TMUX03155

Features:

 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.
 –40 °C to +85 °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).

Application

SONET/SDH line termination equipment.
SDH path origination and termination equipment.
SONET/SDH add/drop multiplexers.
SONET/SDH cross connects.
SONET/SDH test equipment.

Specifications

Parameter	Symbol	Min	Max	Unit
dc Supply Voltage Range	VDD	-0.5	4.6	V
Power Dissipation	PD	-	-	mW
Storage Temperature Range	TSTG	-65	125	°C
Ambient Operating Temperature Range	TA	-40	85	°C
Maximum Voltage (digital input pins) with Respect to REF5VTOL	-	-	0.3	V
Minimum Voltage (digital input pins) with Respect to VSS	-	-0.3	-	V

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.