XRT75R03D_06 Datasheet, PDF (7/135 Pages) Exar Corporation – EXAR DATA SHEET FORMAT TEMPLATES

XRT75R03D
REV. 1.0.4
THREE CHANNEL E3/DS3/STS-1 LINE
10.6 A REVIEW OF THE DS3 WANDER REQUIREMENTS PER ANSI T1.105.03B-1997. ............................. 118
10.7 A REVIEW OF THE INTRINSIC JITTER AND WANDER CAPABILITIES OF THE XRT75R03D IN A TYPICAL
SYSTEM APPLICATION .............................................................................................................................. 118
10.7.1 INTRINSIC JITTER TEST RESULTS...................................................................................................................... 118
TABLE 32: SUMMARY OF "CATEGORY I INTRINSIC JITTER TEST RESULTS" FOR SONET/DS3 APPLICATIONS................................... 118
10.7.2 WANDER MEASUREMENT TEST RESULTS........................................................................................................ 120
10.8 DESIGNING WITH THE XRT75R03D ......................................................................................................... 120
10.8.1 HOW TO DESIGN AND CONFIGURE THE XRT75R03D TO PERMIT A SYSTEM TO MEET THE ABOVE-MENTIONED
INTRINSIC JITTER AND WANDER REQUIREMENTS .............................................................................................. 120
FIGURE 58. ILLUSTRATION OF THE XRT75R03D BEING CONNECTED TO A MAPPER IC FOR SONET DE-SYNC APPLICATIONS ......... 120
CHANNEL CONTROL REGISTER - CHANNEL 0 ADDRESS LOCATION = 0X06................................................... 121
CHANNEL 1 ADDRESS LOCATION = 0X0E........................................... 121
CHANNEL 2 ADDRESS LOCATION = 0X16 ........................................... 121
CHANNEL CONTROL REGISTER - CHANNEL 0 ADDRESS LOCATION = 0X06................................................... 122
CHANNEL 1 ADDRESS LOCATION = 0X0E................................................ 122
CHANNEL 2 ADDRESS LOCATION = 0X16 ................................................. 122
JITTER ATTENUATOR CONTROL REGISTER - (CHANNEL 0 ADDRESS LOCATION = 0X07................................. 122
CHANNEL 1 ADDRESS LOCATION = 0X0F.................................... 122
CHANNEL 2 ADDRESS LOCATION = 0X17 .................................... 122
JITTER ATTENUATOR CONTROL REGISTER - CHANNEL 0 ADDRESS LOCATION = 0X07.................................. 123
CHANNEL 1 ADDRESS LOCATION = 0X0F.............................. 123
CHANNEL 2 ADDRESS LOCATION = 0X17 .............................. 123
JITTER ATTENUATOR CONTROL REGISTER - CHANNEL 0 ADDRESS LOCATION = 0X07.................................. 123
CHANNEL 1 ADDRESS LOCATION = 0X0F............................. 123
CHANNEL 2 ADDRESS LOCATION = 0X17 ............................. 123
10.8.2 RECOMMENDATIONS ON PRE-PROCESSING THE GAPPED CLOCKS (FROM THE MAPPER/ASIC DEVICE) PRI-
OR TO ROUTING THIS DS3 CLOCK AND DATA-SIGNALS TO THE TRANSMIT INPUTS OF THE XRT75R03D . 123
FIGURE 59. ILLUSTRATION OF MINOR PATTERN P1 .................................................................................................................. 124
FIGURE 60. ILLUSTRATION OF MINOR PATTERN P2 .................................................................................................................. 125
FIGURE 61. ILLUSTRATION OF PROCEDURE WHICH IS USED TO SYNTHESIZE MAJOR PATTERN A ................................................ 125
FIGURE 62. ILLUSTRATION OF MINOR PATTERN P3 .................................................................................................................. 126
FIGURE 63. ILLUSTRATION OF PROCEDURE WHICH IS USED TO SYNTHESIZE PATTERN B............................................................. 126
FIGURE 64. ILLUSTRATION OF THE SUPER PATTERN WHICH IS OUTPUT VIA THE "OC-N TO DS3" MAPPER IC ............................. 127
FIGURE 65. SIMPLE ILLUSTRATION OF THE XRT75R03D BEING USED IN A SONET DE-SYNCHRONIZER" APPLICATION ................... 127
10.8.3 HOW DOES THE XRT75R03D PERMIT THE USER TO COMPLY WITH THE SONET APS RECOVERY TIME RE-
QUIREMENTS OF 50MS (PER TELCORDIA GR-253-CORE)? ................................................................................. 127
TABLE 33: MEASURED APS RECOVERY TIME AS A FUNCTION OF DS3 PPM OFFSET ....................................................................... 128
JITTER ATTENUATOR CONTROL REGISTER - CHANNEL 0 ADDRESS LOCATION = 0X07.................................. 129
CHANNEL 1 ADDRESS LOCATION = 0X0F............................. 129
CHANNEL 2 ADDRESS LOCATION = 0X17 ............................. 129
10.8.4 HOW SHOULD ONE CONFIGURE THE XRT75R03D, IF ONE NEEDS TO SUPPORT "DAISY-CHAIN" TESTING AT
THE END CUSTOMER'S SITE? .................................................................................................................................. 129
JITTER ATTENUATOR CONTROL REGISTER - CHANNEL 0 ADDRESS LOCATION = 0X07.................................. 129
CHANNEL 1 ADDRESS LOCATION = 0X0F.................................... 129
CHANNEL 2 ADDRESS LOCATION = 0X17 .................................... 129
ORDERING INFORMATION ................................................................................................................ 130
PACKAGE DIMENSIONS - 14X20 MM, 128 PIN PACKAGE ............................................................................... 130
REVISIONS................................................................................................................................................. 131
IV