- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄383876 > T7633 (Lineage Power) Dual T1/E1 3.3 V Short-Haul Terminator(雙T1/E1 3.3V短通信距離終端器) PDF資料下載
參數(shù)資料
| 型號： | T7633 |
| 廠商： | Lineage Power |
| 英文描述： | Dual T1/E1 3.3 V Short-Haul Terminator(雙T1/E1 3.3V短通信距離終端器) |
| 中文描述： | 雙T1/E1的3.3伏短途終結(jié)者（雙T1/E1的3.3短通信距離終端器） |
| 文件頁數(shù)： | 45/248頁 |
| 文件大?。?/td> | 1459K |
| 代理商： | T7633 |
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頁當(dāng)前第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
Advance Data Sheet
May 1998
T7633 Dual T1/E1 3.3 V Short-Haul Terminator
35
Lucent Technologies Inc.
Line Interface Unit: Transmit
(continued)
LIU Transmitter Configuration Modes
LIU Transmitter Zero Substitution Encoding (CODE)
LIU transmitter zero substitution (B8ZS/HDB3) encoding can be activated only in the single-rail (DUAL = 0) system/
framer interface mode. It is activated by setting CODE = 1 (register LIU_REG3, bit 2). Data transmitted from the
framer interface on TPD-LIU will be B8ZS/HDB3 encoded before appearing on TTIP and TRING at the line inter-
face.
LIU Transmitter Alarm Indication Signal Generator (XLAIS)
When the transmit alarm indication signal control is set (XLAIS = 1) for a given channel (see register LIU_REG5,
bit 1), a continuous stream of bipolar 1s is transmitted to the line interface. The internal LIU to framer TPD interface
(TPD) and internal LIU to framer TND interface (TND) signals are ignored during this mode. The XLAIS control is
ignored when a remote loopback (RLOOP) is selected using loopback control bits LOOPA and LOOPB (register
LIU_REG5, bits 2 to 3). The clock source used for the alarm indication signal is TLCK if present or INTSYSCK if
TLCK is not present. The clock tolerance must meet the nominal transmission specifications of 1.544 MHz
±
32 ppm for DS1 (T1), or 2.048 MHz
±
50 ppm CEPT (E1).
The XLAIS bit is defaulted to 1 on hardware reset allowing the transmitter to send AIS as soon as clocks are avail-
able, without needing to write the LIU registers
1
. Because the transmit equalization bits are needed to determine
the correct system rate (DS1/E1), the reset default state of the equalization bits EQ2, EQ1, EQ0 (register
LIU_REG6, bits 0—2) can be predetermined by setting the DS1_CEPT pin (see Table 6 on page 34). The default
transmit equalization is EQ2, EQ1, and EQ0 = 000 (0 dB T1/DS1) when DS1_CEPT = 1, and EQ2, EQ1, and EQ0
= 110 (CEPT 120
/75
) when DS1_CEPT = 0. The transmit equalization bits can be subsequently programmed
to any state by writing the LIU register regardless of the state of the DS1_CEPT pin. The DS1_CEPT pin is only
used to determine the reset default state of the equalization bits.
1. If TLCK from the framer is present, automatic transmission of AIS upon reset will occur only if the CHI common control register FRM_PR45
bit 0 = 0, the default, or low-frequency PLLCK mode. In this case, PLLCK will be equal to the line transmit rate, either 1.544 MHz for DS1 or
2.048 MHz for CEPT.
LIU Transmitter Alarms
Loss of LIU Transmit Clock (LOTC) Alarm
A loss of LIU transmit clock alarm (LOTC = 1, see register LIU_REG0, bit 3) is indicated if any of the clocks used in
the LIU transmitter pathes are absent. This includes loss of TLCK-LIU input, loss of RLCK-LIU during remote loop-
back, loss of jitter attenuator output clock (when enabled in transmit path), or the internal loss of clock from the
pulse-width controller. For all of these conditions, the LIU transmitter timing clock is lost and no data can be driven
onto the line. Output drivers TTIP and TRING are placed in a high-impedance state when this alarm is active. The
LOTC alarm asserts between 3
μ
s and 16
μ
s after the clock is lost, and deasserts immediately after detecting the
first clock edge. The LOTC alarm status bit will latch the alarm and remain set until being cleared by a read (clear
on read). Upon the transition from LOTC = 0 to LOTC = 1, an interrupt will be generated if the LOTC interrupt
enable bit LOTCIE (register LIU_REG1, bit 3) is set. The reset default is LOTCIE = 0.
An LOTC alarm may occur when RLOOP is activated and deactivated due to the phase transient that occurs as
TLCK-LIU switches its source to and from RLCK-LIU. Setting the RLOOP alarm prevention PRLALM = 1 (register
LIU_REG4, bit 3) prevents the LOTC alarm from occurring at the activation and deactivation of RLOOP but allows
the alarm to operate normally during the RLOOP active period. The reset default is PRLALM = 0.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| T7688 | 5.0 V E1/CEPT Quad Line Interface(5.0 V E1/CEPT四線接口) |
| T7689 | 5.0 V T1 Quad Line Interface(5.0 V T1四線接口) |
| T7690 | 5.0 V T1/E1 Quad Line Interface(5.0 V T1/E1 四線接口) |
| T7693 | 3.3 V T1/E1 Quad Line Interface( 3.3 V T1/E四線接口) |
| T7698 | Quad T1/E1 Line Interface and Octal T1/E1 Monitor(四T1/E1線接口和八T1/E1監(jiān)控器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| T7645036 | 功能描述:手工工具 Campbell Snap Link #2450, 7/16", Steel RoHS:否 制造商:Molex 產(chǎn)品:Extraction Tools 類型: 描述/功能:Extraction tool |
| T7645106 | 制造商:COOPER INDUSTRIES 功能描述:CC ACCESYS / #7350 1/8 Quick Link Steel Zinc Plated UPC Tagged |
| T7645126 | 制造商:COOPER INDUSTRIES 功能描述:CC ACCESYS / #7350 1/4 Quick Link Steel Zinc Plated UPC Tagged |
| T7645136V | 制造商:COOPER INDUSTRIES 功能描述:CC ACCESYS / #7350 5/16 Quick Link Steel Zinc Plated UPC Tagged |
| T7645146 | 制造商:COOPER INDUSTRIES 功能描述:CC ACCESYS / #7350 3/8 Quick Link Steel Zinc Plated UPC Tagged |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。