
XRT86L30
REV. P1.0.1
PRELIMINARY
SINGLE T1/E1/J1 FRAMER/LIU COMBO
III
XRT84V24 COMPATIBLE 2.048MBIT/S MODE .......................................................................................................... 199
10.2 TRANSMIT/RECEIVE HIGH-SPEED BACK-PLANE INTERFACE ...............................................................202
10.2.1 NON-MULTIPLEXED HIGH-SPEED MODE ............................................................................................................. 202
10.2.2 MULTIPLEXED HIGH-SPEED MODE ...................................................................................................................... 205
10.3 BRIEF DISCUSSION OF COMMON CHANNEL SIGNALING IN E1 FRAMING FORMAT ..........................211
10.4 BRIEF DISCUSSION OF CHANNEL ASSOCIATED SIGNALING IN E1 FRAMING FORMAT ...................211
10.5 INSERT/EXTRACT SIGNALING BITS FROM TSCR REGISTER .................................................................211
10.6 INSERT/EXTRACT SIGNALING BITS FROM TXCHN[0]_N/TXSIG PIN ......................................................211
10.7 ENABLE CHANNEL ASSOCIATED SIGNALING AND SIGNALING DATA SOURCE CONTROL .............212
11.0 THE DS1 TRANSMIT/RECEIVE FRAMER ........................................................................................213
11.1 DESCRIPTION OF THE TRANSMIT/RECEIVE PAYLOAD DATA INPUT INTERFACE BLOCK ................213
11.1.1 BRIEF DISCUSSION OF THE TRANSMIT/RECEIVE PAYLOAD DATA INPUT INTERFACE BLOCK OPERATING AT
1.544MBIT/S MODE ..................................................................................................................................................... 213
11.2 TRANSMIT/RECEIVE HIGH-SPEED BACK-PLANE INTERFACE ...............................................................216
11.2.1 T1 TRANSMIT/RECEIVE INTERFACE - MVIP 2.048 MHZ ...................................................................................... 216
11.2.2 NON-MULTIPLEXED HIGH-SPEED MODE ............................................................................................................. 217
11.2.3 MULTIPLEXED HIGH-SPEED MODE ...................................................................................................................... 219
11.3 BRIEF DISCUSSION OF ROBBED-BIT SIGNALING IN DS1 FRAMING FORMAT ....................................225
11.3.1 CONFIGURE THE FRAMER TO TRANSMIT ROBBED-BIT SIGNALING ............................................................... 225
11.3.2 INSERT SIGNALING BITS FROM TSCR REGISTER .............................................................................................. 225
11.3.3 INSERT SIGNALING BITS FROM TXSIG_N PIN ..................................................................................................... 226
12.0 ALARMS AND ERROR CONDITIONS ..............................................................................................228
12.1 AIS ALARM ....................................................................................................................................................228
12.2 RED ALARM ..................................................................................................................................................230
12.3 YELLOW ALARM ..........................................................................................................................................231
12.4 BIPOLAR VIOLATION ...................................................................................................................................233
12.5 E1 BRIEF DISCUSSION OF ALARMS AND ERROR CONDITIONS ...........................................................235
12.5.1 HOW TO CONFIGURE THE FRAMER TO TRANSMIT AIS .................................................................................... 240
12.5.2 HOW TO CONFIGURE THE FRAMER TO GENERATE RED ALARM ................................................................... 241
12.5.3 HOW TO CONFIGURE THE FRAMER TO TRANSMIT YELLOW ALARM ............................................................. 241
12.5.4 TRANSMIT YELLOW ALARM .................................................................................................................................. 242
12.5.5 TRANSMIT CAS MULTI-FRAME YELLOW ALARM ............................................................................................... 242
12.6 T1 BRIEF DISCUSSION OF ALARMS AND ERROR CONDITIONS ............................................................243
12.6.1 HOW TO CONFIGURE THE FRAMER TO TRANSMIT AIS .................................................................................... 246
12.6.2 HOW TO CONFIGURE THE FRAMER TO GENERATE RED ALARM ................................................................... 247
12.6.3 HOW TO CONFIGURE THE FRAMER TO TRANSMIT YELLOW ALARM ............................................................. 247
12.6.4 TRANSMIT YELLOW ALARM IN SF MODE ............................................................................................................ 248
12.6.5 TRANSMIT YELLOW ALARM IN ESF MODE .......................................................................................................... 248
12.6.6 TRANSMIT YELLOW ALARM IN N MODE .............................................................................................................. 248
12.6.7 TRANSMIT YELLOW ALARM IN T1DM MODE ....................................................................................................... 248
13.0 PERFORMANCE MONITORING (PMON) .........................................................................................251
13.1 RECEIVE LINE CODE VIOLATION COUNTER (16-BIT) ..............................................................................251
13.2 16-BIT RECEIVE FRAME ALIGNMENT ERROR COUNTER (16-BIT) .........................................................251
13.3 RECEIVE SEVERELY ERRORED FRAME COUNTER (8-BIT) ....................................................................251
13.4 RECEIVE CRC-6/4 BLOCK ERROR COUNTER (16-BIT) ............................................................................251
13.5 RECEIVE FAR-END BLOCK ERROR COUNTER (16-BIT) ..........................................................................251
13.6 RECEIVE SLIP COUNTER (8-BIT) ................................................................................................................251
13.7 RECEIVE LOSS OF FRAME COUNTER (8-BIT) ..........................................................................................251
13.8 RECEIVE CHANGE OF FRAME ALIGNMENT COUNTER (8-BIT) ..............................................................251
13.9 FRAME CHECK SEQUENCE ERROR COUNTERS 1, 2, AND 3 (8-BIT EACH) .........................................251
13.10 PRBS ERROR COUNTER (16-BIT) .............................................................................................................251
13.11 TRANSMIT SLIP COUNTER (8-BIT) ...........................................................................................................251
13.12 EXCESSIVE ZERO VIOLATION COUNTER (16-BIT) .................................................................................252
14.0 APPENDIX A: DS-1/E1 FRAMING FORMATS ..................................................................................253
14.1 THE E1 FRAMING STRUCTURE ..................................................................................................................253
14.1.1 FAS FRAME .............................................................................................................................................................. 253
14.1.2 NON-FAS FRAME ..................................................................................................................................................... 254
14.2 THE E1 MULTI-FRAME STRUCTURE ..........................................................................................................255
14.2.1 THE CRC MULTI-FRAME STRUCTURE .................................................................................................................. 255
14.2.2 CAS MULTI-FRAMES AND CHANNEL ASSOCIATED SIGNALING ...................................................................... 256
14.3 THE DS1 FRAMING STRUCTURE ................................................................................................................258
14.4 T1 SUPER FRAME FORMAT (SF) ................................................................................................................259