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Preliminary Data Sheet

April 2001

TMUX03155 STS-3/STM-1 (AU-4) Multiplexer/Demultiplexer

Features

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Applications

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Multiplexes three STS-1 signals into a SONET

STS-3 signal.

Multiplexes three AU-3 signals into an SDH STM-1

(AU-4) signal via a TUG-3 construction.

Demultiplexes three STS-1 signals from a SONET

STS-3 signal.

Demultiplexes three AU-3 signals from an SDH

STM-1 (AU-4) signal via a TUG-3 deconstruction.

High-speed microprocessor interface configurable

to operate with most commercial microprocessors.

Detects STS-3/STM-1 (AU-4) loss-of-signal (LOS)

conditions.

Detects STS-3/STM-1 (AU-4) out-of-frame and

loss-of-frame (OOF/LOF) conditions.

Provides an 8-bit bus interface at the STS-1/AU-3

rate.

Provides a bit serial, nibble-wide, or byte-wide

interface at STS-3/STM-1 (AU-4) rate.

Provides STS-3/STM-1 (AU-4) selectable scram-

bler/descrambler functions and B1/B2/B3 genera-

tion/detection.

Accepts bit rate, nibble rate, or byte rate high-

speed clocks (155.52 MHz, 38.88 MHz, or

19.44 MHz, respectively).

STS-3/STM-1 (AU-4) internal clock and data

recovery. Meets type B jitter tolerance of ITU-T

G.958. Accommodates 0.5 UI jitter up to 20 MHz.

155.52 MHz input reference clock for on-chip PLL.

Has on-chip PLL for clock synthesis, requiring only

one external resistor. No output clock drift in

absence of data transitions once lock is acquired.

STS-1 termination mode.

鈥?0 擄C to +85 擄C temperature range.

208-pin, shrink quad flat pack (SQFP) package.

Complies with GR-253-CORE (12/95), G.707

(3/96), G.783(1/94).

SONET/SDH line termination equipment.

SDH path origination and termination equipment.

SONET/SDH add/drop multiplexers.

SONET/SDH cross connects.

SONET/SDH test equipment.

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Description

The TMUX03155 STS-3/STM-1 (AU-4) multiplexer

device provides three modes of operation: STS-3,

STM-1 (AU-4), and STS-1 modes. In STS-3 mode,

the TMUX03155 device provides all of the functions

necessary to multiplex and demultiplex up to three

STS-1 signals to/from a SONET STS-3 signal. In

AU-4 mode, the TMUX03155 provides the functional-

ity to multiplex and demultiplex up to three AU-3 sig-

nals to/from an STM-1 (AU-4) signal. In STS-1 mode,

the high-speed side of the TMUX03155 operates at

51.84 MHz and can be used for STS-1 termination

and for accessing transport overhead in the SONET

frame. On the STS-3/STM-1 (AU-4) side, the device

can be configured for either a 1-bit serial data inter-

face, a 4-bit parallel (nibble-wide) data interface, or

an 8-bit parallel (byte-wide) data interface. This

allows the device to drive an OC3 optical signal

directly or to allow for modular growth in terminal or

add/drop applications. On the STS-1/AU-3 side, the

TMUX03155 device provides a bus mode that can

communicate with up to three STS-1/AU-3 devices at

19.44 Mbits/s. The TMUX03155 is designed to inter-

face with the Agere Systems Inc. TMPR28051

device, or equivalent, providing complete mapping/

unmapping from/to an STS-3/STM-1 (AU-4) signal

for up to 84 DS1 or 63 E1 signals.

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  TMUX03155 STS-3/STM-1 (AU-4) Multiplexer/Demultiplexer
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