SY69952ZC

The Microchip Technology SY69952ZC is a versatile, ATM-compatible single-chip transmitter and receiver IC. It is designed to provide clock recovery and generation for applications such as OC/STS-1 (51.84Mbit/s) and OC/STS-3 (155.52Mbps) SONET/SDH, as well as ATM applications.

This device seamlessly integrates transmitter and receiver functions, supporting clock and data recovery from 51.84Mbps or 155.52Mbps NRZ or NRZI data streams. It features on-chip clock generation using a low-jitter phase-locked loop (PLL), allowing for clock multiplication from reference sources like 19.44MHz for 155.52MHz generation or 6.48MHz for 51.84MHz generation. Clock recovery is achieved by synchronizing the on-chip VCO directly to the incoming data stream.

Key electrical specifications include a single +5V power supply requirement and 100K ECL compatible I/O. The SY69952ZC supports differential input and output buffering, link status indication, and loop-back testing. It is designed for seamless operation with various UNI processors from manufacturers like PMC-Sierra, VLSI, IgT, and NEC.

The SY69952ZC is available in a 28-pin SOIC package, suitable for surface mount applications. It complies with Bellcore, ITU/CCITT, and ANSI specifications, meeting jitter compliance criteria. This part serves as a replacement for the Cypress CY7B952.