參數(shù)資料
型號： MT9074
廠商： Mitel Networks Corporation
英文描述： T1/E1/J1 Single Chip Transceiver
中文描述： T1/E1/J1收發(fā)單芯片收發(fā)器
文件頁數(shù)： 87/122頁
文件大?。?/td> 372K
代理商： MT9074
Advance Information
MT9074
87
Bit
Name
Functional Description
7-4
RMAI1-4
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 signalling
multiframe. These bit should be 0000
for
proper
alignment.
signalling
multiframe
3
X1
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 signalling
multiframe.
2
Y
Receive Y-bit.
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 signalling multiframe.
The Y bit may indicate loss of
multiframe alignment at the remote
end (1 -loss of multiframe alignment;
0 - multiframe alignment acquired).
1-0
X2, X3
Receive Spare Bits X2 and X3.
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
signalling multiframe.
Table 112 - Receive Multiframe Alignment Signal
(Page 3, Address 19H) (E1)
Bit
Name
Functional Description
7
RAIS
Remote
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
basis.
Alarm
Indication
frame
6
AISS
Alarm
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.
Indication
Status
Table 113 - Alarm Status Word 2
(Page 3, Address 1BH) (E1)
5
AIS16S
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.
4
LOSS
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
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.
bit
3
AUXPS
Auxiliary Pattern Status
. This
bit goes high when a continuous
101010... bit stream (Auxiliary
Pattern) is received on the PCM
30 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.
2
MFALMS
Multiframe Alarm Status
. This
bit goes high in the event of
receipt of a multiframe alarm. It
goes low when the received
multiframe alarm bit goes low.
1
RSLIPS
Receive Slip Status
. A change
of state (i.e., 1-to-0 or 0-to-1)
indicates
that
controlled
frame
occurred.
a
receive
slip
has
0
- - -
Unused
.
Bit
Name
Functional Description
7-0
ID7-0
ID Number.
Contains device code
10101111
Table 114 - Identification Word
(Page 3, Address 1FH) (E1)
Bit
Name
Functional Description
Table 113 - Alarm Status Word 2
(Page 3, Address 1BH) (E1)
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PDF描述
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