XRT75VL00_08 Datasheet, PDF (5/50 Pages) Exar Corporation – E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER ATTENUATOR

REV. 1.0.6
XRT75VL00
E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER ATTENUATOR
5.1.1 INTERFERENCE TOLERANCE: ................................................................................................................................ 28
FIGURE 17. INTERFERENCE MARGIN TEST SET UP FOR DS3/STS-1................................................................................................ 29
FIGURE 18. INTERFERENCE MARGIN TEST SET UP FOR E3. ............................................................................................................ 29
TABLE 9: INTERFERENCE MARGIN TEST RESULTS ........................................................................................................................... 30
5.2 CLOCK AND DATA RECOVERY: .................................................................................................................. 30
5.3 B3ZS/HDB3 DECODER: ................................................................................................................................ 30
5.4 LOS (LOSS OF SIGNAL) DETECTOR: ......................................................................................................... 30
5.4.1 DS3/STS-1 LOS CONDITION: .................................................................................................................................... 30
TABLE 10: THE ALOS (ANALOG LOS) DECLARATION AND CLEARANCE THRESHOLDS FOR A GIVEN SETTING OF REQEN (DS3 AND STS-1
APPLICATIONS) ............................................................................................................................................................... 31
DISABLING ALOS/DLOS DETECTOR: ........................................................................................................... 31
5.4.2 E3 LOS CONDITION:.................................................................................................................................................. 31
FIGURE 19. LOSS OF SIGNAL DEFINITION FOR E3 AS PER ITU-T G.775.......................................................................................... 31
FIGURE 20. LOSS OF SIGNAL DEFINITION FOR E3 AS PER ITU-T G.775. ......................................................................................... 32
5.4.3 MUTING THE RECOVERED DATA WITH LOS CONDITION:................................................................................... 32
6.0 JITTER: ................................................................................................................................................ 33
6.1 JITTER TOLERANCE - RECEIVER: .............................................................................................................. 33
FIGURE 21. JITTER TOLERANCE MEASUREMENTS ........................................................................................................................... 33
6.1.1 DS3/STS-1 JITTER TOLERANCE REQUIREMENTS:............................................................................................... 33
FIGURE 22. INPUT JITTER TOLERANCE FOR DS3/STS-1................................................................................................................ 34
6.1.2 E3 JITTER TOLERANCE REQUIREMENTS:............................................................................................................. 34
FIGURE 23. INPUT JITTER TOLERANCE FOR E3 .............................................................................................................................. 34
TABLE 11: JITTER AMPLITUDE VERSUS MODULATION FREQUENCY (JITTER TOLERANCE) .................................................................. 35
6.2 JITTER TRANSFER - RECEIVER/TRANSMITTER: ...................................................................................... 35
TABLE 12: JITTER TRANSFER SPECIFICATIONS................................................................................................................................ 35
6.3 JITTER GENERATION: .................................................................................................................................. 35
6.4 JITTER ATTENUATOR: ................................................................................................................................. 35
TABLE 13: JITTER TRANSFER PASS MASKS .................................................................................................................................... 36
FIGURE 24. JITTER TRANSFER REQUIREMENTS AND JITTER ATTENUATOR PERFORMANCE................................................................ 36
7.0 SERIAL HOST INTERFACE: ............................................................................................................... 37
TABLE 14: FUNCTIONS OF SHARED PINS ......................................................................................................................................... 37
TABLE 15: REGISTER MAP AND BIT NAMES .................................................................................................................................... 37
TABLE 16: REGISTER MAP DESCRIPTION ........................................................................................................................................ 38
TABLE 17: REGISTER MAP DESCRIPTION - GLOBAL......................................................................................................................... 42
8.0 DIAGNOSTIC FEATURES: ................................................................................................................. 44
8.1 PRBS GENERATOR AND DETECTOR: ........................................................................................................ 44
FIGURE 25. PRBS MODE ............................................................................................................................................................. 44
8.2 LOOPBACKS: ................................................................................................................................................ 44
8.2.1 ANALOG LOOPBACK:............................................................................................................................................... 44
FIGURE 26. ANALOG LOOPBACK..................................................................................................................................................... 45
8.2.2 DIGITAL LOOPBACK:................................................................................................................................................ 45
FIGURE 27. DIGITAL LOOPBACK...................................................................................................................................................... 45
8.2.3 REMOTE LOOPBACK:............................................................................................................................................... 46
FIGURE 28. REMOTE LOOPBACK .................................................................................................................................................... 46
8.3 TRANSMIT ALL ONES (TAOS): .................................................................................................................... 46
FIGURE 29. TRANSMIT ALL ONES (TAOS)...................................................................................................................................... 46
ORDERING INFORMATION ............................................................................................................................. 47
PACKAGE DIMENSIONS ................................................................................................ 47
REVISION HISTORY ...................................................................................................................................... 48
II