XRT84L38 データシートの表示（PDF） - Exar Corporation

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XRT84L38

OCTAL T1/E1/J1 FRAMER

Exar Corporation 

XRT84L38

REV. 1.0.1

OCTAL T1/E1/J1 FRAMER

11.2.2 HOW TO CONFIGURE THE FRAMER TO ENABLE CRC-4 MULTI-FRAME ALIGNMENT AND SELECT THE LOCKING

CRITERIA..................................................................................................................................................................... 353

FRAMING SELECT REGISTER (FSR) (INDIRECT ADDRESS = 0XN0H, 0X07H).............................................. 353

11.2.3 HOW TO CONFIGURE THE FRAMER TO ENABLE CAS MULTI-FRAME ALIGNMENT ...................................... 353

FRAMING SELECT REGISTER (FSR) (INDIRECT ADDRESS = 0XN0H, 0X07H).............................................. 354

11.2.4 HOW TO CONFIGURE THE FRAMER TO INPUT THE FRAMING ALIGNMENT BITS FROM DIFFERENT SOURCES

354

SYNCHRONIZATION MUX REGISTER (SMR) (INDIRECT ADDRESS = 0XN0H, 0X09H) ................................... 354

11.2.5 HOW TO CONFIGURE THE FRAMER TO INPUT CRC-4 BITS FROM DIFFERENT SOURCES .......................... 355

SYNCHRONIZATION MUX REGISTER (SMR) (INDIRECT ADDRESS = 0XN0H, 0X09H) .................................. 355

11.2.6 HOW TO CONFIGURE THE FRAMER TO INPUT E BITS FROM DIFFERENT SOURCES ................................... 355

SYNCHRONIZATION MUX REGISTER (SMR) (INDIRECT ADDRESS = 0XN0H, 0X09H) .................................. 356

11.3 HOW TO CONFIGURE THE FRAMER TO APPLY DATA AND SIGNALING CONDITIONING TO E1 PAYLOAD

DATA ON A PER-CHANNEL BASIS............................................................................................................ 356

TRANSMIT CHANNEL CONTROL REGISTER (TCCR) (INDIRECT ADDRESS = 0XN2H, 0X00H - 0X1FH) .......... 357

USER IDLE CODE REGISTER (UCR) (INDIRECT ADDRESS = 0XN02H, 0X20H - 0X3FH) ............................. 358

11.4 HOW TO CONFIGURE THE XRT84L38 FRAMER TO TRANSMIT SIGNALING INFORMATION .............. 358

11.4.1 BRIEF DISCUSSION OF COMMON CHANNEL SIGNALING IN E1 FRAMING FORMAT ..................................... 358

11.4.2 BRIEF DISCUSSION OF CHANNEL ASSOCIATED SIGNALING IN E1 FRAMING FORMAT .............................. 358

11.4.3 CONFIGURE THE FRAMER TO TRANSMIT CHANNEL ASSOCIATED SIGNALING ........................................... 359

11.4.3.1 INSERT SIGNALING BITS FROM TSCR REGISTER ............................................................................................... 360

TRANSMIT SIGNALING CONTROL REGISTER (TSCR) (INDIRECT ADDRESS = 0XN2H, 0X40H - 0X5FH)........ 360

11.4.3.2 INSERT SIGNALING BITS FROM TXSIG_N PIN ..................................................................................................... 360

FIGURE 117. TIMING DIAGRAM OF THE TXSIG_N INPUT................................................................................................................. 361

TRANSMIT INTERFACE CONTROL REGISTER (TICR) (INDIRECT ADDRESS = 0XN0H, 0X20H)....................... 361

11.4.3.3 INSERT SIGNALING BITS FROM TXOH_N PIN ..................................................................................................... 361

FIGURE 118. TIMING DIAGRAM OF THE TXOH_N INPUT................................................................................................................. 362

11.4.3.4 INSERT SIGNALING DATA FROM TXSER_N PIN ................................................................................................... 362

11.4.3.5 ENABLE CHANNEL ASSOCIATED SIGNALING AND SIGNALING DATA SOURCE CONTROL ...................................... 362

TRANSMIT SIGNALING CONTROL REGISTER (TSCR) (INDIRECT ADDRESS = 0XN2H, 0X40H - 0X57H) ........ 362

11.5 HOW TO CONFIGURE THE XRT84L38 FRAMER TO GENERATE AND TRANSMIT ALARMS AND ERROR IN-

DICATIONS TO REMOTE TERMINAL ......................................................................................................... 363

11.5.1 BRIEF DISCUSSION OF ALARMS AND ERROR CONDITIONS ............................................................................ 363

FIGURE 119. SIMPLE DIAGRAM OF E1 SYSTEM MODEL .................................................................................................................. 363

FIGURE 120. GENERATION OF YELLOW ALARM BY THE REPEATER UPON DETECTION OF LINE FAILURE ............................................ 364

FIGURE 121. GENERATION OF AIS BY THE REPEATER UPON DETECTION OF LINE FAILURE .............................................................. 365

FIGURE 122. GENERATION OF YELLOW ALARM BY THE CPE UPON DETECTION OF AIS ORIGINATED BY THE REPEATER ................... 366

FIGURE 123. GENERATION OF CAS MULTI-FRAME YELLOW ALARM AND AIS16 BY THE REPEATER................................................. 367

FIGURE 124. GENERATION OF CAS MULTI-FRAM YELLOW ALARM BY THE CPE UPON DETECTION OF “AIS16” PATTERN SENT BY THE RE-

PEATER ....................................................................................................................................................................... 368

11.5.2 HOW TO CONFIGURE THE FRAMER TO TRANSMIT AIS .................................................................................... 368

ALARM GENERATION REGISTER (AGR) (INDIRECT ADDRESS = 0XN0H, 0X08H)......................................... 369

11.5.3 HOW TO CONFIGURE THE FRAMER TO GENERATE RED ALARM ................................................................... 369

ALARM GENERATION REGISTER (AGR) (INDIRECT ADDRESS = 0XN0H, 0X08H)......................................... 369

11.5.4 HOW TO CONFIGURE THE FRAMER TO TRANSMIT YELLOW ALARM ............................................................. 369

11.5.4.1 TRANSMIT YELLOW ALARM ............................................................................................................................... 370

11.5.4.2 TRANSMIT CAS MULTI-FRAME YELLOW ALARM ................................................................................................ 370

ALARM GENERATION REGISTER (AGR) (INDIRECT ADDRESS = 0XN0H, 0X08H)......................................... 371

12.0 E1 RECEIVE FRAMER BLOCK ........................................................................................................ 372

12.1 HOW TO CONFIGURE XRT84L38 TO OPERATE IN E1 MODE.................................................................. 372

CLOCK SELECT REGISTER (CSR) (INDIRECT ADDRESS = 0XN0H, 0X00H)................................................. 372

12.2 HOW TO CONFIGURE THE FRAMER TO RECEIVE DATA IN VARIOUS E1 FRAMING FORMATS ........ 372

12.2.1 HOW TO CONFIGURE THE FRAMER TO CHOOSE FAS SEARCHING ALGORITHM ......................................... 372

FRAMING SELECT REGISTER (FSR) (INDIRECT ADDRESS = 0XN0H, 0X07H).............................................. 373

12.2.2 HOW TO CONFIGURE THE FRAMER TO ENABLE CRC-4 MULTI-FRAME ALIGNMENT AND SELECT THE LOCKING

CRITERIA..................................................................................................................................................................... 373

FRAMING SELECT REGISTER (FSR) (INDIRECT ADDRESS = 0XN0H, 0X07H).............................................. 373

12.2.3 HOW TO CONFIGURE THE FRAMER TO ENABLE CAS MULTI-FRAME ALIGNMENT ...................................... 373

FRAMING SELECT REGISTER (FSR) (INDIRECT ADDRESS = 0XN0H, 0X07H).............................................. 374

12.3 HOW TO CONFIGURE THE FRAMER TO APPLY DATA AND SIGNALING CONDITIONING TO RECEIVED E1

PAYLOAD DATA ON A PER-CHANNEL BASIS ......................................................................................... 374

RECEIVE CHANNEL CONTROL REGISTER (RCCR) (INDIRECT ADDRESS = 0XN2H, 0X60H - 0X7FH) ........... 375

XI

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