PMC-920520 (R8)
1998 PMC-Sierra, Inc. September, 1998
PM5371
PMC-Sierra,Inc.
VT/TU Cross-Connect Switch
TUDX
FEATURES
• 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.
• Permits switching of any combination
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.
• Provides control outputs that are
programmable on a per-timeslot basis
to facilitate construction of larger
switching arrays.
• Provides a generic 8-bit
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.
APPLICATIONS
• SONET/SDH Broadband Cross-
Connects
• SONET/SDH Add/Drop Multiplexers
• SONET/SDH Terminal Multiplexers
• SONET/SDH Test Equipment
BLOCK DIAGRAM
Input Bus
Formatter
Microprocessor
Interface
MBEB
RSTB
CS1B
RDB
WRB
ALE
A[4:0]
D[7:0]
SOUTB[8:0]
INTB
CS2B
OFP
IFP
OFSEB
SFP
SOBEB
PAGE
SCLK
DINB[8:0]
DINT[8:0]
SOUTT[8:0]
Output Bus Formatter
Switching
Element
Time
Switch
S
INR
[8:0
]
SI
NL
[8
:0
]
A
O
U
T
L[8
:0]
DOUT
L
[8
:0
]
COU
T
L
AO
BEB
OD
E
B
AO
U
T
R[
8
:0
]
DOU
T
R[8
:0
]
CO
UT
R
Time
Switch
Switching
Element
Time
Switch
Time
Switch
