XRT86VL3X
III
T1/E1/J1 FRAMER/LIU COMBO - ARCHITECTURE DESCRIPTION
REV. 1.2.0
7.3 BRIEF DISCUSSION OF ROBBED-BIT SIGNALING IN DS1 FRAMING FORMAT ........................................81
7.3.1 CONFIGURE THE FRAMER TO TRANSMIT ROBBED-BIT SIGNALING ................................................................... 82
7.3.2 INSERT SIGNALING BITS FROM TSCR REGISTER .................................................................................................. 82
7.3.3 INSERT SIGNALING BITS FROM TXSIG_N PIN ......................................................................................................... 83
8.0 ALARMS AND ERROR CONDITIONS ..................................................................................................85
8.1 AIS ALARM ........................................................................................................................................................85
8.2 RED ALARM ......................................................................................................................................................87
8.3 YELLOW ALARM ..............................................................................................................................................88
8.4 BIPOLAR VIOLATION .......................................................................................................................................90
8.5 E1 BRIEF DISCUSSION OF ALARMS AND ERROR CONDITIONS ...............................................................92
8.5.1 HOW TO CONFIGURE THE FRAMER TO TRANSMIT AIS ........................................................................................ 98
8.5.2 HOW TO CONFIGURE THE FRAMER TO GENERATE RED ALARM ....................................................................... 99
8.5.3 HOW TO CONFIGURE THE FRAMER TO TRANSMIT YELLOW ALARM ................................................................. 99
8.5.4 TRANSMIT YELLOW ALARM .................................................................................................................................... 100
8.5.5 TRANSMIT CAS MULTI-FRAME YELLOW ALARM ................................................................................................. 100
8.6 T1 BRIEF DISCUSSION OF ALARMS AND ERROR CONDITIONS ..............................................................101
8.6.1 HOW TO CONFIGURE THE FRAMER TO TRANSMIT AIS ...................................................................................... 104
8.6.2 HOW TO CONFIGURE THE FRAMER TO GENERATE RED ALARM ..................................................................... 105
8.6.3 HOW TO CONFIGURE THE FRAMER TO TRANSMIT YELLOW ALARM ............................................................... 105
8.6.4 TRANSMIT YELLOW ALARM IN SF MODE .............................................................................................................. 106
8.6.5 TRANSMIT YELLOW ALARM IN ESF MODE ............................................................................................................ 106
8.6.6 TRANSMIT YELLOW ALARM IN N MODE ................................................................................................................ 106
8.6.7 TRANSMIT YELLOW ALARM IN T1DM MODE ......................................................................................................... 106
9.0 APPENDIX A: DS-1/E1 FRAMING FORMATS ....................................................................................108
9.1 THE E1 FRAMING STRUCTURE ....................................................................................................................108
9.1.1 FAS FRAME ................................................................................................................................................................ 108
9.1.2 NON-FAS FRAME ....................................................................................................................................................... 109
9.2 THE E1 MULTI-FRAME STRUCTURE ............................................................................................................110
9.2.1 THE CRC MULTI-FRAME STRUCTURE .................................................................................................................... 110
9.2.2 CAS MULTI-FRAMES AND CHANNEL ASSOCIATED SIGNALING ........................................................................ 111
9.3 THE DS1 FRAMING STRUCTURE ..................................................................................................................113
9.4 T1 SUPER FRAME FORMAT (SF) ..................................................................................................................114
9.5 T1 EXTENDED SUPERFRAME FORMAT (ESF) ............................................................................................115
9.6 T1 NON-SIGNALING FRAME FORMAT .........................................................................................................117
9.7 T1 DATA MULTIPLEXED FRAMING FORMAT (T1DM) .................................................................................117
9.8 SLC-96 FORMAT (SLC-96) .............................................................................................................................118