- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄376463 > XRT86L30 (Exar Corporation) Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 PDF資料下載
參數(shù)資料
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)當(dāng)前第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)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
REV. P1.0.1
The ANSI T1.403 standard requires that the status of the transmission quality be reported in one-second inter-
vals. The one-second timing may be derived from the DS1 signal or from a separate equally accurate
(±32ppm) source. The phase of the one-second periods does not depend on the time of occurrence of any er-
ror event. A total of four seconds of information is transmitted so that recovery operations may be initiated in
case an error corrupts a message. Counts of events shall be accumulated in each contiguous one-second in-
terval. At the end of each one-second interval, a modulo-4 counter shall be incremented, and the appropriate
performance bits shall be set in bytes 5 and 6 in Format A. These octets and the octets that carry the perfor-
mance bits of the preceding three one-second intervals form the periodic performance report.
The periodic performance report is made up of 14 bytes of data. Bytes 1 to 4, 13, and 14 are the message
header and bytes 5 to 12 contain data regarding the four most-recent one-second intervals. The periodic per-
formance report message uses the SAPI/TEI value of 0x14.
6.7.3
Transmission-Error Event
Occurrences of transmission-error events indicate the quality of transmission. The occurrences that shall be
detected and reported are:
CRC Error Event: A CRC-6 error event is the occurrence of a received CRC code that is not identical to the
corresponding locally calculated code.
Severely Errored Framing Event: A severely-errored-framing event is the occurrence of two or more framing-
bit-pattern errors within a 3-ms period. Contiguous 3-ms intervals shall be examined. The 3-ms period may
coincide with the ESF. The severely-errored-framing event, while similar in form to criteria for declaring a ter-
minal has lost framing, is only designed as a performance indicator; existing terminal out-of-frame criteria will
continue to serve as the basis for terminal alarms.
Frame-Synchronization-Bit Error Event: A frame-synchronization-bit-error event is the occurrence of a
received framing-bit-pattern not meeting the severely-errored-framing event criteria.
Line-Code Violation event: A line-code violation event is a bipolar violation of the incoming data. A line-code
violation event for an B8ZS-coded signal is the occurrence of a received excessive zeros (EXZ) or a bipolar
violation that is not part of a zero-substitution code.
Controlled Slip Event: A controlled-slip event is a replication, or deletion, of a T1 frame by the receiving ter-
minal. A controlled slip may occur when there is a difference between the timing of a synchronous receiving
terminal and the received signal.
6.7.4
Path and Test Signal Identification Message
The path identification message is used to identify the path between the source terminal and the sink terminal.
The test signal identification message is used by test signal generating equipment. Both identification messag-
es are made up of 82 bytes of data. Byte 1 to 4, 81 and 82 are the message header and bytes 5 to 80 contain
six data elements. These messages use the SAPI/TEI value of 0x15 to differentiate themselves from the per-
formance report message.
6.7.5
Frame Structure
The message structure of message-oriented signal is shown in Figure 35. Two format types are shown in the
figure: format A for frames which are sending performance report message and format B for frames which con-
taining a path or test signal identification message. The following abbreviations are used:
SAPI: Service Access Point Identifier
C/R: Command or Response
EA: Extended Address
TEI: Terminal Endpoint Identifier
FCS: Frame Check Sequence
6.7.6
Flag Sequence
All frames shall start and end with the flag sequence consisting of one 0 bit followed by six contiguous 1 bits
and one 0 bit. The flag preceding the address field is defined as the opening flag. The flag following the Frame
Check Sequence (FCS) field is defined as the closing flag. The closing flag may also serve as the opening flag
PRELIMINARY
169
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| XRT86L30IB | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
| 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 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XRT86L30_07 | 制造商:EXAR 制造商全稱:EXAR 功能描述:SINGLE T1/E1/J1 FRAMER/LIU COMBO |
| XRT86L30_08 | 制造商:EXAR 制造商全稱:EXAR 功能描述:SINGLE T1/E1/J1 FRAMER/LIU COMBO |
| XRT86L30ES | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC pin LQFP pkg 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 |
| XRT86L30IB | 制造商:EXAR 制造商全稱:EXAR 功能描述:SINGLE T1/E1/J1 FRAMER/LIU COMBO |
| 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 |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。