- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄371179 > T7630 T7630 Dual T1/E1 5.0 V Short-Haul Terminator (Terminator-II) PDF資料下載
參數(shù)資料
| 型號： | T7630 |
| 英文描述： | T7630 Dual T1/E1 5.0 V Short-Haul Terminator (Terminator-II) |
| 中文描述： | T7630雙T1/E1的5.0V的短途終結(jié)者（終結(jié)者-Ⅱ） |
| 文件頁數(shù)： | 33/210頁 |
| 文件大小： | 3075K |
| 代理商： | T7630 |
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頁當前第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
Lucent Technologies Inc.
Lucent Technologies Inc.
33
Preliminary Data Sheet
October 2000
T7630 Dual T1/E1 5.0 V Short-Haul Terminator (Terminator-II)
Line Interface Unit: Transmit
(continued)
LIU Transmitter Configuration Modes
LIU Transmitter Zero Substitution Encoding
(CODE)
LIU transmitter zero substitution (B8ZS/HDB3) encod-
ing 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 interface.
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 ones
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 sig-
nal 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 available, without needing to write the LIU regis-
ters
*
. 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 pre-
determined by setting the DS1_CEPT pin (see
Table 7). 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 writ-
ing 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.
LIU Transmitter Alarms
Loss of LIU Transmit Clock (LOTC) Alarm
A loss of LIU transmit clock alarm (LOTC = 1, see reg-
ister LIU_REG0, bit 3) is indicated if any of the clocks
used in the LIU transmitter paths are absent. This
includes loss of TLCK-LIU input, loss of RLCK-LIU dur-
ing remote loopback, 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 dur-
ing the RLOOP active period. The reset default is
PRLALM = 0.
LIU Transmitter Driver Monitor (TDM) Alarm
The transmit driver monitor detects two conditions: a
nonfunctional link due to faults on the primary of the
transmit line transformer and periods of no data trans-
mission. The TDM alarm (register LIU_REG0, bit 2) is
the OR’d function of both faults and provides informa-
tion about the integrity of the LIU transmitter signal
path.
* 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.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| T7630 | Dual T1/E1 5.0 V Short-Haul Terminator (Terminator-II)(雙 T1/E1 5.0V短距離通信終端器) |
| T8100A | H.100/H.110 Interface and Time-Slot Interchangers |
| T8102A | H.100/H.110 Interface and Time-Slot Interchangers |
| T8105A | H.100/H.110 Interface and Time-Slot Interchangers |
| T8100 | H.100/H.110 Interface and Time-Slot Interchanger |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| T7630426 | 制造商:COOPER INDUSTRIES 功能描述:CC ACCESYS / #2450 3/8 Spring Snap Link Stainless Steel UPC Tagged |
| T-7630-TL2-DB | 制造商:Legerity 功能描述:5V DUAL T1/E1 SHORT-HAUL TERMINATOR |
| T7633 | 制造商:AGERE 制造商全稱:AGERE 功能描述:Dual T1/E1 3.3 V Short-Haul Terminator |
| 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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。