53Gbps per Lane Optical DSP

Seagull 50

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 50 is the initial member of the 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 50 (CFD10101) 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.


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
Optical Modules


  • 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

Let's Connect

Product Form