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53G per Lane Optical DSP

Seagull 51

The SEAGULL Platform Optical DSPs are designed for 5G front-, mid-, and back-haul wireless networks. The versatile device can also be used as a Gearbox or Retimer mux for enterprise data center applications. Seagull 51 (CFD13201) is the second generation of the single-channel 53G SEAGULL Platform of DSPs for 5G wireless applications.

Credo’s proprietary PAM4 DSP architecture minimizes die size and utilizes mainstream silicon process technology to deliver optimal cost, power, and performance for the next generation of optical modules. Pluggable optical modules with Credo PAM4 DSPs enjoy the lowest cost-of-ownership and industry-leading performance while using minimal power.

Seagull 51 is used in the next generation of low-power, high-performance QSFP28, SDFP, and SFP56 optical modules that support 50Gbps SR, DR, FR, and LR applications with PAM4 modulation.

This generation integrates drivers for direct connection to VCSEL and EML, eliminating the need for external drivers and simplifying  the optics interface. The Seagull 51 is designed to utilize designs and software based on the first-generation Seagull 50 hardware and software for a fast, smooth migration to the Seagull 51.

Parameters

Host Side
2 x 25G NRZ or 1 x 53G PAM4
Line Side
1 x 53G PAM4
Package Size
5mm x 5mm
Operating Temperature
0° to 85°C
Communication Interface
MDIO / I²C
Process
CMOS
Optical Modules
QSFP28 / SDFP / SFP56

Features

  • Integrated VCSEL and EML drivers
  • DSP with industry-leading performance
  • Adaptive CTLE and multi-tap DFE and FFE on line and host side receivers
  • Multi-tap FIR filter on line and host side transmitters
  • Flexible configuration in gearbox or mux retimer modes
  • LOS and LOL detection
  • Diagnostic features including pattern generators and checkers, eye monitor and loopbacks
  • Optimized, compact firmware
  • Low power dissipation

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