PM5371TUDX
DATA SHEET
PMC-920525
ISSUE 6
SONET/SDH TRIBUTARY UNIT CROSS CONNECT
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DESCRIPTION
The PM5371 TUDX SONET/SDH Tributary Unit Cross-Connect is a monolithic
integrated circuit that allows non-blocking switching of tributaries within two
SONET STS-3 or SDH STM-1 streams. Any tributary entering on either stream
can be connected to any same size tributary within either outgoing stream. The
TUDX can be programmed to cross-connect a mix of SONET VT1.5, VT2, VT3,
VT6, or STS-1 channels or SDH TU11, TU12, TU2, or TU3 channels.
Programmable idle code can also be inserted into any of these channels. The
TUDX allows cross-connection of up to 168 VT1.5 or TU11 streams, up to 126
VT2 or TU12 streams, or up to 42 VT6 or TU2 streams or any legal mix as
permitted by the SONET or SDH mappings.
The TUDX operates in conjunction with the PM5361 TUPP SONET/SDH
Tributary Unit Payload Processor which aligns SONET VTs or SDH TUs such that
they can be switched by the TUDX. Larger switches can be constructed using
arrays of TUDX devices. The TUDX is cascadable in a systolic or bused manner
and provides programmable control outputs that are useful in constructing larger
switching arrays.
No high speed clocks are required as the TUDX operates from a single 19.44
MHz clock. Parity checking is provided on input data buses and parity generation
is provided on output data buses. The TUDX is configured, controlled and
monitored via a generic 8-bit microprocessor bus interface.
The TUDX is implemented in low power, +5 Volt, CMOS technology. It has TTL
compatible inputs and outputs and is packaged in a 160 pin metric quad flat pack
(MQFP) package.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
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PMC [ PMC-SIERRA, INC ]
