XRT86VL3X datasheet(6/154 Pages) EXAR

6 / 154 page

XRT86VL3X

III

T1/E1/J1 FRAMER/LIU COMBO - ARCHITECTURE DESCRIPTION

REV. 1.2.3

8.2.1 T1 TRANSMIT/RECEIVE INTERFACE - MVIP 2.048 MHZ .......................................................................................... 73

8.2.2 NON-MULTIPLEXED HIGH-SPEED MODE ................................................................................................................. 74

8.2.3 MULTIPLEXED HIGH-SPEED MODE .......................................................................................................................... 76

8.3 BRIEF DISCUSSION OF ROBBED-BIT SIGNALING IN DS1 FRAMING FORMAT ........................................ 85

8.3.1 CONFIGURE THE FRAMER TO TRANSMIT ROBBED-BIT SIGNALING ................................................................... 86

8.3.2 INSERT SIGNALING BITS FROM TSCR REGISTER .................................................................................................. 86

8.3.3 INSERT SIGNALING BITS FROM TXSIG_N PIN ......................................................................................................... 87

9.0 ALARMS AND ERROR CONDITIONS ..................................................................................................89

9.1 AIS ALARM ........................................................................................................................................................ 89

9.2 RED ALARM ...................................................................................................................................................... 91

9.3 YELLOW ALARM .............................................................................................................................................. 92

9.4 BIPOLAR VIOLATION ....................................................................................................................................... 94

9.5 E1 BRIEF DISCUSSION OF ALARMS AND ERROR CONDITIONS ............................................................... 96

9.5.1 HOW TO CONFIGURE THE FRAMER TO TRANSMIT AIS ...................................................................................... 102

9.5.2 HOW TO CONFIGURE THE FRAMER TO GENERATE RED ALARM ..................................................................... 103

9.5.3 HOW TO CONFIGURE THE FRAMER TO TRANSMIT YELLOW ALARM ............................................................... 103

9.5.4 TRANSMIT YELLOW ALARM .................................................................................................................................... 104

9.5.5 TRANSMIT CAS MULTI-FRAME YELLOW ALARM ................................................................................................. 104

9.6 T1 BRIEF DISCUSSION OF ALARMS AND ERROR CONDITIONS .............................................................. 105

9.6.1 HOW TO CONFIGURE THE FRAMER TO TRANSMIT AIS ...................................................................................... 108

9.6.2 HOW TO CONFIGURE THE FRAMER TO GENERATE RED ALARM ..................................................................... 109

9.6.3 HOW TO CONFIGURE THE FRAMER TO TRANSMIT YELLOW ALARM ............................................................... 109

9.6.4 TRANSMIT YELLOW ALARM IN SF MODE .............................................................................................................. 110

9.6.5 TRANSMIT YELLOW ALARM IN ESF MODE ............................................................................................................ 110

9.6.6 TRANSMIT YELLOW ALARM IN N MODE ................................................................................................................ 110

9.6.7 TRANSMIT YELLOW ALARM IN T1DM MODE ......................................................................................................... 110

10.0 APPENDIX A: DS-1/E1 FRAMING FORMATS ..................................................................................112

10.1 THE E1 FRAMING STRUCTURE .................................................................................................................. 112

10.1.1 FAS FRAME .............................................................................................................................................................. 112

10.1.2 NON-FAS FRAME ..................................................................................................................................................... 113

10.2 THE E1 MULTI-FRAME STRUCTURE .......................................................................................................... 114

10.2.1 THE CRC MULTI-FRAME STRUCTURE .................................................................................................................. 114

10.2.2 CAS MULTI-FRAMES AND CHANNEL ASSOCIATED SIGNALING ...................................................................... 115

10.3 THE DS1 FRAMING STRUCTURE ................................................................................................................ 117

10.4 T1 SUPER FRAME FORMAT (SF) ................................................................................................................ 118

10.5 T1 EXTENDED SUPERFRAME FORMAT (ESF) .......................................................................................... 119

10.6 T1 NON-SIGNALING FRAME FORMAT ....................................................................................................... 121

10.7 T1 DATA MULTIPLEXED FRAMING FORMAT (T1DM) ............................................................................... 121

10.8 SLC-96 FORMAT (SLC-96) ........................................................................................................................... 122

10.9 DMA WRITE CYCLE TIMING ........................................................................................................................ 142

10.10 DMA READ CYCLE TIMING ........................................................................................................................ 142

XRT86VL3X Datasheet(PDF) 6 Page - Exar Corporation

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