PM5361-RI PMC-Sierra, Inc., PM5361-RI Datasheet - Page 86

• Manufacturer Part Number: PM5361-RI
• Description: SONET/SDH TRIBUTARY UNIT PAYLOAD PROCESSOR
• Manufacturer: PMC-Sierra, Inc.

DATA SHEET
PMC-920526
(OTMFH4=1)
(OJ1EN=1)
DOUT[7:0]
changing for two of the STS-1 SPEs (STS-1 #2 and #3) due to the pointer
justification events shown.
The same diagram applies for AU3 mode as it is equivalent to STS-1 mode,
except for nomenclature.
Figure 13
The timing of the TUPP output signals in locked and floating AU4 modes is
illustrated in Figure 14 and Figure 15, respectively. The operation of the various
signals is analogous to the locked and floating STS-1 modes, except that there is
only a single J1 byte and all pointer justification events must involve a group of
three stuff bytes. These diagrams apply when the TUPP is in AU4 mode,
regardless of whether individual tributary payload processors are configured for
TUG3 or TU3 mode.
Figure 14 shows the case of the TUPP operating in locked AU4 mode. Data on
DOUT[7:0] is updated on the rising edge of SCLK, and the OSPE input must be
logic 0. The OC1J1 signal pulses high to mark the position of the single C1 byte
in every frame of the AU4 transport envelope. In locked AU4 mode, the position
of the single J1 byte and the VC4 is implicitly defined by the C1 byte position.
OTSPE
OC1J1
OTMF
OSPE
SCLK
OTV5
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
STS-1 #1 SPE J1 byte
A1
- Output Bus Timing - Floating STS-1 SPEs / AU3 VCs Case
A1 A1 A2 A2 A2 C1 C1 C1
Last H4 byte in
tributary multiframe
Any V1 - V4 byte
TU#1, STS-1 #1
ISSUE 8
J1
C2
H4 Vx
Negative stuff for STS-1 #2
SPE which happens to
carry a non-final H4 byte
••••
Positive stuff for STS-1 #3 SPE
H1
V5 byte as marked by OTV5
H1 H1 H2 H2 H2 H3
TRIBUTARY UNIT PAYLOAD PROCESSOR
H4
H3
78
PM5361 TUPP
V5