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PM7347 Datasheet(PDF) 266 Page - PMC-Sierra, Inc

Part # PM7347
Description  SATURN USER NETWORK INTERFACE for J2/E3/T3
PDF  341 Pages
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Manufacturer  PMC [PMC-Sierra, Inc]
Direct Link  http://www.pmc-sierra.com
Logo PMC - PMC-Sierra, Inc

PM7347 Datasheet(HTML) 266 Page - PMC-Sierra, Inc

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S/UNI®-JET Data Sheet
Released
Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use
266
Document ID: PMC-1990267, Issue 3
Overhead Field
Transmit Operation
Receive Operation
timing reference from REF8KI, a
looptimed 8 kHz reference, or fixed
stuffing via the FIXSTUFF bit in
the SPLT Configuration Register.
See Table 36.
For the G.751 E3 PLCP format,
this octet indicates the number of
stuff octets (17 to 21) at the end of
the PLCP frame. Depending on
the alignment of the G.751 E3
frame to the E3 PLCP frame, 18,
19 or 20 octets are nominally
stuffed.
The stuffing may be varied by ±1
octet so that the PLCP frame rate
can be locked to an external 8 kHz
timing reference from REF8KI. The
S/UNI-JET also supports fixed
timing using the FIXSTUFF bit in
the SPLT Configuration Register.
See Table 37.
Table 35 PLCP Path Overhead Identifier Codes
POI
POI Code (Hex)
P11
2C
P10
29
P9
25
P8
20
P7
1C
P6
19
P5
15
P4
10
P3
0D
P2
08
P1
04
P0
01
Table 36 DS3 PLCP Trailer Length
C1(Hex)
Frame/Trailer Length
FF
1 (13 Nibbles)
00
2 (14 Nibbles)
66
3 (13 Nibbles)
99
3 (14 Nibbles)



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