IDT82P2284 Integrated Device Technology, Inc., IDT82P2284 Datasheet - Page 3

• Manufacturer Part Number: IDT82P2284
• Description: 4 Channel T1/J1/E1 Transceiver
• Manufacturer: Integrated Device Technology, Inc.

1 PIN ASSIGNMENT ............................................................................................................................................................ 3
2 PIN DESCRIPTION ........................................................................................................................................................... 4
3 FUNCTIONAL DESCRIPTION ........................................................................................................................................ 12
Table of Contents
FEATURES ........................................................................................................................................................................ 1
APPLICATIONS ................................................................................................................................................................ 1
BLOCK DIAGRAM ............................................................................................................................................................ 2
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
3.8 FRAME PROCESSOR ................................................................................................................................................................................. 23
3.7.1
3.7.2
3.7.3
3.8.1
3.8.2
Line Code Rule ............................................................................................................................................................................... 19
3.7.1.1
3.7.1.2
Decode Error Detection ................................................................................................................................................................. 19
3.7.2.1
3.7.2.2
LOS Detection ................................................................................................................................................................................ 20
T1/J1 Mode ...................................................................................................................................................................................... 23
3.8.1.1
3.8.1.2
3.8.1.3
3.8.1.4
E1 Mode .......................................................................................................................................................................................... 30
3.8.2.1
3.8.2.2
3.8.2.3
T1 / J1 Mode .................................................................................................................................................................... 19
E1 Mode ........................................................................................................................................................................... 19
T1 / J1 Mode .................................................................................................................................................................... 19
E1 Mode ........................................................................................................................................................................... 19
Synchronization Searching ............................................................................................................................................... 23
3.8.1.1.1
3.8.1.1.2
3.8.1.1.3
3.8.1.1.4
Error Event And Out Of Synchronization Detection .......................................................................................................... 27
3.8.1.2.1
3.8.1.2.2
3.8.1.2.3
3.8.1.2.4
Overhead Extraction (T1 Mode SLC-96 Format Only) ..................................................................................................... 28
Interrupt Summary ............................................................................................................................................................ 28
Synchronization Searching ............................................................................................................................................... 32
3.8.2.1.1
3.8.2.1.2
3.8.2.1.3
Error Event And Out Of Synchronization Detection .......................................................................................................... 34
3.8.2.2.1
3.8.2.2.2
3.8.2.2.3
Overhead Extraction ......................................................................................................................................................... 35
3.8.2.3.1
3.8.2.3.2
Super Frame (SF) Format ............................................................................................................................. 23
Extended Super Frame (ESF) Format ........................................................................................................... 24
T1 Digital Multiplexer (DM) Format (T1 only) ................................................................................................ 25
Switch Line Carrier - 96 (SLC-96) Format (T1 only) ...................................................................................... 26
Super Frame (SF) Format ............................................................................................................................. 27
Extended Super Frame (ESF) Format ........................................................................................................... 27
T1 Digital Multiplexer (DM) Format (T1 only) ................................................................................................ 27
Switch Line Carrier - 96 (SLC-96) Format (T1 only) ...................................................................................... 27
Basic Frame .................................................................................................................................................. 32
CRC Multi-Frame ........................................................................................................................................... 33
CAS Signaling Multi-Frame ........................................................................................................................... 34
Out Of Basic Frame Synchronization ............................................................................................................ 35
Out Of CRC Multi-Frame Synchronization .................................................................................................... 35
Out Of CAS Signaling Multi-Frame Synchronization ..................................................................................... 35
International Bit Extraction ............................................................................................................................. 35
Remote Alarm Indication Bit Extraction ......................................................................................................... 35
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Table of Contents
March 22, 2004