
XRT86VL3X
III
T1/E1/J1 FRAMER/LIU COMBO - ARCHITECTURE DESCRIPTION
REV. 1.2.2
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