參數(shù)資料
型號： MT9074AL
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)： 83/122頁
文件大?。?/td> 372K
代理商： MT9074AL
Advance Information
MT9074
83
Bit
Name
Functional Description
7
SYNC
Receive Basic Frame Alignment
.
SYNC indicates the basic frame
alignment status (1 - loss; 0 -
acquired).
6
MFSYNC
Receive Multiframe Alignment
.
MFSYNC indicates the multiframe
alignment status (1 - loss; 0 -
acquired).
5
CRCSYN
Receive CRC-4 Synchronization
.
CRCSYN indicates the CRC-4
multiframe alignment status (1 -
loss; 0 - acquired).
4
REB1
Receive E-Bit One Status
. REB1
indicates the status of the received
E1 bit of the last multiframe.
3
REB2
Receive E-Bit Two Status
. REB2
indicates the status of the received
E2 bit of the last multiframe.
2
CRCRF
CRC-4 Reframe.
A one indicates
that the receive CRC-4 multiframe
synchronization could not be found
within the time out period of 8 msec.
after
detecting
synchronization. This will force a
reframe when the maintenance
option is selected and automatic
CRC-4 interworking is de-selected.
basic
frame
1
RED
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).
0
CRCIWK
CRC-4
Interworking
.
CRCIWK
indicates the CRC-4 interworking
status (1 - CRC-to-CRC; 0 - CRC-
to-non-CRC).
Table 103 - Synchronization Status Word
(Page 3, Address 10H) (E1)
Bit
Name
Functional Description
7
CRCS1
Receive CRC Error Status One
.
If one, the evaluation of the last
received submultiframe 1 resulted
in an error. If zero, the last
submultiframe 1 was error free.
Updated on a submultiframe 1
basis.
6
CRCS2
Receive CRC Error Status Two
.
If one, the evaluation of the last
received submultiframe 2 resulted
in an error. If zero, the last
submultiframe 2 was error free.
Updated on a submultiframe 2
basis.
5
RFAIL
Remote
Generator/Detector Failure
. If
one, then each of the previous five
seconds have an E-bit error count
of greater than 989, and for this
same period the receive RAI bit
was zero (no remote alarm), and
for the same period the SYNC bit
was equal to zero (basic frame
alignment has been maintained). If
zero, indicates normal operation.
CRC-4
Multiframe
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
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.
when
192
3
AIS16S
Alarm
Status
. If one, indicates an all
ones alarm is being received in
channel 16. If zero, normal
operation. Updated on a frame
basis.
Indication
Signal
16
2
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 104 - Alarm Status Word 1
(Page 3, Address 11H) (continued) (E1)
相關PDF資料
PDF描述
MT9074AP T1/E1/J1 Single Chip Transceiver
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