參數(shù)資料
型號： MT9074
廠商： Mitel Networks Corporation
英文描述： T1/E1/J1 Single Chip Transceiver(T1/E1/J1單片收發(fā)器)
中文描述： T1/E1/J1收發(fā)單芯片收發(fā)器（T1/E1/J1收發(fā)單片收發(fā)器）
文件頁數(shù)： 55/120頁
文件大?。?/td> 362K
代理商： MT9074
Advance Information
MT9074
55
Bit
Name
Functional Description
7
TFSYNC
Terminal Frame Synchroniza-
tion
. Indicates the Terminal
Frame Synchronization status (1
- loss; 0 - acquired). For ESF
links terminal frame synchroni-
zation and multiframe synchro-
nization are synonymous.
6
MFSYN
C
Multiframe
Indicates the Multiframe Syn-
chronization status (1 - loss; 0 -
acquired). For ESF links multi-
frame synchronization and ter-
minal frame synchronization are
synonymous.
Synchronization.
5
SE
Severely Errored Frame
. This
bit toggles when 2 of the last 6
received framing bits are in
error.
The
monitored are the ESF framing
bits for ESF links, the Ft bits for
SLC-96 links and a combination
of Ft and Fs bits for D4 links
(See Framing Mode Selection
Word - page 1 address 10H).
framing
bits
4
LOS
Digital Los Of Signal.
This bit
goes high after the detection of
192 consecutive zeros. It returns
low when the incoming pulse
density exceeds 12.5% over a
250 ms period
3 - 0
- - -
Unused
.
Table 45 - Synchronization Status Word
(Page 3, Address 10H) (T1)
Bit
Name
Functional Description
7
D4YALM
D4 Yellow Alarm.
This bit is set if
bit position 2 of virtually every
DS0 channel is a zero for a period
of 600 milliseconds. The alarm is
tolerant of errors by permitting up
to 16 ones in a 48 millisecond
integration period. The alarm
clears in 200 milliseconds after
being removed from the line.
Table 46 - Alarm Status Word
(Page 3, Address 11H) (T1)
6
D4Y48
D4
millisecond sample
. This bit is
set if bit position 2 of virtually
every DS0 channel is a zero for a
period of 48 milliseconds. The
alarm is tolerant of errors by
permitting up to 16 ones in the
integration period. This bit is
updated every 48 milliseconds.
Yellow
Alarm
-
48
5
SECYEL
Secondary D4 Yellow Alarm
.
This bit is set if 2 consecutive ’1’s
are received in the Sbit position of
the 12th frame of the D4
superframe.
4
ESFYEL
ESF Yellow Alarm
. This bit sets if
the
ESF
0000000011111111 is received in
seven or more codewords out of
ten.
yellow
alarm
3
BLUE
Blue Alarm
. This bit is set if less
than 6 zeros are received in a 3
millisecond window.
2
PDV
Pulse Density Violation
. This bit
toggles if RxB8ZS is set high, it
will toggle upon detection of 8
consecutive zeros. If RxB8ZS is
set low, it will toggle upon
detection of 16 consecutive
zeros on the line data, or if there
are less than N ones in a window
of 8(N+1) bits - where N=1 to 23.
1
LLED
Line Loopback Enable Detect.
This bit will be set when a framed
or unframed repeating pattern of
00001 has been detected during a
48 millisecond interval. Up to
fifteen errors are permitted per
integration period.
0
LLDD
Line Loopback Disable Detect
.
This bit will be set when a framed
or unframed repeating pattern of
001 has been detected during a
48 millisecond interval. Up to
fifteen errors are permitted per
integration period.
Bit
Name
Functional Description
Table 46 - Alarm Status Word
(Page 3, Address 11H) (T1)
相關(guān)PDF資料
PDF描述
MT9075B E1 Single Chip Transceiver
MT9075B E1 Single Chip Transceiver(E1單片收發(fā)器)
MT9075 E1 Single Chip Transceiver
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MT9075AL E1 Single Chip Transceiver
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參數(shù)描述
MT9074_05 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:T1/E1/J1 Single Chip Transceiver
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MT9074AL1 制造商:Microsemi Corporation 功能描述:FRAMER E1/J1/T1 5V 100MQFP - Trays
MT9074AP 制造商:Microsemi Corporation 功能描述:
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