LXT6234QE Intel Corporation, LXT6234QE Datasheet
LXT6234QE
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LXT6234QE Summary of contents
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LXT6234 E-Rate Multiplexer The LXT6234 E-Rate Multiplexer is a single-chip solution for multiplexing four tributary channels into a single high speed data stream and for demultiplexing a high speed data stream back to four tributary channels. All of the necessary ...
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... Copies of documents which have an ordering number and are referenced in this document, or other Intel literature may be obtained by calling 1-800-548-4725 or by visiting Intel’s website at http://www.intel.com. Copyright © Intel Corporation, 2001 *Third-party brands and names are the property of their respective owners. ® ...
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Contents 1.0 Block Diagram 2.0 Conscription ................................................................................................................. 6 3.0 Functional Description 3.1 Frame Format......................................................................................................11 3.2 HDB3 Codecs......................................................................................................11 3.3 HDB3 Decoder Alarms ........................................................................................12 3.4 Multiplexer ...........................................................................................................12 3.4.1 Flag Bits .................................................................................................13 3.4.2 Multiplexer Alarms ..................................................................................14 3.5 Demultiplexer ......................................................................................................14 3.5.1 Demultiplexer Alarms .............................................................................14 ...
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LXT6234 — E-Rate Multiplexer Tables 1 Input Signals ......................................................................................................... 7 2 Output Signals....................................................................................................... 9 3 Absolute Ratings ................................................................................................. Characteristics (TA=-40 to +85×C, Vdd=+5V±5%, GND=0 V)...................... 19 5 HDB3 Encoder and Decoder (Refer to 6 Multiplexer Tributary Input ...
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Block Diagram Figure 1. Block Diagram High Speed NRZ Data Input HDB3 Data Input 4 Tributary NRZ Data Inputs 4 HDB3 Pos/Neg Data Input Pairs 4 NRZ Data Inputs Service Channels / Ref Clock High Speed Multiplexer Clock NRZ ...
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... LXT6234 is the unique identifier for this product family. QE indicates the family member. Rev # Identifies the particular silicon “stepping” — refer to the specification update for additional stepping information. Lot # Identifies the batch. FPO # Identifies the Finish Process Order. 6 LXT6234QE XX XXXXXXXXXXXXXX XXXXXXXXX Definition 50 DHHDB3C 49 ...
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Table 1. Input Signals Pin # Sym HDB3 Decoder #1 Positive Data Input. HDB3 Decoder #1 positive rail input clocked on the positive 1 MLDPI1 transitions of the clock signal MLCK1. HDB3 Decoder #1 Negative Data Input. HDB3 Decoder #1 ...
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LXT6234— E-Rate Multiplexer Table 1. Input Signals (Continued) Pin # Sym National Bit Input. National Bit input that is placed in the 12th bit of the frame as per ITU G.742, G.751 36 MNAT specifications. AIS/Error Bit Input. AIS Bit ...
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Table 2. Output Signals Sym Pin # MLNRZO1 4 HDB3 Decoder #1 NRZ Output. HDB3 Decoder #1 NRZ output clocked on the rising edge of MLCK1. MLNRZO2 11 HDB3 Decoder #2 NRZ Output. HDB3 Decoder #2 NRZ output clocked on ...
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LXT6234— E-Rate Multiplexer Table 2. Output Signals (Continued) Sym Pin # HDB3 Encoder #1 Output -. HDB3 Encoder #1 negative rail output clocked out on the rising edge of DLDNO1 85 DLCI1. HDB3 Encoder #2 Output +. HDB3 Encoder #2 ...
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Functional Description The LXT6234 E-Rate Multiplexer consists of a multiplexer block, a demultiplexer block, five HDB3 decoders, and five HDB3 encoders. If the HDB3 codecs are used, the signal flow would be as follows: Multiplexer: Four tributaries of data ...
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LXT6234— E-Rate Multiplexer 3.3 HDB3 Decoder Alarms A Bipolar Violation Alarm (MLBPVx, DHBPV) associated with each HDB3 decoder indicate detection of a coding violation error within the data. Coding violations include Bipolar Violations, a string of more than four zeros ...
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In case of tributary transmission failure or the loss of a signal, tributary data can be forced to an all 1’s state. For each tributary this function is controlled at the MLFAISx pin. Figure 4. E2 Frame 213 217 J1 ...
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LXT6234— E-Rate Multiplexer 3.4.2 Multiplexer Alarms An indicator bit (MESAx) for each tributary monitors the status of the elastic store memory. This pin provides the justification status of the tributary. Under normal conditions this pin toggles at the frame rate ...
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Figure 6. Demultiplexer Side Block Diagram DHNRZI DHDMXC MODE DHDPI DHDNI DHHDB3C DLNRZI[1:4] 4 DLCI[1:4] Datasheet 4 DLNRZO[1:4] 4 DLCO[1:4] Demultiplexer And DNAT DAIS Timing 4 Control AUXO[1:4] DSYNC FLOS DHAISD DHNRZO HDB3 Decoder DHBPVO HDB3 4 4 DLDPO[1:4] ...
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LXT6234— E-Rate Multiplexer 4.0 Glossary AIS Alarm Indication Signal. AMI Alternate Mark Inversion. CCITT Consultative Committee for International Telegraph and Telephone (now called the International Telecommunications Union - ITU). CODEC COder/DECoder; An assembly comprising an encoder and a decoder within ...
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Application Information 5.1 E1/E3 Multiplexer Block Diagram Figure block diagram of the E1/E3 Multiplexer. Figure 7. E1/E3 Multiplexer Block Diagram MLCKx MHHDB3C DLCIx DHHB3C MLDPIx MLDNIx MHNRZI DHDPI DHDNI DLNRZIx MLNRZOx MLBPVx MHDPO MHDNO DHNRZO DHBPV ...
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LXT6234— E-Rate Multiplexer 5.1.3 LXT6234, E3 Stage • The multiplexer portion of the LXT6234 interleaves four asynchronous E2 rate NRZ data streams into a single E3 data stream. Depending on the configuration, either an on-board crystal oscillator or an external ...
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Test Specifications Note: Minimum and maximum values in Tables 3 through 9 and performance specifications of the LXT6234 E-Rate Multiplexer and are guaranteed by test except, where noted, by design. Typical values are not subject to production testing. The ...
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LXT6234— E-Rate Multiplexer 7.0 AC Timing Specifications Note: Unless otherwise specified, all timing specifications are referenced at ambient condition - Ambient Figure 8. HDB3 Encoder and Decoder Timing (Refer to Table 5) MLCKx ...
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Table 6. Multiplexer Tributary Input (Refer to Figure 9) Parameter Clock duty cycle Data to clock setup time (falling edge) Data to clock hold time (falling edge) Figure 10. High Speed Multiplexer Input & Output Timing (Refer to Table 7) ...
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LXT6234— E-Rate Multiplexer Figure 11. High Speed Demultiplexer Input & Output Timing (Refer to Table 8) DHDMXC DHNRZI DLNRZOx DLCOx DNAT/DAIS AUXOx Table 8. High Speed Demultiplexer Input & Output (Refer to Figure 11) Parameter Clock duty cycle Data to ...
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... Datasheet 100-Pin PQFP • Part Number LXT6234QE • Extended Temperature Range Table 10. 100-Pin Plastic Quad Flat Packs Inches Dim Min A – A 0.010 1 A 0.100 ...
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