|Category||Communication => Network => SONET/SDH/ATM/DS3/PHYs/E3 (T3/E3) => Framers/Mappers/PHYs|
|Datasheet||Download M28332 datasheet
Revision A Level Date June 2001 February 2003 Initial release - Updated LBO to 450 feet. - Incorporated Errata 500377A. - Added loopback diagrams. - Removed EVM, IBIS, and JAT Appendices. - Fixed description of transmit AIS during loopback operations. - Renumbered document [28333-DSH-003-A]. - Updated PCB design considerations. - Added power sequencing information. - General corrections. Description
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The is a three-channel, DS3/E3/STS-1, fully integrated Line Interface Unit Distinguishing Features (LIU) device. It is configured via external pins and does not require a microprocessor Programmable pulse shaper to meet interface. Each channel has an independent receive equalizer requiring no user cross-connect pulse masks (ANSI T1.1021993) configuration. Additionally, each channel has a programmable transmit pulse shaper Meets jitter tolerance and jitter generation that can be set to ensure that the transmit pulse meets the pulse mask requirement specifications of Bellcore GR499, GR253, for the digital cross-connect. The is a dual-channel, and the is a and ETSI TBR24 single-channel LIU with performance identical to the M28333.
The M28333 gives the user new economies of scale in concentrator applications where three or STS-1 channels are concentrated into a single STS-3 channel. a capacitor. The Transmit Line Driver Monitor checks for a faulty transmitter or shorted output.Each line interface is reduced to 1:1 coupling transformers, terminating resistors, and
XOE LBO E3MODE PDB TPOS TNEG TCLK TAIS PDATA/ NDATA ENCODER TCLK TX Monitor TMONP TMONM TXMON TMONTST REFCLK PDATA Clock/ NDATA Data DATCLK Recovery RLOSMAX RLOSTHR RLOSMDIS P N Receiver RLINEP RLINEM/N REQH Channel 1 Channel 2 Channel 3In this document, "i" is used to represent the number of channels: 2 (M28332), and 3 (M28333).
Alarms for coding violation and loss of signal Full diagnostic loopback capability Uses a minimum of external components Compliant with ITU-T G.703 and ETSI TBR24 Independent power down mode per channel Easily interfaced to the DS3/E3 Framer IC (CX28342/3/4/6/8 and CN8330) Selectable B3ZS/HDB3 encoding/ decoding Transmit monitor inputs Programmable RLOS thresholdPulse Shaper LINE DRIVER TLINEP TLINEM/N
100-pin ETQFP package Single 3.3 V power supply 1 W maximum power dissipation +85 °C temperature range 5 V-tolerant pins TTL digital pinsApplications
Digital Cross-Connect Systems Routers ATM Switches Channelized Line Aggregation Units Test Equipment Channel Service Units Multiplexers
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