T7234 데이터 시트보기 (PDF) - Agere -> LSI Corporation
부품명
상세내역
일치하는 목록
T7234 Datasheet PDF : 116 Pages
| |||
T7256 Single-Chip NT1 (SCNT1) Transceiver
Data Sheet
January 1998
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
2
Lucent Technologies Inc.
Share Link: 