- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄1977 > XRT86L30IV-F (Exar Corporation)IC LIU/FRAMER TI/E1/J1 SGL 128LQ PDF資料下載
參數(shù)資料
| 型號： | XRT86L30IV-F |
| 廠商： | Exar Corporation |
| 文件頁數(shù)： | 86/284頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC LIU/FRAMER TI/E1/J1 SGL 128LQ |
| 標(biāo)準(zhǔn)包裝： | 72 |
| 控制器類型： | T1/E1/J1 調(diào)幀器，LIU |
| 電源電壓： | 3.3V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 128-LQFP |
| 供應(yīng)商設(shè)備封裝： | 128-LQFP（14x20） |
| 包裝： | 托盤 |
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頁當(dāng)前第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頁第113頁第114頁第115頁第116頁第117頁第118頁第119頁第120頁第121頁第122頁第123頁第124頁第125頁第126頁第127頁第128頁第129頁第130頁第131頁第132頁第133頁第134頁第135頁第136頁第137頁第138頁第139頁第140頁第141頁第142頁第143頁第144頁第145頁第146頁第147頁第148頁第149頁第150頁第151頁第152頁第153頁第154頁第155頁第156頁第157頁第158頁第159頁第160頁第161頁第162頁第163頁第164頁第165頁第166頁第167頁第168頁第169頁第170頁第171頁第172頁第173頁第174頁第175頁第176頁第177頁第178頁第179頁第180頁第181頁第182頁第183頁第184頁第185頁第186頁第187頁第188頁第189頁第190頁第191頁第192頁第193頁第194頁第195頁第196頁第197頁第198頁第199頁第200頁第201頁第202頁第203頁第204頁第205頁第206頁第207頁第208頁第209頁第210頁第211頁第212頁第213頁第214頁第215頁第216頁第217頁第218頁第219頁第220頁第221頁第222頁第223頁第224頁第225頁第226頁第227頁第228頁第229頁第230頁第231頁第232頁第233頁第234頁第235頁第236頁第237頁第238頁第239頁第240頁第241頁第242頁第243頁第244頁第245頁第246頁第247頁第248頁第249頁第250頁第251頁第252頁第253頁第254頁第255頁第256頁第257頁第258頁第259頁第260頁第261頁第262頁第263頁第264頁第265頁第266頁第267頁第268頁第269頁第270頁第271頁第272頁第273頁第274頁第275頁第276頁第277頁第278頁第279頁第280頁第281頁第282頁第283頁第284頁
XRT86L30
165
SINGLE T1/E1/J1 FRAMER/LIU COMBO
REV. 1.0.1
of the next frame, in some applications. However, all receivers must be able to accommodate receipt of one or
more consecutive flags.
6.7.7
Address Field
The address field consists of two octets. A single octet address field is reserved for LAPB operation in order to
allow a single LAPB data link connection to be multiplexed along with LAPD data link connections.
6.7.8
Address Field Extension bit (EA)
The address field range is extended by reserving bit 1 of the address field octets to indicate the final octet of
the address field. The presence of a 1 in bit 1 of an address field octet signals that it is the final octet of the
address field. The double octet address field for LAPD operation shall have bit 1 of the first octet set to a 0 and
bit 1 of the second octet set to 1.
6.7.9
Command or Response bit (C/R)
The Command or Response bit identifies a frame as either a command or a response. The user side shall
send commands with the C/R bit set to 0, and responses with the C/R bit set to 1. The network side shall do the
opposite; That is, commands are sent with C/R bit set to 1, and responses are sent with C/R bit set to 0.
6.7.10
Service Access Point Identifier (SAPI)
The Service Access Point Identifier identifies a point at which data link layer services are preceded by a data
link layer entity type to a layer 3 or management entity. Consequently, the SAPI specifies a data link layer entity
type that should process a data link layer frame and also a layer 3 or management entity, which is to receive
information carried by the data link layer frame. The SAPI allows 64 service access points to be specified,
where bit 3 of the address field octet containing the SAPI is the least significant binary digit and bit 8 is the most
significant. SAPI values are 0x14 and 0x15 for performance report message and path or test signal
identification message respectively.
6.7.11
Terminal Endpoint Identifier (TEI)
The TEI sub-field allows 128 values where bit 2 of the address field octet containing the TEI is the least
significant binary digit and bit 8 is the most significant binary digit. The TEI sub-field bit pattern 111 1111 (=127)
is defined as the group TEI. The group TEI is assigned permanently to the broadcast data link connection
associated with the addressed Service Access Point (SAP). TEI values other than 127 are used for the point-
to-point data link connections associated with the addressed SAP.
Non-automatic TEI values (0-63) are
selected by the user, and their allocation is the responsibility of the user. The network automatically selects
and allocates TEI values (64-126).
6.7.12
Control Field
The control field identifies the type of frame which will be either a command or response. The control field shall
consist of one or two octets. Three types of control field formats are specified: 2-octet numbered information
transfer (I format), 2-octet supervisory functions (S format), and single-octet unnumbered information transfers
and control functions (U format).
The control field for T1/E1 message is categorized as a single-octet
unacknowledged information transfer having the value 0x03.
6.7.13
Frame Check Sequence (FCS) Field
The source of either the performance report or an identification message shall generate the frame check
sequence. The FCS field shall be a 16-bit sequence. It shall be the ones complement of the sum (modulo 2)
of:
The remainder of xk (x15 + x14 + x13 + x12 + x11 + x10 + x9 + x8 + x7 + x6 + x5 + x4 + x3 + x2 + x + 1)
divided (modulo 2) by the generator polynomial x16 + x12 + x5 + 1, where k is the number of bits in the frame
existing between, but not including, the final bit of the opening flag and the first bit of the FCS, excluding bits
inserted for transparency, and
The remainder of the division (modulo 2) by the generator polynomial x16 + x12 + x5 + 1, of the product of
x16 by the content of the frame existing between, but not including, the final bit of the opening flag and the
first bit of the FCS, excluding bits inserted for transparency.
As a typical implementation at the transmitter, the initial content of the register of the device computing the
remainder of the division is preset to all 1s and is then modified by division by the generator polynomial on the
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| XRT86VL30IV-F | IC FRAMR/LIU T1/E1/J1 QD 128LQFP |
| XRT86VL32IB-F | IC LIU/FRAMER T1/E1/J1 2CH 225BG |
| XRT86VL34IB-F | IC LIU/FRAMER T1/E1/J1 4CH 225BG |
| XRT86VL38IB484-F | IC LIU/FRAMER T1/E1/J1 8CH 484BG |
| XRT86VX38IB329-F | IC TI/E1/J1 FRAMER/LIU 329FPBGA |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XRT86L32IB | 制造商:Exar Corporation 功能描述: |
| XRT86SH221 | 制造商:EXAR 制造商全稱: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:EXAR 功能描述:SDH-TO-PDH FRAMER/MAPPER WITH INTEGRATED 21-CHANNEL E1 SH LIU |
| XRT86SH221ES | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC VOYAGER LITE 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 |
| XRT86SH221IB | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC SDH-TO-PDH, VT/TU INTGR 21 CHNL 2FRAME 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，3分鐘左右您將得到回復(fù)。