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  • AMCC (Applied Micro Circuits Corporation ) : S3020/S3021

    ATM 622 Mbit/s Transmitter and Receiver

    The S3020/S3021 ATM transmitter and receiver chips are fully integrated serialization/deserialization ATM 622 Mbit/s interface devices. The chipset performs all necessary serial-to-parallel and parallel-to-serial functions in conformance with ATM transmission standards. The devices are suitable for SONET-based ATM applications. The figure below shows a typical network application.

    On-chip clock synthesis is performed by the high-frequency phase-locked loop on the S3020 transmitter chip allowing the use of a slower external transmit clock reference. Clock recovery is performed on the S3021 receiver chip by synchronizing its on-chip VCO directly to the incoming data stream. The S3021 also performs ATM frame detection. The chipset can be used with a 19.44 or 77.76 MHz reference clock, in support of existing system clocking schemes.

    The low jitter PECL interface guarantees compliance with the bit-error rate requirements of the Bellcore, ANSI, and ITU-T standards. Features are

    • Complies with ANSI, Bellcore, and ITU-T specifications
    • On-chip high-frequency PLL for clock generation and clock recovery
    • Supports 622.08 Mbit/s (OC-12/STM-4)
    • Reference frequencies of 19.44 and 77.76 MHz
    • Interface to both PECL and TTL logic
    • 8-bit TTL datapath
    • Diagnostic loopback mode
    • Lock detect
    • Low jitter PECL interface
    • < 2.0 Watt per set typically

    The part is packaged in 52 PQFP TEP.

    Technology: unknown
    Package: PQFP 52 Pin

    external WWW: Applied Micro Circuits Corporation : web page used to be available at:

    If you are the producer of this chip and want to correct/update the presented information, please feel free to register for direct database access.
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