參數(shù)資料
型號： T7237A
英文描述： Compliance with the New ETSI PSD Requirement
中文描述： 符合新的ETSI PSD的要求
文件頁數(shù)： 6/116頁
文件大?。?/td> 1056K
代理商： T7237A
Data Sheet
January 1998
T7256 Single-Chip NT1 (SCNT1) Transceiver
2
Lucent Technologies Inc.
Table of Contents
Contents
Page
Features ....................................................................................................................................................................1
Description ................................................................................................................................................................1
Pin Information ..........................................................................................................................................................5
Application Overview...............................................................................................................................................10
Functional Overview................................................................................................................................................11
U-Interface Frame Structure....................................................................................................................................12
Bit Assignments.......................................................................................................................................................13
S/T-Interface Frame Structure..................................................................................................................................14
U-Interface Description............................................................................................................................................17
S/T-Interface Description .........................................................................................................................................18
Microprocessor Interface Description......................................................................................................................18
Registers..........................................................................................................................................................18
Timing..............................................................................................................................................................39
Time-Division Multiplexed (TDM) Bus Description ..................................................................................................41
Clock and Data Format....................................................................................................................................41
Frame Strobe...................................................................................................................................................41
Data Flow Matrix Description...................................................................................................................................43
B1-, B2-, D-Channel Routing...........................................................................................................................43
Loopbacks...............................................................................................................................................................44
Modes of Operation.................................................................................................................................................45
STLED Description..................................................................................................................................................46
eoc State Machine Description................................................................................................................................48
ANSI Maintenance Control Description...................................................................................................................48
S/T-Interface Multiframing Controller Description....................................................................................................49
Board-Level Testing .........................................................................................................................................50
Stimulus/Response Testing..............................................................................................................................50
Application Briefs.....................................................................................................................................................52
T7256 Reference Circuit..................................................................................................................................52
Using the T7256 in a Combination TE/TA Environment (NT1/TA) ...................................................................59
T7256 Configuration........................................................................................................................................59
D-Channel Priority ...........................................................................................................................................60
Interfacing the T7256 to the
Motorola
68302...................................................................................................62
Available Tools for Evaluation of the T7256 .....................................................................................................69
Absolute Maximum Ratings.....................................................................................................................................73
Handling Precautions ..............................................................................................................................................73
Recommended Operating Conditions .....................................................................................................................73
Electrical Characteristics.........................................................................................................................................74
Power Consumption.........................................................................................................................................74
Pin Electrical Characteristics...........................................................................................................................74
S/T-Interface Receiver Common-Mode Rejection............................................................................................75
Crystal Characteristics.....................................................................................................................................75
Timing Characteristics.............................................................................................................................................76
Switching Test Input/Output Waveform ............................................................................................................78
Propagation Delay ...........................................................................................................................................78
Outline Diagram.......................................................................................................................................................79
44-Pin PLCC....................................................................................................................................................79
Ordering Information................................................................................................................................................79
Questions and Answers...........................................................................................................................................80
Introduction......................................................................................................................................................80
U-Interface.......................................................................................................................................................80
S/T-Interface.....................................................................................................................................................88
Miscellaneous..................................................................................................................................................99
Glossary ................................................................................................................................................................105
Standards Documentation.....................................................................................................................................109
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
T7240 制造商:TE Connectivity 功能描述:
T7-241A5 功能描述:撥動開關(guān) ON NONE OFF 2 Pole Standard Bat Handle RoHS:否 制造商:OTTO 觸點形式: 開關(guān)功能: 電流額定值: 電壓額定值 AC: 電壓額定值 DC: 功率額定值: 端接類型: 安裝風(fēng)格: 端子密封: 觸點電鍍: 照明:
T7-241B1 制造商:OTTO 功能描述:Toggle Switches ON NONE ON 2 Pole Standard Bat Handle 制造商:OTTO Engineering Inc 功能描述:Switch Toggle ON None ON DPDT Bat Toggle PC Pins 16A 115VAC 28VDC PC Mount with Threads
T7-241B5 功能描述:撥動開關(guān) ON NONE ON 2 Pole Standard Bat Handle RoHS:否 制造商:OTTO 觸點形式: 開關(guān)功能: 電流額定值: 電壓額定值 AC: 電壓額定值 DC: 功率額定值: 端接類型: 安裝風(fēng)格: 端子密封: 觸點電鍍: 照明:
T7-241C5 制造商:OTTO 功能描述:Toggle Switches (ON) NONE OFF 2 Pole Standard Bat Handle 制造商:OTTO Engineering Inc 功能描述:Switch Toggle (ON) None OFF DPST Bat Toggle PC Pins 16A 115VAC 28VDC PC Mount with Threads
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