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參數(shù)資料
| 型號(hào)： | T7234 |
| 英文描述： | Compliance with the New ETSI PSD Requirement |
| 中文描述： | 符合新的ETSI PSD的要求 |
| 文件頁(yè)數(shù)： | 5/116頁(yè) |
| 文件大?。?/td> | 1056K |
| 代理商： | T7234 |
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Data Sheet
January 1998
T7256 Single-Chip NT1
(SCNT1) Transceiver
Features
I
U- to S/T-interface conversion for ISDN basic rate
(2B+D) systems
— Integrated U- and S/T-interfaces
— Operates in stand-alone mode to provide U- and
S/T-interface activation, control, and mainte-
nance functions
— Serial microprocessor and time-division multi-
plexed (TDM) bus interfaces for enhanced NT1
operation and voice/data ports
— Automatic embedded operations channel (eoc)
processing for ANSI T1.601 systems
— Low power consumption supporting line-pow-
ered NT1 (See table 45 on page 102, Question
and Answers section, #53 for detailed power
consumption information.)
— Idle-mode support (35 mW typical)
— Board-level testability support
I
U-interface
— Conforms to ANSI T1.601 standard and ETSI
ETR 080 technical report
— 2B1Q four-level line code
— Automatic ANSI maintenance functions (quiet
mode and insertion loss mode)
I
S/T-interface
— Conforms to ANSI T1.605 standard, ITU-T I.430
recommendation, and ETSI ETS 300 012 for NT
operation
— Supports point-to-point and point-to-multipoint
(passive bus) arrangements
— Supports S- and Q-channel multiframing opera-
tions (an external microprocessor is required for
S- and Q-channel multiframing support)
I
Serial microprocessor and TDM bus interfaces
— Supports inexpensive serial microprocessor
— Supports direct codec connection and voice/
data ports
— Allows access to 2B+D data on TDM bus
I
Other
— Single +5 V (
— –40
°
— 44-pin PLCC
±
5%) supply
°
C
C to +85
Description
The Lucent Technologies Microelectronics Group
T7256 Single-Chip NT1 (SCNT1) Transceiver inte-
grated circuit provides data (2B+D) and control infor-
mation conversion between 2-wire (U-interface) and
4-wire (S/T-interface) digital subscriber loops on the
integrated services digital network (ISDN). The
T7256 conforms to the ANSI T1.601 standard and
ETSI ETR 080 technical report for the U-interface
and the ITU-T I.430 recommendation, ANSI T1.605
standard, and ETSI ETS 300 012 for the S/T-inter-
face. The T7256 also supports digital pair gain and
terminal adapter applications. The single +5 V CMOS
device is packaged in a 44-pin plastic leaded chip
carrier (PLCC).
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| T7234A | 制造商:AGERE 制造商全稱:AGERE 功能描述:Compliance with the New ETSI PSD Requirement |
| T7237 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Compliance with the New ETSI PSD Requirement |
| T7237A | 制造商:AGERE 制造商全稱:AGERE 功能描述:Compliance with the New ETSI PSD Requirement |
| T7240 | 制造商:TE Connectivity 功能描述: |
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