S/UNI®-JET Data Sheet
Released
The Receive Bipolar E3 Stream diagram (Figure 33) shows the operation of the S/UNI-JET while
processing an HDB3-encoded E3 stream on inputs RPOS and RNEG. It is assumed that the first
bipolar violation (on RNEG) illustrated corresponds to a valid HDB3 signature. A LCV is
declared upon detection of four consecutive zeros in the incoming stream, or upon detection of a
bipolar violation which is not part of a valid HDB3 signature.
Figure 34 Receive Unipolar E3 Stream
RCLK
FA1
FA1
INFO X
INFO N INFO N+1 INFO N+2 INFO N+3 INFO N+4 INFO N+5 INFO N+6
LCV INDICATION
INFO X+1
1
2
RDATI
RLCV
The Receive Unipolar E3 Stream diagram (Figure 34) shows the unipolar E3 receive signal on the
RDATI input. LCV indications, detected by an upstream HDB3 decoder, are indicated on input
RLCV. RLCV is sampled each bit period. The PMON LCV Event Counter is incremented each
time a logic one is sampled on RLCV.
Figure 35 Receive Bipolar J2 Stream
B8ZS signature
8zeros
0
0
0
V
1
0
V
1
V
0
0 0
0
0
0
0
0
1
0
0
0
0
0
RCLK
RPOS
EXZ
LCV
RNEG
The Receive Bipolar J2 Stream diagram (Figure 35) shows the operation of the S/UNI-JET while
processing a B8ZS-encoded J2 stream on inputs RPOS and RNEG. It is assumed that the first
bipolar violation (on RNEG) illustrated corresponds to a valid B8ZS signature. A LCV is declared
upon detection of a bipolar violation which is not part of a valid B8ZS signature. An excessive
zeros indication is given when 8 or more consecutive zeros are detected.
Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use
Document ID: PMC-1990267, Issue 3
297
PMC [ PMC-SIERRA, INC ]
