參數(shù)資料
型號(hào)： T7290A
廠商： Lineage Power
英文描述： DS1/T1/CEPT/E1 Line Interface(DS1/T1/CEPT/E1 線接口)
中文描述： DS1/T1/CEPT/E1線路接口（DS1/T1/CEPT/E1線接口）
文件頁(yè)數(shù)： 1/24頁(yè)
文件大?。?/td> 420K
代理商： T7290A
Data Sheet
April 1998
T7290A DS1/T1/CEPT/E1 Line Interface
Features
I
Fully integrated DS1/T1/CEPT/E1 line interface
I
For use in systems that are compliant with CB119,
AT&T PUB 43801, AT&T PUB 43802, AT&T PUB
62411, TR-TSY-000170, TR-TSY-000009, ITU-T
G.703, G.735, G.823, and I.431 specifications
I
Dual-rail system interface
I
On-chip transmit equalization
I
On-chip jitter attenuator
I
Monolithic clock recovery with frequency-
acquisition aide
I
High jitter accommodation (>0.4 U.I.)
I
No external crystal required
I
Three clocking modes to accommodate multiple
system clocking requirements
I
Multiple link-status and alarm features
I
Microprocessor interface option
I
AIS (blue alarm) transmission
I
Loopback modes for fault isolation
I
Minimal external circuitry required
Description
The Lucent Technologies Microelectronics Group
T7290A DS1/T1/CEPT/E1 Line Interface is a fully
integrated line transceiver capable of operation at the
domestic DS1/T1 carrier rate (1.544 Mbits/s) or the
international CEPT/E1 rate (2.048 Mbits/s). The
T7290A device combines features found in existing
line-interface devices with additional desirable fea-
tures.
The on-chip, low-impedance output drivers provide
shaped waveforms to the transformer, guaranteeing
template conformance. The T7290A device inter-
faces to the digital cross connect (DSX) at lengths up
to 655 feet during DS1 operation and interfaces to
line impedances of 75
or 120
during CEPT oper-
ation. The device line interface also can transmit
waveforms compatible with T1 lines.
The T7290A line interface provides phase-locked
loop clock recovery and data retiming on received
data. Also, on-chip, selectable jitter attenuation is
available. The jitter attenuator can be placed in the
receive or transmit data path. No external crystals
are required with the T7290A device.
Digital control circuitry allows for multiple loopbacks,
testing, and alarm status monitoring. A microproces-
sor interface option allows for either control via a
microprocessor or direct pin-selectable control
(hardware mode).
The T7290A device is manufactured by using a low-
power CMOS technology and is available in a 28-pin,
plastic SOJ package or a 28-pin, plastic DIP pack-
age.
Note
: Modification of an existing T7290 application
may be required when migrating to a T7290A-
based architecture. The functions of the TBS,
TSC, LP1, DLOS, and LOS pins have been
changed or modified. Please refer to the
T7290A Migration from T7290 section of this
data sheet.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
T-7290A 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:T7290A DS1/T1/CEPT Line Interface
T-7290A-EL 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:T7290A DS1/T1/CEPT Line Interface
T-7290A--EL 制造商:Alcatel-Lucent 功能描述:DATACOM, PCM TRANSCEIVER, PDSO28
T7290A-EL 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:T7290A DS1/T1/CEPT Line Interface
T-7290A--EL-DT 制造商:Rochester Electronics LLC 功能描述:- Tape and Reel
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