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XRT86L30IB Datasheet(PDF) 4 Page - Exar Corporation

Part # XRT86L30IB
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

XRT86L30IB Datasheet(HTML) 4 Page - Exar Corporation

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XRT86L30
PRELIMINARY
REV. P1.0.1
SINGLE T1/E1/J1 FRAMER/LIU COMBO
I
LIST OF PARAGRAPHS
1.0 PIN LIST .................................................................................................................................................10
2.0 PIN DESCRIPTIONS ..............................................................................................................................11
3.0 MICROPROCESSOR INTERFACE BLOCK ..........................................................................................24
3.0.1 THE MICROPROCESSOR INTERFACE BLOCK SIGNALS ....................................................................................... 24
3.1 INTEL MODE PROGRAMMED I/O ACCESS (ASYNCHRONOUS) .................................................................. 27
3.2 MOTOROLA MODE PROGRAMMED I/O ACCESS (SYNCHRONOUS) .......................................................... 29
3.2.1 DMA READ/WRITE OPERATIONS .............................................................................................................................. 31
3.3 MEMORY MAPPED I/O ADDRESSING ............................................................................................................ 33
3.4 DESCRIPTION OF THE CONTROL REGISTERS ............................................................................................ 34
3.4.1 REGISTER DESCRIPTIONS ......................................................................................................................................... 40
3.5 PROGRAMMING THE LINE INTERFACE UNIT (LIU SECTION) ................................................................... 124
3.6 THE INTERRUPT STRUCTURE WITHIN THE FRAMER ............................................................................... 143
3.6.1 CONFIGURING THE INTERRUPT SYSTEM, AT THE FRAMER LEVEL .................................................................. 146
4.0 GENERAL DESCRIPTION AND INTERFACE .....................................................................................149
4.1 PHYSICAL INTERFACE .................................................................................................................................. 149
4.2 R3 TECHNOLOGY (RELAYLESS / RECONFIGURABLE / REDUNDANCY) ................................................ 150
4.2.1 LINE CARD REDUNDANCY ....................................................................................................................................... 150
4.2.2 TYPICAL REDUNDANCY SCHEMES ........................................................................................................................ 150
4.2.3 1:1 AND 1+1 REDUNDANCY WITHOUT RELAYS .................................................................................................... 150
4.2.4 TRANSMIT INTERFACE WITH 1:1 AND 1+1 REDUNDANCY .................................................................................. 150
4.2.5 RECEIVE INTERFACE WITH 1:1 AND 1+1 REDUNDANCY ..................................................................................... 151
4.3 POWER FAILURE PROTECTION ................................................................................................................... 152
4.4 OVERVOLTAGE AND OVERCURRENT PROTECTION ................................................................................ 152
4.5 NON-INTRUSIVE MONITORING ..................................................................................................................... 152
4.6 T1/E1 SERIAL PCM INTERFACE ................................................................................................................... 153
4.7 T1/E1 FRACTIONAL INTERFACE .................................................................................................................. 154
4.8 T1/E1 TIME SLOT SUBSTITUTION AND CONTROL ..................................................................................... 155
4.9 ROBBED BIT SIGNALING/CAS SIGNALING ................................................................................................. 156
4.10 OVERHEAD INTERFACE .............................................................................................................................. 158
4.11 FRAMER BYPASS MODE ............................................................................................................................. 159
4.12 HIGH-SPEED NON-MULTIPLEXED INTERFACE ........................................................................................ 160
4.13 HIGH-SPEED MULTIPLEXED INTERFACE ................................................................................................. 161
5.0 LOOPBACK MODES OF OPERATION ............................................................................................... 162
5.1 LIU PHYSICAL INTERFACE LOOPBACK DIAGNOSTICS ............................................................................ 162
5.1.1 LOCAL ANALOG LOOPBACK .................................................................................................................................. 162
5.1.2 REMOTE LOOPBACK ................................................................................................................................................ 162
5.1.3 DIGITAL LOOPBACK ................................................................................................................................................. 163
5.1.4 DUAL LOOPBACK ..................................................................................................................................................... 163
5.1.5 FRAMER REMOTE LINE LOOPBACK ...................................................................................................................... 163
5.1.6 FRAMER PAYLOAD LOOPBACK ............................................................................................................................. 164
5.1.7 FRAMER LOCAL LOOPBACK ................................................................................................................................... 164
6.0 HDLC CONTROLLERS AND LAPD MESSAGES ...............................................................................165
6.1 PROGRAMMING SEQUENCE FOR SENDING LESS THAN 96-BYTE MESSAGES .................................... 165
6.2 PROGRAMMING SEQUENCE FOR SENDING LARGE MESSAGES ........................................................... 165
6.3 PROGRAMMING SEQUENCE FOR RECEIVING LAPD MESSAGES ........................................................... 165
6.4 SS7 (SIGNALING SYSTEM NUMBER 7) FOR ESF IN DS1 ONLY ................................................................ 166
6.5 DS1/E1 DATALINK TRANSMISSION USING THE HDLC CONTROLLERS ................................................. 167
6.6 TRANSMIT BOS (BIT ORIENTED SIGNALING) PROCESSOR ..................................................................... 167
6.6.1 DESCRIPTION OF BOS .............................................................................................................................................. 167
6.6.2 PRIORITY CODEWORD MESSAGE .......................................................................................................................... 167
6.6.3 COMMAND AND RESPONSE INFORMATION .......................................................................................................... 167
6.7 TRANSMIT MOS (MESSAGE ORIENTED SIGNALING) PROCESSOR ........................................................ 168
6.7.1 DISCUSSION OF MOS ............................................................................................................................................... 168
6.7.2 PERIODIC PERFORMANCE REPORT ...................................................................................................................... 168
6.7.3 TRANSMISSION-ERROR EVENT .............................................................................................................................. 169
6.7.4 PATH AND TEST SIGNAL IDENTIFICATION MESSAGE ......................................................................................... 169
6.7.5 FRAME STRUCTURE ................................................................................................................................................. 169
6.7.6 FLAG SEQUENCE ...................................................................................................................................................... 169
6.7.7 ADDRESS FIELD ........................................................................................................................................................ 170
6.7.8 ADDRESS FIELD EXTENSION BIT (EA) ................................................................................................................... 170


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