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XRT86L30 Datasheet(PDF) 4 Page - Exar Corporation

Part # XRT86L30
Description  SINGLE T1/E1/J1 FRAMER/LIU COMBO
Download  284 Pages
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Manufacturer  EXAR [Exar Corporation]
Direct Link  http://www.exar.com
Logo EXAR - Exar Corporation

XRT86L30 Datasheet(HTML) 4 Page - Exar Corporation

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XRT86L30
I
SINGLE T1/E1/J1 FRAMER/LIU COMBO
REV. 1.0.1
LIST OF PARAGRAPHS
1.0 PIN LIST ...................................................................................................................................................4
2.0 PIN DESCRIPTIONS ................................................................................................................................8
3.0 MICROPROCESSOR INTERFACE BLOCK ..........................................................................................21
3.0.1 THE MICROPROCESSOR INTERFACE BLOCK SIGNALS ....................................................................................... 21
3.1 INTEL MODE PROGRAMMED I/O ACCESS (ASYNCHRONOUS) .................................................................. 24
3.2 MOTOROLA MODE PROGRAMMED I/O ACCESS (SYNCHRONOUS) .......................................................... 26
3.2.1 DMA READ/WRITE OPERATIONS .............................................................................................................................. 28
3.3 MEMORY MAPPED I/O ADDRESSING ............................................................................................................ 30
3.4 DESCRIPTION OF THE CONTROL REGISTERS ............................................................................................ 31
3.4.1 REGISTER DESCRIPTIONS ......................................................................................................................................... 37
3.5 PROGRAMMING THE LINE INTERFACE UNIT (LIU SECTION) ................................................................... 118
3.6 THE INTERRUPT STRUCTURE WITHIN THE FRAMER ............................................................................... 138
3.6.1 CONFIGURING THE INTERRUPT SYSTEM, AT THE FRAMER LEVEL .................................................................. 141
4.0 GENERAL DESCRIPTION AND INTERFACE .....................................................................................144
4.1 PHYSICAL INTERFACE .................................................................................................................................. 144
4.2 R3 TECHNOLOGY (RELAYLESS / RECONFIGURABLE / REDUNDANCY) ................................................ 145
4.2.1 LINE CARD REDUNDANCY ....................................................................................................................................... 145
4.2.2 TYPICAL REDUNDANCY SCHEMES ........................................................................................................................ 145
4.2.3 1:1 AND 1+1 REDUNDANCY WITHOUT RELAYS .................................................................................................... 145
4.2.4 TRANSMIT INTERFACE WITH 1:1 AND 1+1 REDUNDANCY .................................................................................. 145
4.2.5 RECEIVE INTERFACE WITH 1:1 AND 1+1 REDUNDANCY ..................................................................................... 146
4.3 POWER FAILURE PROTECTION ................................................................................................................... 147
4.4 OVERVOLTAGE AND OVERCURRENT PROTECTION ................................................................................ 147
4.5 NON-INTRUSIVE MONITORING ..................................................................................................................... 147
4.6 T1/E1 SERIAL PCM INTERFACE ................................................................................................................... 148
4.7 T1/E1 FRACTIONAL INTERFACE .................................................................................................................. 149
4.8 T1/E1 TIME SLOT SUBSTITUTION AND CONTROL ..................................................................................... 150
4.9 ROBBED BIT SIGNALING/CAS SIGNALING ................................................................................................. 151
4.10 OVERHEAD INTERFACE .............................................................................................................................. 153
4.11 FRAMER BYPASS MODE ............................................................................................................................. 154
4.12 HIGH-SPEED NON-MULTIPLEXED INTERFACE ........................................................................................ 155
4.13 HIGH-SPEED MULTIPLEXED INTERFACE ................................................................................................. 156
5.0 LOOPBACK MODES OF OPERATION ...............................................................................................157
5.1 LIU PHYSICAL INTERFACE LOOPBACK DIAGNOSTICS ............................................................................ 157
5.1.1 LOCAL ANALOG LOOPBACK .................................................................................................................................. 157
5.1.2 REMOTE LOOPBACK ................................................................................................................................................ 157
5.1.3 DIGITAL LOOPBACK ................................................................................................................................................. 158
5.1.4 DUAL LOOPBACK ..................................................................................................................................................... 158
5.1.5 FRAMER REMOTE LINE LOOPBACK ...................................................................................................................... 158
5.1.6 FRAMER PAYLOAD LOOPBACK ............................................................................................................................. 159
5.1.7 FRAMER LOCAL LOOPBACK ................................................................................................................................... 159
6.0 HDLC CONTROLLERS AND LAPD MESSAGES ...............................................................................160
6.1 PROGRAMMING SEQUENCE FOR SENDING LESS THAN 96-BYTE MESSAGES .................................... 160
6.2 PROGRAMMING SEQUENCE FOR SENDING LARGE MESSAGES ........................................................... 160
6.3 PROGRAMMING SEQUENCE FOR RECEIVING LAPD MESSAGES ........................................................... 161
6.4 SS7 (SIGNALING SYSTEM NUMBER 7) FOR ESF IN DS1 ONLY ................................................................ 161
6.5 DS1/E1 DATALINK TRANSMISSION USING THE HDLC CONTROLLERS ................................................. 162
6.6 TRANSMIT BOS (BIT ORIENTED SIGNALING) PROCESSOR ..................................................................... 162
6.6.1 DESCRIPTION OF BOS .............................................................................................................................................. 162
6.6.2 PRIORITY CODEWORD MESSAGE .......................................................................................................................... 162
6.6.3 COMMAND AND RESPONSE INFORMATION .......................................................................................................... 162
6.7 TRANSMIT MOS (MESSAGE ORIENTED SIGNALING) PROCESSOR ........................................................ 163
6.7.1 DISCUSSION OF MOS ............................................................................................................................................... 163
6.7.2 PERIODIC PERFORMANCE REPORT ...................................................................................................................... 163
6.7.3 TRANSMISSION-ERROR EVENT .............................................................................................................................. 164
6.7.4 PATH AND TEST SIGNAL IDENTIFICATION MESSAGE ......................................................................................... 164
6.7.5 FRAME STRUCTURE ................................................................................................................................................. 164
6.7.6 FLAG SEQUENCE ...................................................................................................................................................... 164
6.7.7 ADDRESS FIELD ........................................................................................................................................................ 165
6.7.8 ADDRESS FIELD EXTENSION BIT (EA) ................................................................................................................... 165


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