PM5364 pmc-sierra, PM5364 Datasheet - Page 133
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PM5364
Manufacturer Part Number
PM5364
Description
Tupp 2488 Assp Telecom Standard
Manufacturer
pmc-sierra
Datasheet
1.PM5364.pdf
(306 pages)
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10.9
Proprietary and Confidential to PMC-Sierra, Inc., and for its customers’ internal use.
Document No.: PMC-2011334, Issue 7
The SVCA aligns the synchronous payload of any legal mix of STS-1/3c/12c (VC-3/4/4c). The
STS (VC) payloads are independently floating inside the STS-12 (STM-4) transport frame. The
J1PIN is multiplexed among the independent payloads. The SVCA must align each one
independently. The output pointer justification events are multiplexed among all the output
streams.
The SVCA provides support for a VC4 virtual container carrying TUG-3 tributary data. On the
transmit side, when TUG-3 configuration bits are enabled, the SVCA removes VC-3 fixed stuff
columns (#30 and #59) and inserts VC-4 fixed stuff columns (#1, #2, #3, #4, #5, and #6). It also
indicates both the TU-3 and AU-4 trace (J1) bytes. The TU-3 pointer is generated by the SVCA
and the AU-4 pointer is a user provided fixed pointer.
External PAIS insertion port is provided to insert path alarm indication signal (AIS) in the
outgoing SONET/SDH stream on a per path basis. Also, internal events (FIFO overflow or
underflow) optionally cause path AIS insertion.
The SVCA provides an interrupt output to indicate any changes in the status of output pointer
justification and FIFO overflows or underflows. Each interrupt source is independently
maskable.
Data Paths in TUPP 2488
The TUPP 2488 can use one of four data paths to cater to different applications.
Hair-Pinning
•
ADM with Internal Crossbar
•
•
ADM with External Crossbar
•
Traffic from the line ingress is groomed through the internal Time:Space:Time fabric,
(ingress MSU-Lite->CCB->egress MSU-Lite) and is sent back out the line egress.
Traffic from the line ingress is routed to the ingress time switches (ingress MSU-Lites), and
then exits through either the system ingress via the internal crossbar (CCB), or through the
line egress via the internal crossbar and egress time stage (egress MSU-Lites). External time
stages (SBS type devices) on the system ingress interface are needed to complete the last
time stage of the Time:Space:Time fabric for system ingress traffic.
Traffic from the system egress is routed to the line egress via the internal crossbar and the
egress time stage switches. External time stages devices on the system egress interface
complete the first time stage of the Time:Space:Time fabric. Traffic from the system egress
can also be routed through the internal crossbar to the system ingress. External time stages
on the system egress interface complete the first time stage of the Time:Space:Time fabric.
Traffic from the line ingress is sent to the system ingress. The ingress time stage switches
are used but the internal crossbar is not used. An external crossbar and time stage switches
on the system ingress are needed to complete the Time:Space:Time fabric.
TUPP™ 2488 ASSP Telecom Standard Product Data Sheet
Released
133
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