XRT84L38 Datasheet, PDF (15/451 Pages) Exar Corporation – OCTAL T1/E1/J1 FRAMER

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XRT84L38
OCTAL T1/E1/J1 FRAMER
REV. 1.0.0
11.2.6 How to configure the framer to input E bits from different sources ....................................... 369
SYNCHRONIZATION MUX REGISTER (SMR) (INDIRECT ADDRESS = 0XN0H, 0X09H) .................................. 369
SYNCHRONIZATION MUX REGISTER (SMR) (INDIRECT ADDRESS = 0XN0H, 0X09H) ................................. 369
11.3 HOW TO CONFIGURE THE FRAMER TO APPLY DATA AND SIGNALING CONDITIONING TO E1 PAYLOAD DATA
ON A PER-CHANNEL BASIS .............................................................................................................................. 370
SYNCHRONIZATION MUX REGISTER (SMR) (INDIRECT ADDRESS = 0XN0H, 0X09H) ................................. 370
TRANSMIT CHANNEL CONTROL REGISTER (TCCR) (INDIRECT ADDRESS = 0XN2H, 0X00H - 0X1FH) .......... 371
11.4 HOW TO CONFIGURE THE XRT84L38 FRAMER TO TRANSMIT SIGNALING INFORMATION ...................... 372
11.4.1 Brief Discussion of Common Channel Signaling in E1 Framing Format .............................. 372
11.4.2 Brief Discussion of Channel Associated Signaling in E1 Framing Format ........................... 372
USER IDLE CODE REGISTER (UCR) (INDIRECT ADDRESS = 0XN02H, 0X20H - 0X3FH) ............................. 372
11.4.3 Configure the framer to transmit Channel Associated Signaling .......................................... 373
TRANSMIT SIGNALING CONTROL REGISTER (TSCR) (INDIRECT ADDRESS = 0XN2H, 0X40H - 0X5FH) ....... 374
Figure 117. Timing Diagram of the TxSig_n Input ...................................................................... 375
TRANSMIT INTERFACE CONTROL REGISTER (TICR) (INDIRECT ADDRESS = 0XN0H, 0X20H) ...................... 375
Figure 118. Timing Diagram of the TxOH_n Input ...................................................................... 375
11.5 HOW TO CONFIGURE THE XRT84L38 FRAMER TO GENERATE AND TRANSMIT ALARMS AND ERROR INDICA-
TIONS TO REMOTE TERMINAL .......................................................................................................................... 376
11.5.1 Brief discussion of alarms and error conditions .................................................................... 376
TRANSMIT SIGNALING CONTROL REGISTER (TSCR) (INDIRECT ADDRESS = 0XN2H, 0X40H - 0X57H) ....... 376
Figure 119. Simple Diagram of E1 system model ....................................................................... 377
Figure 120. Generation of Yellow Alarm by the Repeater upon detection of line failure ........ 378
Figure 121. Generation of AIS by the Repeater upon detection of line failure ........................ 379
Figure 122. Generation of Yellow Alarm by the CPE upon detection of AIS originated by the Re-
peater ................................................................................................................................. 380
Figure 123. Generation of CAS Multi-frame Yellow Alarm and AIS16 by the Repeater .......... 381
11.5.2 How to configure the framer to transmit AIS ......................................................................... 382
Figure 124. Generation of CAS Multi-fram Yellow Alarm by the CPE upon detection of “AIS16”
pattern sent by the Repeater ........................................................................................... 382
11.5.3 How to configure the framer to generate Red Alarm ............................................................ 383
11.5.4 How to configure the framer to transmit Yellow Alarm ......................................................... 383
ALARM GENERATION REGISTER (AGR) (INDIRECT ADDRESS = 0XN0H, 0X08H) ........................................ 383
ALARM GENERATION REGISTER (AGR) (INDIRECT ADDRESS = 0XN0H, 0X08H) ........................................ 383
ALARM GENERATION REGISTER (AGR) (INDIRECT ADDRESS = 0XN0H, 0X08H) ........................................ 385
12.0 E1 Receive Framer Block ................................................................................................................... 386
12.1 HOW TO CONFIGURE XRT84L38 TO OPERATE IN E1 MODE .............................................................. 386
12.2 HOW TO CONFIGURE THE FRAMER TO RECEIVE DATA IN VARIOUS E1 FRAMING FORMATS ................. 386
12.2.1 How to configure the framer to choose FAS searching algorithm ........................................ 386
CLOCK SELECT REGISTER (CSR)...................................................(INDIRECT ADDRESS = 0XN0H, 0X00H) 386
12.2.2 How to configure the framer to enable CRC-4 Multi-frame alignment and select the locking crite-
ria ..................................................................................................................................................... 387
12.2.3 How to configure the framer to enable CAS Multi-frame alignment ..................................... 387
FRAMING SELECT REGISTER (FSR) (INDIRECT ADDRESS = 0XN0H, 0X07H) ............................................. 387
FRAMING SELECT REGISTER (FSR) (INDIRECT ADDRESS = 0XN0H, 0X07H) ............................................. 387
12.3 HOW TO CONFIGURE THE FRAMER TO APPLY DATA AND SIGNALING CONDITIONING TO RECEIVED E1 PAY-
LOAD DATA ON A PER-CHANNEL BASIS ............................................................................................................ 388
FRAMING SELECT REGISTER (FSR) (INDIRECT ADDRESS = 0XN0H, 0X07H) ............................................. 388
RECEIVE CHANNEL CONTROL REGISTER (RCCR) (INDIRECT ADDRESS = 0XN2H, 0X60H - 0X7FH) .......... 389
12.4 HOW TO CONFIGURE THE XRT84L38 FRAMER TO EXTRACT ROBBED-BIT SIGNALING INFORMATION ... 390
12.4.1 Configure the framer to receive and extract Robbed-bit Signaling ....................................... 390
RECEIVE USER IDLE CODE REGISTER (UCR) (INDIRECT ADDRESS = 0XN02H, 0X80H - 0X97H) .............. 390
RECEIVE SIGNALING CONTROL REGISTER (RSCR) (INDIRECT ADDRESS = 0XN2H, 0XA0H - 0XB7H) ........ 390
FRAMER INTERRUPT ENABLE REGISTER (FIER) (INDIRECT ADDRESS = 0XNAH, 0X05H) ............................ 391
BLOCK INTERRUPT ENABLE REGISTER (BIER) (INDIRECT ADDRESS = 0XNAH, 0X00H) ............................. 391
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