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XRT83L38IV Datasheet(PDF) 7 Page - Exar Corporation |
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XRT83L38IV Datasheet(HTML) 7 Page - Exar Corporation |
7 / 91 page XRT83L38 OCTAL T1/E1/J1 LH/SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR REV. 1.0.0 II Internal Receive Termination Mode.........................................................................................................31 TABLE 6: RECEIVE TERMINATION CONTROL .............................................................................................................. 32 FIGURE 13. SIMPLIFIED DIAGRAM FOR THE INTERNAL RECEIVE AND TRANSMIT TERMINATION MODE ........................... 32 TABLE 7: RECEIVE TERMINATIONS ............................................................................................................................ 32 FIGURE 14. SIMPLIFIED DIAGRAM FOR T1 IN THE EXTERNAL TERMINATION MODE (RXTSEL= 0)................................ 33 TRANSMITTER (CHANNELS 0 - 7) .............................................................................................. 34 Transmit Termination Mode.....................................................................................................................34 External Transmit Termination Mode ......................................................................................................34 FIGURE 15. SIMPLIFIED DIAGRAM FOR E1 IN EXTERNAL TERMINATION MODE (RXTSEL= 0) ...................................... 34 TABLE 8: TRANSMIT TERMINATION CONTROL ............................................................................................................ 34 TABLE 9: TERMINATION SELECT CONTROL................................................................................................................ 34 REDUNDANCY APPLICATIONS............................................................................................... 35 TABLE 10: TRANSMIT TERMINATION CONTROL .......................................................................................................... 35 TABLE 11: TRANSMIT TERMINATIONS ........................................................................................................................ 35 TYPICAL REDUNDANCY SCHEMES ....................................................................................... 36 FIGURE 16. SIMPLIFIED BLOCK DIAGRAM OF THE TRANSMIT SECTION FOR 1:1 & 1+1 REDUNDANCY .......................... 37 FIGURE 17. SIMPLIFIED BLOCK DIAGRAM - RECEIVE SECTION FOR 1:1 AND 1+1 REDUNDANCY .................................. 37 FIGURE 18. SIMPLIFIED BLOCK DIAGRAM - TRANSMIT SECTION FOR N+1 REDUNDANCY............................................. 38 FIGURE 19. SIMPLIFIED BLOCK DIAGRAM - RECEIVE SECTION FOR N+1 REDUNDANCY............................................... 39 PATTERN TRANSMIT AND DETECT FUNCTION................................................................................. 40 TRANSMIT ALL ONES (TAOS)....................................................................................................... 40 NETWORK LOOP CODE DETECTION AND TRANSMISSION ................................................................ 40 TABLE 12: PATTERN TRANSMISSION CONTROL .......................................................................................................... 40 TABLE 13: LOOP-CODE DETECTION CONTROL .......................................................................................................... 40 TRANSMIT AND DETECT QUASI-RANDOM SIGNAL SOURCE (TDQRSS)........................................... 41 LOOP-BACK MODES ..................................................................................................................... 42 LOCAL ANALOG LOOP-BACK (ALOOP) ......................................................................................... 42 TABLE 14: LOOP-BACK CONTROL IN HARDWARE MODE .............................................................................................. 42 TABLE 15: LOOP-BACK CONTROL IN HOST MODE....................................................................................................... 42 FIGURE 20. LOCAL ANALOG LOOP-BACK SIGNAL FLOW .............................................................................................. 42 REMOTE LOOP-BACK (RLOOP).................................................................................................... 43 FIGURE 21. REMOTE LOOP-BACK MODE WITH JITTER ATTENUATOR SELECTED IN RECEIVE PATH.................................. 43 FIGURE 22. REMOTE LOOP-BACK MODE WITH JITTER ATTENUATOR SELECTED IN TRANSMIT PATH ............................... 43 DIGITAL LOOP-BACK (DLOOP)..................................................................................................... 44 DUAL LOOP-BACK ........................................................................................................................ 44 FIGURE 23. DIGITAL LOOP-BACK MODE WITH JITTER ATTENUATOR SELECTED IN TRANSMIT PATH ................................ 44 FIGURE 24. SIGNAL FLOW IN DUAL LOOP-BACK MODE ............................................................................................... 44 MICROPROCESSOR PARALLEL INTERFACE..............................................................45 TABLE 16: MICROPROCESSOR INTERFACE SIGNAL DESCRIPTION ................................................................................ 45 MICROPROCESSOR REGISTER TABLES .......................................................................................... 46 TABLE 17: MICROPROCESSOR REGISTER ADDRESS .................................................................................................. 46 TABLE 18: MICROPROCESSOR REGISTER BIT DESCRIPTION ...................................................................................... 46 MICROPROCESSOR REGISTER DESCRIPTIONS ............................................................................... 50 TABLE 19: MICROPROCESSOR REGISTER #0, BIT DESCRIPTION ................................................................................ 50 TABLE 20: MICROPROCESSOR REGISTER #1, BIT DESCRIPTION ................................................................................ 51 TABLE 21: MICROPROCESSOR REGISTER #2, BIT DESCRIPTION ................................................................................ 53 TABLE 22: MICROPROCESSOR REGISTER #3, BIT DESCRIPTION ................................................................................ 55 TABLE 23: MICROPROCESSOR REGISTER #4, BIT DESCRIPTION ................................................................................ 57 TABLE 24: MICROPROCESSOR REGISTER #5, BIT DESCRIPTION ................................................................................ 58 TABLE 25: MICROPROCESSOR REGISTER #6, BIT DESCRIPTION ................................................................................ 60 TABLE 26: MICROPROCESSOR REGISTER #7, BIT DESCRIPTION ................................................................................ 61 TABLE 27: MICROPROCESSOR REGISTER #8, BIT DESCRIPTION ................................................................................ 62 TABLE 28: MICROPROCESSOR REGISTER #9, BIT DESCRIPTION ................................................................................ 62 TABLE 29: MICROPROCESSOR REGISTER #10, BIT DESCRIPTION .............................................................................. 63 TABLE 30: MICROPROCESSOR REGISTER #11, BIT DESCRIPTION .............................................................................. 63 TABLE 31: MICROPROCESSOR REGISTER #12, BIT DESCRIPTION .............................................................................. 64 |
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