參數(shù)資料
型號： MT9075AP
廠商： Mitel Networks Corporation
英文描述： E1 Single Chip Transceiver
中文描述： 素E1單芯片收發(fā)器
文件頁數(shù)： 46/78頁
文件大?。?/td> 1008K
代理商： MT9075AP
MT9075A
Preliminary Information
4-174
Table 42 - Alarm Status Word One
(Page 03H, Address 19H)
Table 43 - Changed S
Report Word
(Page 03H, Address 1AH)
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
submultiframe 1 was error free.
Updated on a submultiframe 1
basis.
zero,
the
last
6
CRCS2
Receive CRC Error Status Two.
If
one, the evaluation of the last
received submultiframe 2 resulted in
an
error.
If
submultiframe 2 was error free.
Updated on a submultiframe 2
basis.
zero,
the
last
5
RFAIL
Remote
Generator/Detector Failure.
If one,
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 Indication.
If one, indicates the presence of a
loss of signal condition. If zero,
indicates normal operation. A loss
of signal condition occurs when 255
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 255 contiguous pulse
positions starting with a pulse.
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 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
determined by the control bit ASEL
(page 01H, address 10H).
detection
is
1
RAIS
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.
0
RCRS
RAI and Continuous CRC Error
Status.
If one, there is currently an
RAI and continuous CRC error
condition. If zero, normal operation.
Updated on a multiframe basis.
Bit
Name
Functional Description
7
S
a5
S
a5
Bit (latched by C8S
a6
).
It is
cleared once this register is read.
6-3
S
a6
nibble
S
a6
Nibble (latched by C8S
a6
).
It is
cleared once this register is read.
2
---
Unused
1
C8S
a6
Eight Consecutive S
a6
nibbles.
Upon detection of the eighth
consecutive S
a6
nibble with the
same pattern, this bit goes high. It is
cleared once this register is read.
0
CS
a6
Changed
detection of a change of state within
the received S
a6
nibbles, this bit
goes high. It is cleared once this
register is read.
S
a6
nibble.
Upon
Bit
Name
Functional Description
7 - 0
ID7-0
Contains device code 10101010.
Table 44 - Identification Word
(Page 03H, Address 1FH)
Bit
Name
Functional Description
Table 42 - Alarm Status Word One
(Page 03H, Address 19H)(continued)
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