PM7346 Datasheet, PDF (325/419 Pages) PMC-Sierra, Inc – SATURN QUAD USER NETWORK INTERFACE FOR J2, E3, T3

DATASHEET
PMC-960835
ISSUE 6
PM7346 S/UNI-QJET
SATURN QUAD USER NETWORK INTERFACE FOR J2, E3, T3
Figure 13 - DS1 PLCP Frame Format
A1 A2 P9 Z4
A1 A2 P8 Z3
A1 A2 P7 Z2
A1 A2 P6 Z1
A1 A2 P5 F1
A1 A2 P4 B1
A1 A2 P3 G1
A1 A2 P2 M2
A1 A2 P1 M1
A1 A2 P0 C1
Fram ing
POH
(3 octets)
ATM Cell
ATM Cell
ATM Cell
ATM Cell
ATM Cell
ATM Cell
ATM Cell
ATM Cell
ATM Cell
ATM Cell
53 octets
PLCP
Fram e Rate
3 ms
T raile r
6 octets
The DS1 PLCP frame provides the transmission of 10 ATM cells every 3 ms. The
PLCP frame is octet aligned to the framing bit in the DS1 frame; there is no
relationship between the start of the PLCP frame, and the start of the DS1 frame.
A trailer is inserted at the end of each PLCP frame. The number of octets
inserted is always six, and cannot be varied.
Figure 14 - G.751 E3 PLCP Frame Format
A1 A2 P8 Z3
A1 A2 P7 Z2
A1 A2 P6 Z1
A1 A2 P5 F1
A1 A2 P4 B1
A1 A2 P3 G1
A1 A2 P2 M2
A1 A2 P1 M1
A1 A2 P0 C1
Fram ing
POH
(3 octets)
ATM Cell
ATM Cell
ATM Cell
ATM Cell
ATM Cell
ATM Cell
ATM Cell
ATM Cell
ATM Cell
53 octets
PLCP
Fram e Rate
125 µs
T raile r
1 7 ,1 8 ,1 9 ,2 0 , o r 2 1
octets
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