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CX28333 Dataheets PDF



Part Number CX28333
Manufacturers Conexant Systems
Logo Conexant Systems
Description (CX28331 - CX28333) Single/Dual/Triple E3/DS3/STS-1 Line Interface Unit
Datasheet CX28333 DatasheetCX28333 Datasheet (PDF)

Advance Information This document contains information on a product under development. The parametric information contains target parameters that are subject to change. CX28331/CX28332/CX28333 Single/Dual/Triple E3/DS3/STS-1 Line Interface Unit The CX28333 is a three-channel, E3/DS3/STS-1 fully-integrated Line Interface Unit (LIU). It is configured via external pins and does not need a microprocessor interface. Each channel has an independent equalizer on the receive side requiring no user conf.

  CX28333   CX28333


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Advance Information This document contains information on a product under development. The parametric information contains target parameters that are subject to change. CX28331/CX28332/CX28333 Single/Dual/Triple E3/DS3/STS-1 Line Interface Unit The CX28333 is a three-channel, E3/DS3/STS-1 fully-integrated Line Interface Unit (LIU). It is configured via external pins and does not need a microprocessor interface. Each channel has an independent equalizer on the receive side requiring no user configuration. Also, each channel has a programmable transmit pulse shaper that can be set to ensure that the cross-connect pulse mask requirement is met for transmit cable length up to 450 feet. The CX28332 is a dual-channel, and the CX28331 is a single-channel LIU with performance identical to the CX28333. The CX28333 gives the user new economies of scale in concentrator applications where three DS3 or STS-1 channels are concentrated into a single STS-3 channel. By including three independent transceivers on a chip, significant external components are eliminated, with the exception of 1:1 coupling transformers, termination resistors, and supply bypass capacitors. NOTE: Distinguishing Features • Can be used as a data transceiver over a maximum of 900 feet of Type 734/728 coaxial cable or equivalent in an on-premise environment Programmable pulse filtering to meet cross-connect pulse masks (ANSI T1.102-1993) Meets jitter specifications of Bellcore GR499, GR253, and TBR24 (with external JAT). Large input dynamic range Alarms for coding violation and loss of signal Full diagnostic loopback capability Uses a minimum of external components Compatible with ITU-T G.703, G.823 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 Superior input receiver sensitivity (< 25 mV) Transmit monitor inputs (CX2833i-3x series only) • • • • • • • • • In this document, "i" is used to represent the number of channels: i = 1 (CX28331), i = 2 (CX28332), and i = 3 (CX28333). Functional Block Diagram XOE LBO E3MODE PDB • • • TPOS TNEG TCLK TAIS PDATA/ NDATA ENCODER TCLK Pulse Shaper LINE DRIVER TLINEP TLINEM/N Physical Characteristics • • • • • • 80- and 100-pin ETQFP package Single 3.3 V power supply 1 W maximum power dissipation (CX28333) –40 °C to +85 °C temperature range 5 V-tolerant pins TTL digital pins ENDECDIS TX Monitor TMONP TMONM TXMON TMONTST REFCLK RLOOP LLOOP DATA MUX Applications RPOS RNEG RCLK RLOS DECODER PDATA Clock/ NDATA Data DATCLK Recovery P N Receiver RLINEP RLINEM/N ALOS REQH LIU #1 LIU #2 LIU #3 • • • • • • • Digital Cross-Connect Systems Routers ATM Switches Channelized Line Aggregation Units Test Equipment Channel Service Units Multiplexers NOTE(S): The TX Monitor is only used with the 100-pin CX2833i-3X. Data Sheet 100985A June 2, 2000 CX28333EVM TX B3ZS/HDB3 analog out NRZTX DATA and CLK in CH1 NRZRX DATA and CLK out F R A M E R S I D E CH1 RX B3ZS/HDB3 analog in TX B3ZS/HDB3 analog out NRZTX DATA and CLK in CH2 NRZRX DATA and CLK out L I N E S I D E CX28333 CH2 RX B3ZS/HDB3 analog in TX B3ZS/HDB3 analog out NRZTX DATA and CLK in CH3 NRZRX DATA and CLK out Loss of Signal Code Violation CH3 RX B3ZS/HDB3 analog in Clock Input Control 100985_002 © 2000, Conexant Systems, Inc. All Rights Reserved. Information in this document is provided in connection with Conexant Systems, Inc. (“Conexant”) products. These materials are provided by Conexant as a service to its customers and may be used for informational purposes only. Conexant assumes no responsibility for errors or omissions in these materials. Conexant may make changes to specifications and product descriptions at any time, without notice. Conexant makes no commitment to update the information and shall have no responsibility whatsoever for conflicts or incompatibilities arising from future changes to its specifications and product descriptions. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Conexant’s Terms and Conditions of Sale for such products, Conexant assumes no liability whatsoever. THESE MATERIALS ARE PROVIDED “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, RELATING TO SALE AND/OR USE OF CONEXANT PRODUCTS INCLUDING LIABILITY OR WARRANTIES RELATING TO FITNESS FOR A PARTICULAR PURPOSE, CONSEQUENTIAL OR INCIDENTAL DAMAGES, MERCHANTABILITY, OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT. CONEXANT FURTHER DOES NOT WARRANT THE ACCURACY OR COMPLETENESS OF THE INFORMATION, TEXT, GRAPHICS OR OTHER ITEMS CONTAINED WITHIN THESE MATERIALS. CONEXANT SHALL NOT BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING WITHOUT LIMITATION, LOST REVENUES OR LOST PROFITS, WHICH MAY RESULT FROM THE USE OF THESE MATERIALS. Conexant products are not intended for use in medical, life.


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