S/UNI®-JET Data Sheet
Released
Figure 41 Receive J2 Overhead
F-bits
1
TS1
X
TS97
TS98
3
RCLK
ROH
0
m
0
1
2
3
4
5
6
7
0
1
2
4
5
6
7
0
1
X
Frame 1
ROHFP
Frames 2, 3, 4
ROHCLK
The Receive J2 Overhead diagram (Figure 41) shows the extraction of the J2 overhead bits on the
ROH output, along with overhead clock (ROHCLK), and frame position indicator (ROHFP).
ROHCLK is a gapped clock with a maximum instantaneous rate equal to the RCLK frequency.
ROHFP pulses on the first bit of TS97 in the first frame of each J2 multiframe.
Figure 42 Receive PLCP Overhead
RPOHFP
F1
B1
G1
M2
M1
Z2
Z1
octe t
octe t
octe t
octe t
octe t
octe t
octe t
RPOHCLK
RPOHCLK
RPOH
B
8
B
1
B B
B
B B
B
B
8
B
2
B
3
B
4
B
5
B
6
B
7
B
8
B
B
1
2
3
4
5
6
7
1
F1 Octet
B1 Octet
RPOHFP
Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use
Document ID: PMC-1990267, Issue 3
301
PMC [ PMC-SIERRA, INC ]
