XRT91L80 View Datasheet(PDF) - Exar Corporation
Part Name
Description
MFG CO.
'XRT91L80' PDF : 45 Pages View PDF
xr
REV. P1.1.0
PRELIMINARY
XRT91L80
2.488/2.666 GBPS STS-48/STM-16 SONET/SDH TRANSCEIVER
FIGURE 20. 91L80 MEASURED JITTER TOLERANCE WITH EXTERNAL JITTER ATTENUATION ENABLED IN LOOPTIMING
AT 2.488 GBPS IN STS-48.
4.4.2 Jitter Transfer
Jitter transfer is defined as the ratio of the jitter on the output of STS-N to the jitter applied on the input of
STS-N versus frequency. Jitter transfer is important in applications where the system is utilized in the loop-
timed mode, where the recovered clock is used as the source of the transmit clock.
FIGURE 21. 91L80 MEASURED JITTER TRANSFER WITH EXTERNAL JITTER ATTENUATION ENABLED IN LOOPTIMING AT
2.488 GBPS IN STS-48.
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