- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄376463 > XRT86L30IB (EXAR CORP) Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 PDF資料下載
參數(shù)資料
| 型號(hào)： | XRT86L30IB |
| 廠商： | EXAR CORP |
| 元件分類(lèi)： | 數(shù)字傳輸電路 |
| 英文描述： | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
| 中文描述： | DATACOM, FRAMER, PQFP128 |
| 封裝： | 14 X 20 MM, 1.4 MM HEIGHT, TQFP-128 |
| 文件頁(yè)數(shù)： | 233/284頁(yè) |
| 文件大?。?/td> | 4058K |
| 代理商： | XRT86L30IB |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)第28頁(yè)第29頁(yè)第30頁(yè)第31頁(yè)第32頁(yè)第33頁(yè)第34頁(yè)第35頁(yè)第36頁(yè)第37頁(yè)第38頁(yè)第39頁(yè)第40頁(yè)第41頁(yè)第42頁(yè)第43頁(yè)第44頁(yè)第45頁(yè)第46頁(yè)第47頁(yè)第48頁(yè)第49頁(yè)第50頁(yè)第51頁(yè)第52頁(yè)第53頁(yè)第54頁(yè)第55頁(yè)第56頁(yè)第57頁(yè)第58頁(yè)第59頁(yè)第60頁(yè)第61頁(yè)第62頁(yè)第63頁(yè)第64頁(yè)第65頁(yè)第66頁(yè)第67頁(yè)第68頁(yè)第69頁(yè)第70頁(yè)第71頁(yè)第72頁(yè)第73頁(yè)第74頁(yè)第75頁(yè)第76頁(yè)第77頁(yè)第78頁(yè)第79頁(yè)第80頁(yè)第81頁(yè)第82頁(yè)第83頁(yè)第84頁(yè)第85頁(yè)第86頁(yè)第87頁(yè)第88頁(yè)第89頁(yè)第90頁(yè)第91頁(yè)第92頁(yè)第93頁(yè)第94頁(yè)第95頁(yè)第96頁(yè)第97頁(yè)第98頁(yè)第99頁(yè)第100頁(yè)第101頁(yè)第102頁(yè)第103頁(yè)第104頁(yè)第105頁(yè)第106頁(yè)第107頁(yè)第108頁(yè)第109頁(yè)第110頁(yè)第111頁(yè)第112頁(yè)第113頁(yè)第114頁(yè)第115頁(yè)第116頁(yè)第117頁(yè)第118頁(yè)第119頁(yè)第120頁(yè)第121頁(yè)第122頁(yè)第123頁(yè)第124頁(yè)第125頁(yè)第126頁(yè)第127頁(yè)第128頁(yè)第129頁(yè)第130頁(yè)第131頁(yè)第132頁(yè)第133頁(yè)第134頁(yè)第135頁(yè)第136頁(yè)第137頁(yè)第138頁(yè)第139頁(yè)第140頁(yè)第141頁(yè)第142頁(yè)第143頁(yè)第144頁(yè)第145頁(yè)第146頁(yè)第147頁(yè)第148頁(yè)第149頁(yè)第150頁(yè)第151頁(yè)第152頁(yè)第153頁(yè)第154頁(yè)第155頁(yè)第156頁(yè)第157頁(yè)第158頁(yè)第159頁(yè)第160頁(yè)第161頁(yè)第162頁(yè)第163頁(yè)第164頁(yè)第165頁(yè)第166頁(yè)第167頁(yè)第168頁(yè)第169頁(yè)第170頁(yè)第171頁(yè)第172頁(yè)第173頁(yè)第174頁(yè)第175頁(yè)第176頁(yè)第177頁(yè)第178頁(yè)第179頁(yè)第180頁(yè)第181頁(yè)第182頁(yè)第183頁(yè)第184頁(yè)第185頁(yè)第186頁(yè)第187頁(yè)第188頁(yè)第189頁(yè)第190頁(yè)第191頁(yè)第192頁(yè)第193頁(yè)第194頁(yè)第195頁(yè)第196頁(yè)第197頁(yè)第198頁(yè)第199頁(yè)第200頁(yè)第201頁(yè)第202頁(yè)第203頁(yè)第204頁(yè)第205頁(yè)第206頁(yè)第207頁(yè)第208頁(yè)第209頁(yè)第210頁(yè)第211頁(yè)第212頁(yè)第213頁(yè)第214頁(yè)第215頁(yè)第216頁(yè)第217頁(yè)第218頁(yè)第219頁(yè)第220頁(yè)第221頁(yè)第222頁(yè)第223頁(yè)第224頁(yè)第225頁(yè)第226頁(yè)第227頁(yè)第228頁(yè)第229頁(yè)第230頁(yè)第231頁(yè)第232頁(yè)當(dāng)前第233頁(yè)第234頁(yè)第235頁(yè)第236頁(yè)第237頁(yè)第238頁(yè)第239頁(yè)第240頁(yè)第241頁(yè)第242頁(yè)第243頁(yè)第244頁(yè)第245頁(yè)第246頁(yè)第247頁(yè)第248頁(yè)第249頁(yè)第250頁(yè)第251頁(yè)第252頁(yè)第253頁(yè)第254頁(yè)第255頁(yè)第256頁(yè)第257頁(yè)第258頁(yè)第259頁(yè)第260頁(yè)第261頁(yè)第262頁(yè)第263頁(yè)第264頁(yè)第265頁(yè)第266頁(yè)第267頁(yè)第268頁(yè)第269頁(yè)第270頁(yè)第271頁(yè)第272頁(yè)第273頁(yè)第274頁(yè)第275頁(yè)第276頁(yè)第277頁(yè)第278頁(yè)第279頁(yè)第280頁(yè)第281頁(yè)第282頁(yè)第283頁(yè)第284頁(yè)
XRT86L30
SINGLE T1/E1/J1 FRAMER/LIU COMBO
PRELIMINARY
12.0 ALARMS AND ERROR CONDITIONS
The XRT86L30 T1/J1/E1 quad Framer can be configured to monitor quality of received DS1 frames. It can
generate error indicators if the local receive framer has received error frames from the remote terminal. If cor-
responding interrupt is enabled, the local microprocessor operation is interrupted by these error conditions.
Upon microprocessor interruption, the user can intervene by looking into the error conditions.
At the same time, the user can configure the XRT86L30 framer to transmit alarms and error indications to re-
mote terminal. Different alarms and error indications will be transmitted depending on the error condition.
The section below gives a brief discussion of the error conditions that can be detected by the XRT86L30 fram-
er and error indications that will be generated.
12.1 AIS A
LARM
As we discussed before, transmission of Alarm Indication Signal (AIS) or Blue Alarm by the intermediate node
indicates that the equipment is still functioning but unable to offer services. It is an all ones (except for framing
bits) pattern which can be used by the equipment further down the line to maintain clock recovery and timing
synchronization.
The XRT86L30 framer can detect two types of AIS in DS1 mode:
Framed AIS
Unframed AIS
Unframed AIS is an all ones pattern. If unframed AIS is sent, the equipment further down the line will be able to
maintain timing synchronization and be able to recover clock from the received AIS signal. However, due to the
lack of framing bits, the equipment farther down the line will not be able to maintain frame synchronization and
will declare Loss of Frame (LOF).
On the other hand, the payload portion of a framed AIS pattern is all ones. However, a framed AIS pattern still
has correct framing bits. Therefore, the equipment further down the line can still maintain frame synchroniza-
tion as well as timing synchronization. In this case, no LOF or Red alarm will be declared.
The Alarm indication logic within the Receive Framer block of the XRT86L30 framer monitors the incoming
DS1 frames for AIS. AIS alarm condition are detected and declared according to the following procedure:
1.
The incoming DS1 frames are monitored for AIS detection. AIS detection is defined as an unframed or
framed pattern with less than three zeros in two consecutive frames.
2.
An AIS detection counter within the Receive Framer block of the XRT86L30 counts the occurrences of AIS
detection over a 6 ms interval. It will indicate a valid AIS flag when twenty-two or more of a possible twenty-
four AIS are detected.
3.
Each 6 ms interval with a valid AIS flag increments a flag counter which declares AIS alarm when 255 valid
flags have been collected.
Therefore, AIS condition has to be persisted for 1.53 seconds before AIS alarm condition is declared by the
XRT86L30 framer.
If there is no valid AIS flag over a 6ms interval, the Alarm indication logic will decrement the flag counter. The
AIS alarm is removed when the counter reaches 0. That is, AIS alarm will be removed if over 1.53 seconds,
there is no valid AIS flag.
The Alarm Indication Signal Detection Select bits of the Alarm Generation Register (AGR) enable the two types
of AIS detection that are supported by the XRT86L30 framer. The table below shows configurations of the
Alarm Indication Signal Detection Select bits of the Alarm Generation Register (AGR).
REV. P1.0.1
228
ALARM GENERATION REGISTER (AGR) (ADDRESS = 0X0108H)
B
IT
N
UMBER
B
IT
N
AME
B
IT
T
YPE
B
IT
D
ESCRIPTION
1-0
AIS Detection Select
R/W
00 - AIS alarm detection is disabled.When this bit is set to 01:Detection of
unframed AIS alarm of all ones pattern is enabled.
10 - AIS alarm detection is disabled.When this bit is set to 00:Detection of framed
AIS alarm of all ones pattern except for framing bits is enabled.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| XRT86SH221 | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
| XRT86SH221IB | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
| XRT86SH328 | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
| XRT86SH328_07 | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
| XRT86SH328IB | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XRT86L30IV | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
| XRT86L30IV-F | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
| XRT86L32IB | 制造商:Exar Corporation 功能描述: |
| XRT86SH221 | 制造商:EXAR 制造商全稱(chēng):EXAR 功能描述:SDH-TO-PDH FRAMER/MAPPER WITH INTEGRATED 21-CHANNEL E1 SH LIU |
| XRT86SH221_08 | 制造商:EXAR 制造商全稱(chēng):EXAR 功能描述:SDH-TO-PDH FRAMER/MAPPER WITH INTEGRATED 21-CHANNEL E1 SH LIU |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。