PM5348 datasheet(49/238 Pages) PMC

49 / 238 page

PM5348 S/UNI-DUAL

DATA SHEET

PMC-950919

ISSUE 7

SATURN USER NETWORK INTERFACE

PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE

Figure 3

- STS-3c/STM-1Jitter Tolerance

Jitter Freq. (Hz)

0.1

100

1000

10000

100000

1000000

10000000

GR-253-CORE

Note that for frequencies below 300 Hz the jitter tolerance is greater than 15

UIpp; 15 UIpp is the maximum jitter tolerance of the test equipment. Also note

that the dip in the tolerance curve between 300 Hz and 10 kHz is due to the

S/UNI-DUAL's internal clock difference detector. If the recovered clock drifts

beyond 488 ppm of the reference, the PLL locks to the reference clock.

The typical jitter tolerance illustrated in Figure 3 is associated with the external

loop filter components illustrated in Figure 19.

9.2

Serial to Parallel Converter

The Serial to Parallel Converter (SIPO) converts the received bit serial SONET

stream to a byte serial stream. The SIPO searches for the SONET/SDH framing

pattern (A1, A2 ) in the incoming stream, and performs serial to parallel

conversion on octet boundaries.

9.3

Receive Section Overhead Processor

The Receive Section Overhead Processor (RSOP) provides frame

synchronization, descrambling, section level alarm and performance monitoring.

PM5348 Datasheet(PDF) 49 Page - PMC-Sierra, Inc