S/UNI®-JET Data Sheet
Released
Figure 31 Receive Bipolar DS3 Stream
RCLK
LCV
RPOS
3 consec 0s
RNEG
The Receive Bipolar DS3 Stream diagram (Figure 31) shows the operation of the S/UNI-JET
while processing a B3ZS encoded DS3 stream on inputs RPOS and RNEG. It is assumed that the
first bipolar violation (on RNEG) illustrated corresponds to a valid B3ZS signature. A LCV is
declared upon detection of three consecutive zeros in the incoming stream, or upon detection of a
bipolar violation which is not part of a valid B3ZS signature.
Figure 32 Receive Unipolar DS3 Stream
RCLK
X1 BIT INFO 1
INFO 84
INFO 84 C BIT
INFO 1 INFO 2
OR F BIT
INFO 3
INFO 4 INFO 5
X2 BIT
RDATI
RLCV
LCV INDICATION
OR P OR M BIT
The Receive Unipolar DS3 Stream diagram (Figure 32) shows the complete DS3 receive signal
on the RDATI input. LCV indications, detected by an upstream B3ZS 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 33 Receive Bipolar E3 Stream
HDB3 Signature Pattern
X
0
0
V
RCLK
RPOS
B
0
0
V
LCV
4 consec 0s
RNEG
0
0
0
V
Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use
Document ID: PMC-1990267, Issue 3
296
PMC [ PMC-SIERRA, INC ]
