- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄383876 > T7698 (Lineage Power) Quad T1/E1 Line Interface and Octal T1/E1 Monitor(四T1/E1線接口和八T1/E1監(jiān)控器) PDF資料下載
參數(shù)資料
| 型號(hào)： | T7698 |
| 廠商： | Lineage Power |
| 英文描述： | Quad T1/E1 Line Interface and Octal T1/E1 Monitor(四T1/E1線接口和八T1/E1監(jiān)控器) |
| 中文描述： | 四T1/E1線路接口和八路的T1/E1監(jiān)視器（四個(gè)T1/E1線接口和八T1/E1的監(jiān)控器） |
| 文件頁數(shù)： | 66/112頁 |
| 文件大小： | 1359K |
| 代理商： | T7698 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁當(dāng)前第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁第105頁第106頁第107頁第108頁第109頁第110頁第111頁第112頁
Data Sheet
January 1999
T7698 Quad T1/E1 Line Interface and Octal T1/E1 Monitor
66
Lucent Technologies Inc.
Frame Monitors
(continued)
Alarms and Performance Monitoring
The T7698 receive frame monitor monitors the receive line data for alarm conditions and error events and presents
this information to the system through the microprocessor interface status registers. The updating of the status reg-
isters is controlled by the receive line clock signal. When the line clock is lost, then the updating of all status infor-
mation is corrupted.
The alarm conditions monitored on the received line interface are:
1.
Red alarm
or the
loss of frame alignment
indication. The red alarm indicates that the receive frame
alignment for the line has been lost and the data cannot be properly extracted. The loss of frame condition for
the various framing formats is defined in Table 37.
2.
Severely errored frame (SEF) alarm (DS1 only).
This alarm is determined by examining contiguous time
windows for framing bit errors. For D4, DDS, and SLC-96 framing modes, the window size is 0.75 ms and only
the F
T
bits are examined. For ESF, the window size is 3 ms, and only the F
E
bits are examined. An SEF defect
occurs when two or more framing bit errors in a window are detected. An SEF defect is terminated when the
signal is in-frame and there are less than two framing bit errors in a window.
Yellow alarm
or the
remote frame alarm
. This alarm is an indication that the remote end is in a loss of frame
alignment state. The T7698 detects an incoming remote frame alarm (commonly referred to as a yellow alarm)
for the different framing formats as shown in Table 38.
3.
Table 37. Red Alarm Conditions
Framing Format
D4
SLC-96
DDS
ESF
Red Alarm (Loss of Frame Alignment) Condition
Two incorrect received F
T
framing bits out of four.
Two incorrect received F
T
framing bits out of four.
Three incorrect received framing bits (F
T
, F
S
, or FAS pattern) out of twelve.
Two incorrect received F
E
framing bits out of four, or optionally (if register
Framer_PR14, bit 0 = 0):
Option a (Framer_PR14, bit 1 = 0): 32 CRC-6 errors out of 33 CRC
checks.
Option b (Framer_PR14, bit 1 = 1): >320 CRC-6 errors in one second.
Three consecutive incorrect FAS patterns or three consecutive incorrect NOT
FAS patterns, or optionally (if register Framer_PR14, bit 0 = 0)
≥
915 received
CRC-4 submultiframe errors out of 1000 CRC submultiframe checks.
CEPT
Table 38. Remote Frame Alarm Conditions
Framing Format
D4
D4-Japanese
Remote Frame Alarm Format
Bit 2 of all time slots in the 0 state.
The twelfth (12th) framing bit in the 1 state in two out of three consecutive
superframes.
Bit 6 of time slot 24 in the 0 state in all the word-24 occurrences in a
superframe.
An alternating pattern of eight ones followed by eight zeros in the ESF data
link.
Bit 3 of the NOT FAS frame (A bit) signals the remote frame alarm.
DDS
ESF
CEPT
For register Framer_PR2, bit 0 = 0, one A bit = 1 event required.
For register Framer_PR2, bit 0 = 1, three consecutive A bit = 1 events
required.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| T7705A | SUPPLY-VOLTAGE SUPERVISORS |
| T8100A | H.100/H.110 Interface and Time-Slot Interchanger(H.100/H.110接口和干線時(shí)間段交換機(jī)) |
| T8100 | H.100/H.110 Interface and Time-Slot Interchanger(H.100/H.110接口和干線時(shí)隙交換機(jī)) |
| T8102 | H.100/H.110 Interface and Time-Slot Interchanger(H.100/H.110接口和干線時(shí)隙交換機(jī)) |
| T8105 | H.100/H.110 Interface and Time-Slot Interchanger(H.100/H.110接口和干線時(shí)隙交換機(jī)) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| T77 | 制造商:Thomas & Betts 功能描述:2-1/2"CONDUIT BODY,IRON,T,F-7 制造商:Cooper Crouse-Hinds 功能描述: 制造商:Thomas & Betts 功能描述:Fittings T-Fitting 2.5inch Non-Thread Iron |
| T7700 | 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:Core2 Duo Processors and Core2 Extreme Processors for Platforms Based on Mobile 965 Express Chipset Family |
| T77000150 | 制造商:Assembly Value Added 功能描述: |
| T7705102CA | 制造商:Texas Instruments 功能描述: |
| T7705A | 制造商:TI 制造商全稱:Texas Instruments 功能描述:SUPPLY-VOLTAGE SUPERVISORS |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。