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IDT82P2282

Dual T1/E1/J1 Long Haul / Short Haul Transceiver

Integrated Device Technology 

Table of Contents

FEATURES ........................................................................................................................................................................ 1

APPLICATIONS ................................................................................................................................................................ 1

BLOCK DIAGRAM ............................................................................................................................................................ 2

1 PIN ASSIGNMENT ............................................................................................................................................................ 3

2 PIN DESCRIPTION ........................................................................................................................................................... 4

3 FUNCTIONAL DESCRIPTION ........................................................................................................................................ 11

3.1 T1 / E1 / J1 MODE SELECTION .................................................................................................................................................................. 13

3.2 RECEIVER IMPEDANCE MATCHING ......................................................................................................................................................... 14

3.3 ADAPTIVE EQUALIZER .............................................................................................................................................................................. 16

3.4 DATA SLICER .............................................................................................................................................................................................. 16

3.5 CLOCK AND DATA RECOVERY ................................................................................................................................................................ 16

3.6 RECEIVE JITTER ATTENUATOR ............................................................................................................................................................... 17

3.7 DECODER .................................................................................................................................................................................................... 18

3.7.1 Line Code Rule ............................................................................................................................................................................... 18

3.7.1.1 T1 / J1 Mode .................................................................................................................................................................... 18

3.7.1.2 E1 Mode ........................................................................................................................................................................... 18

3.7.2 Decode Error Detection ................................................................................................................................................................. 18

3.7.2.1 T1 / J1 Mode .................................................................................................................................................................... 18

3.7.2.2 E1 Mode ........................................................................................................................................................................... 18

3.7.3 LOS Detection ................................................................................................................................................................................ 19

3.8 FRAME PROCESSOR ................................................................................................................................................................................. 22

3.8.1 T1/J1 Mode ...................................................................................................................................................................................... 22

3.8.1.1 Synchronization Searching ............................................................................................................................................... 22

3.8.1.1.1 Super Frame (SF) Format ............................................................................................................................. 22

3.8.1.1.2 Extended Super Frame (ESF) Format ........................................................................................................... 23

3.8.1.1.3 T1 Digital Multiplexer (DM) Format (T1 only) ................................................................................................ 24

3.8.1.1.4 Switch Line Carrier - 96 (SLC-96) Format (T1 only) ...................................................................................... 25

3.8.1.2 Error Event And Out Of Synchronization Detection .......................................................................................................... 26

3.8.1.2.1 Super Frame (SF) Format ............................................................................................................................. 26

3.8.1.2.2 Extended Super Frame (ESF) Format ........................................................................................................... 26

3.8.1.2.3 T1 Digital Multiplexer (DM) Format (T1 only) ................................................................................................ 26

3.8.1.2.4 Switch Line Carrier - 96 (SLC-96) Format (T1 only) ...................................................................................... 26

3.8.1.3 Overhead Extraction (T1 Mode SLC-96 Format Only) ..................................................................................................... 27

3.8.1.4 Interrupt Summary ............................................................................................................................................................ 27

3.8.2 E1 Mode .......................................................................................................................................................................................... 29

3.8.2.1 Synchronization Searching ............................................................................................................................................... 31

3.8.2.1.1 Basic Frame .................................................................................................................................................. 31

3.8.2.1.2 CRC Multi-Frame ........................................................................................................................................... 32

3.8.2.1.3 CAS Signaling Multi-Frame ........................................................................................................................... 33

3.8.2.2 Error Event And Out Of Synchronization Detection .......................................................................................................... 33

3.8.2.2.1 Out Of Basic Frame Synchronization ............................................................................................................ 34

3.8.2.2.2 Out Of CRC Multi-Frame Synchronization .................................................................................................... 34

3.8.2.2.3 Out Of CAS Signaling Multi-Frame Synchronization ..................................................................................... 34

3.8.2.3 Overhead Extraction ......................................................................................................................................................... 34

3.8.2.3.1 International Bit Extraction ............................................................................................................................. 34

3.8.2.3.2 Remote Alarm Indication Bit Extraction ......................................................................................................... 34

Table of Contents

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October 7, 2003

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