PM5361-RI PMC-Sierra, Inc., PM5361-RI Datasheet - Page 84

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

DATA SHEET
PMC-920526
(ITMFH4=1)
DIN[7:0]
SCLK
IC1J1
pulses high while ISPE is set low to mark the position of the single C1 byte in the
STM-1 transport envelope. The ITMF signal is selectable to mark the V1 byte of
the first tributary, or the H4 byte in the last (fourth) frame of a tributary multiframe.
In this diagram, ITMF is shown to be marking the final H4 byte of the tributary
multiframe. The IC1J1 signal pulses high to mark the single J1 byte of the VC4.
This diagram applies when the TUPP is in AU4 mode, regardless of whether
individual tributary payload processors are configured for TUG3 or TU3 mode.
Figure 11
The timing of the TUPP output bus is illustrated in Figure 12. This diagram
shows the relationships of the output signals in locked STS-1 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 C1 byte of the
first STS-1 stream in every frame of the STS-3 transport envelope. In locked
STS-1 mode, the position of the J1 bytes and the STS-1 SPEs is implicitly
defined by the C1 byte position. All three STS-1 SPEs are defined to be aligned
to the STS-3 transport envelope such that the J1 bytes immediately follow the C1
bytes and no STS-1 pointer justification events are possible. The OTMF input
marks the frame containing V1 bytes. It is sampled only at the first V1 byte
position of the first STS-1 stream. The bytes forming the various tributary
synchronous payload envelopes are identified by the OTSPE signal being set
high. The OTV5 signal pulses high to mark the V5 bytes of each outgoing
tributary.
ISPE
ITMF
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
A1
- Input Bus Timing - AU4 Case
A1 A1 A2 A2 A2 C1
ISSUE 8
X X
H4
Negative stuff for VC4 which
happens to carry the J1 byte
••••
H1
H1 H1 H2 H2 H2
TRIBUTARY UNIT PAYLOAD PROCESSOR
76
PM5361 TUPP