.
Alarm Indication Status Signal. If one, indicates that a valid AIS or
all ones signal is being received. If zero, indicates that a valid AIS
signal is not being received. The criteria for AIS detection is
determined by the control bit ASEL.
Alarm Indication Signal 16 Status. If one, indicates an all ones alarm
is being received in channel 16. If zero, normal operation. Updated on a
frame basis.
Loss of Signal Status. If one, indicates the presence of a loss of signal
condition. If zero, indicates normal operation. A loss of signal condition
occurs when 192 consecutive bit periods are zero. A loss of signal
condition terminates when an average ones density of at least 12.5%
has been received over a period of 192 contiguous pulse positions
starting with a pulse.
Auxiliary Pattern Status. This bit goes high when a continuous
101010... bit stream (Auxiliary Pattern) is received on the PCM30 link
for a period of at least 512 bits. If zero, auxiliary pattern is not being
received. This pattern will be decoded in the presence of a bit error rate
of as much as 10-3.
(Page 3, Address 1BH) (E1)
(Page 3, Address 19H) (E1)
Zarlink Semiconductor Inc.
MT9074
112
Functional Description
Functional Description
Data Sheet
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