PM5371
TUDX
PMC-Sierra,Inc.
VT/TU Cross-Connect Switch
• Permits switching of any combination
• Provides a generic 8-bit
FEATURES
of SONET VT1.5, VT2, VT3, VT6, or
STS-1 channels. Permits switching of
any combination of SDH TU11, TU12,
TU2, or TU3 channels.
• Operates in conjunction with the
PM5362 TUPP-PLUS VT/TU Payload
Processor/Performance Monitor, which
aligns SONET VTs or SDH TUs so
they can be switched by the TUDX.
• Cascadable in a systolic or bussed
manner to allow larger switching arrays
to be implemented.
microprocessor bus interface for
configuration, control, and status
monitoring.
• Low power, +5 V, CMOS technology.
Device has TTL-compatible inputs and
outputs.
• Available in a 160-pin Plastic Quad
Flat Pack (PQFP) (28 by 28 mm)
package.
• Monolithic, SONET/SDH, single-stage,
non-blocking array of time switches for
cross-connecting SONET Virtual
Tributaries (VTs) or SDH Tributary
UNITs (TUs).
• Provides non-blocking switching
between two STS-3 (STM-1) byte-
serial input streams and two STS-3
(STM-1) byte-serial output streams.
• Operates from a single 19.44 MHz
clock.
• Provides parity checking on input data
busses and parity generation on output
data busses.
• Allows programmable idle code
insertion on a per-VT or per-TU basis.
APPLICATIONS
• SONET/SDH Broadband Cross-
Connects
• SONET/SDH Add/Drop Multiplexers
• SONET/SDH Terminal Multiplexers
• SONET/SDH Test Equipment
• Provides control outputs that are
programmable on a per-timeslot basis
to facilitate construction of larger
switching arrays.
BLOCK DIAGRAM
SOUTT[8:0]
Switching
Element
Switching
Element
Time
Switch
Time
Switch
Input Bus
Formatter
DINT[8:0]
DINB[8:0]
SCLK
Time
Switch
Time
Switch
PAGE
SOBEB
SFP
SOUTB[8:0]
OFSEB
IFP
OFP
MBEB
RSTB
CS1B
CS2B
RDB
Microprocessor
Interface
WRB
ALE
Output Bus Formatter
A[4:0]
D[7:0]
INTB
PMC-920520 (R8)
1998 PMC-Sierra, Inc. September, 1998
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