XRT91L30 データシートの表示（PDF） - Exar Corporation

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XRT91L30

STS-12/STM-4 OR STS-3/STM-1 SONET/SDH TRANSCEIVER

Exar Corporation 

xr

STS-12/STM-4 OR STS-3/STM-1 SONET/SDH TRANSCEIVER

XRT91L30

REV. 1.0.1

3.5 TRANSMIT PARALLEL INPUT TO SERIAL OUTPUT (PISO) ...................................................................... 24

FIGURE 15. SIMPLIFIED BLOCK DIAGRAM OF PISO ......................................................................................................................... 24

3.6 CLOCK MULTIPLIER UNIT (CMU) AND RE-TIMER ..................................................................................... 25

TABLE 14: CLOCK MULTIPLIER UNIT PERFORMANCE ....................................................................................................................... 25

3.7 LOOP TIMING AND CLOCK CONTROL ....................................................................................................... 25

TABLE 15: LOOP TIMING AND CLOCK RECOVERY CONFIGURATIONS ................................................................................................. 26

FIGURE 16. LOOP TIMING MODE USING INTERNAL CDR OR AN EXTERNAL RECOVERED CLOCK ....................................................... 26

3.8 TRANSMIT SERIAL OUTPUT CONTROL ..................................................................................................... 27

FIGURE 17. TRANSMIT SERIAL OUTPUT INTERFACE BLOCK .............................................................................................................. 27

4.0 DIAGNOSTIC FEATURES ................................................................................................................... 28

4.1 SERIAL REMOTE LOOPBACK ..................................................................................................................... 28

FIGURE 18. SERIAL REMOTE LOOPBACK......................................................................................................................................... 28

4.2 DIGITAL LOCAL LOOPBACK ....................................................................................................................... 28

FIGURE 19. DIGITAL LOCAL LOOPBACK........................................................................................................................................... 28

4.3 ANALOG LOCAL LOOPBACK ...................................................................................................................... 29

FIGURE 20. ANALOG LOCAL LOOPBACK .......................................................................................................................................... 29

4.4 SPLIT LOOPBACK ......................................................................................................................................... 29

FIGURE 21. SPLIT LOOPBACK......................................................................................................................................................... 29

4.5 EYE DIAGRAM ............................................................................................................................................... 30

FIGURE 22. TRANSMIT ELECTRICAL OUTPUT EYE DIAGRAM............................................................................................................. 30

4.6 SONET JITTER REQUIREMENTS ................................................................................................................. 30

4.6.1 JITTER TOLERANCE: ................................................................................................................................................ 30

FIGURE 23. GR-253 JITTER TOLERANCE MASK .............................................................................................................................. 31

TABLE 16: XRT91L30 RECEIVER JITTER TOLERANCE PERFORMANCE............................................................................................. 31

FIGURE 24. XRT91L30 MEASURED JITTER TOLERANCE WITH 77.76MHZ REFERENCE CLOCK ......................................................... 31

FIGURE 25. XRT91L30 MEASURED JITTER TOLERANCE WITH 19.44MHZ REFERENCE CLOCK ......................................................... 32

4.6.2 JITTER GENERATION................................................................................................................................................ 32

TABLE 17: XRT91L30 OPTICAL JITTER GENERATION USING 223-1 PRBS PATTERN ........................................................................ 32

TABLE 18: XRT91L30 OPTICAL JITTER GENERATION USING 223-1 PRBS PATTERN USING NON-STANDARD FILTERS........................ 32

5.0 ELECTRICAL CHARACTERISTICS ................................................................................................... 33

ABSOLUTE MAXIMUM RATINGS .................................................................................................................. 33

ABSOLUTE MAXIMUM POWER AND INPUT/OUTPUT RATINGS ......................................................... 33

POWER AND CURRENT DC ELECTRICAL CHARACTERISTICS.................................................................... 33

................................................................................................................................................................... 33

LVPECL AND LVTTL LOGIC SIGNAL DC ELECTRICAL CHARACTERISTICS...................................... 34

ORDERING INFORMATION .................................................................................................................. 35

PACKAGE DIMENSIONS ................................................................................................ 35

REVISION HISTORY ...................................................................................................................................... 36

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