S/UNI®-JET Data Sheet
Released
Figure 39 Receive G.832 E3 Overhead
G.832 Frame Period
ROHFP
ROHCLK
ROH
FA1 FA2 EM TR
MA
NR
GC
FA1FA2
54 cycles
ROHFP
ROHCLK
ROH
bit
2
bit
5
bit
bit
2
bit
bit
7
bit
1
bit
4
bit
6
bit
1
bit
1
bit bit
bit
6
bit bit
bit
3
bit bit
bit
8
bit bit
bit
5
bit bit
bit
2
7
4
3
4
8
1
5
6
2
3
7
8
FA1 byte
FA2 byte
EM byte
The Receive G.832 E3 Overhead diagram (Figure 39) shows the extraction of the G.832 E3
overhead bits on the ROH output, along with overhead clock (ROHCLK), and frame position
indicator (ROHFP).
Figure 40 Receive G.751 E3 Overhead
G.751 Frame Period
...
...
...
ROHFP
ROHCLK
RAI Nat C11C21 C31 C41 C12 C22 C32 C42 C13 C23 C33 C43 J1 J2 J3 J4
RAI
ROH
30 cycles
Justification service bits and tributary justification bits
output if PYLD&JUST bit equals 0
The Receive G.751 E3 Overhead diagram (Figure 40) shows the extraction of the G.751 E3
overhead bits on the ROH output, along with overhead clock (ROHCLK), and frame position
indicator (ROHFP). The justification indication bits (C ) along with the justification opportunity
jk
bits (J -J ) are extracted when they are treated as overhead (PYLD&JUST bit in the E3 FRMR
1 4
Maintenance Options register set to logic zero).
Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use
Document ID: PMC-1990267, Issue 3
300
PMC [ PMC-SIERRA, INC ]
