IDT82P2284 Просмотр технического описания (PDF) - Integrated Device Technology
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IDT82P2284 Datasheet PDF : 384 Pages
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Table of Contents
FEATURES ........................................................................................................................................................................ 1
APPLICATIONS ................................................................................................................................................................ 1
BLOCK DIAGRAM ............................................................................................................................................................ 2
1 PIN ASSIGNMENT ............................................................................................................................................................ 3
2 PIN DESCRIPTION ........................................................................................................................................................... 4
3 FUNCTIONAL DESCRIPTION ........................................................................................................................................ 12
3.1 T1 / E1 / J1 MODE SELECTION .................................................................................................................................................................. 14
3.2 RECEIVER IMPEDANCE MATCHING ......................................................................................................................................................... 15
3.3 ADAPTIVE EQUALIZER .............................................................................................................................................................................. 17
3.4 DATA SLICER .............................................................................................................................................................................................. 17
3.5 CLOCK AND DATA RECOVERY ................................................................................................................................................................ 17
3.6 RECEIVE JITTER ATTENUATOR ............................................................................................................................................................... 18
3.7 DECODER .................................................................................................................................................................................................... 19
3.7.1 Line Code Rule ............................................................................................................................................................................... 19
3.7.1.1 T1 / J1 Mode .................................................................................................................................................................... 19
3.7.1.2 E1 Mode ........................................................................................................................................................................... 19
3.7.2 Decode Error Detection ................................................................................................................................................................. 19
3.7.2.1 T1 / J1 Mode .................................................................................................................................................................... 19
3.7.2.2 E1 Mode ........................................................................................................................................................................... 19
3.7.3 LOS Detection ................................................................................................................................................................................ 20
3.8 FRAME PROCESSOR ................................................................................................................................................................................. 23
3.8.1 T1/J1 Mode ...................................................................................................................................................................................... 23
3.8.1.1 Synchronization Searching ............................................................................................................................................... 23
3.8.1.1.1 Super Frame (SF) Format ............................................................................................................................. 23
3.8.1.1.2 Extended Super Frame (ESF) Format ........................................................................................................... 24
3.8.1.1.3 T1 Digital Multiplexer (DM) Format (T1 only) ................................................................................................ 25
3.8.1.1.4 Switch Line Carrier - 96 (SLC-96) Format (T1 only) ...................................................................................... 26
3.8.1.2 Error Event And Out Of Synchronization Detection .......................................................................................................... 27
3.8.1.2.1 Super Frame (SF) Format ............................................................................................................................. 27
3.8.1.2.2 Extended Super Frame (ESF) Format ........................................................................................................... 27
3.8.1.2.3 T1 Digital Multiplexer (DM) Format (T1 only) ................................................................................................ 27
3.8.1.2.4 Switch Line Carrier - 96 (SLC-96) Format (T1 only) ...................................................................................... 27
3.8.1.3 Overhead Extraction (T1 Mode SLC-96 Format Only) ..................................................................................................... 28
3.8.1.4 Interrupt Summary ............................................................................................................................................................ 28
3.8.2 E1 Mode .......................................................................................................................................................................................... 30
3.8.2.1 Synchronization Searching ............................................................................................................................................... 32
3.8.2.1.1 Basic Frame .................................................................................................................................................. 32
3.8.2.1.2 CRC Multi-Frame ........................................................................................................................................... 33
3.8.2.1.3 CAS Signaling Multi-Frame ........................................................................................................................... 34
3.8.2.2 Error Event And Out Of Synchronization Detection .......................................................................................................... 34
3.8.2.2.1 Out Of Basic Frame Synchronization ............................................................................................................ 35
3.8.2.2.2 Out Of CRC Multi-Frame Synchronization .................................................................................................... 35
3.8.2.2.3 Out Of CAS Signaling Multi-Frame Synchronization ..................................................................................... 35
3.8.2.3 Overhead Extraction ......................................................................................................................................................... 35
3.8.2.3.1 International Bit Extraction ............................................................................................................................. 35
3.8.2.3.2 Remote Alarm Indication Bit Extraction ......................................................................................................... 35
Table of Contents
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March 22, 2004
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