Credo unveils Seagull 110 and Seagull XR8 PAM4 DSPs
Credo has expanded its SEAGULL Family of communications semiconductors with the Seagull 110 and Seagull XR8 PAM4 DSPs. The Seagull 110 is a 2x50G PAM4 retimer and the Seagull XR8 is an 8x50G PAM4 retimer. Both devices are backward-compatible, support legacy data rates, and are immediately available.
The company expects the Seagull 110 to find favor in support of 1:2 breakout active optical cables (AOCs) or optical transceiver links between servers with 50G PAM4 interfaces and top of rack or end-of-row switches. The Seagull XR8, meanwhile, is designed to enable VCSEL-based 400-Gbps PAM4 designs as alternatives to current single-mode-fiber alternatives for intra-rack connectivity. The Seagull XR8 supports 1:2, 1:4, and 1:8 breakout options.
Both devices integrate a digital signal processor (DSP) to compensate signal impairments for low optical sensitivity and BER floor. Other features include:
- Line-side transmitters with what Credo asserts is very low electrical TDECQ and high linearity.
- Integrated finite impulse response (FIR) filters to equalize out-impairments associated with PCB, optics, and connectors.
- Receiver and transmitter performance optimization features for optimal settings and performance tuning dedicated PLLs for each channel.
- A full suite of integrated test features.
- Line- and host-side loopbacks to facilitate lab debug and manufacturing testing.
“Next-generation data centers need continuous innovation to enhance product performance while lowering the overall cost-of-ownership and cooling requirements,” said Scott Feller, vice president, marketing at Credo. “Increased data traffic leads to continued data center growth accompanied by need for assurance of supply. Credo’s new DSPs address all customer requirements in one solution and perfectly suit both optical transceiver and AOC applications.”
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Stephen Hardy | Editorial Director and Associate Publisher, Lightwave
Stephen Hardy is editorial director and associate publisher of Lightwave and Broadband Technology Report, part of the Lighting & Technology Group at Endeavor Business Media. Stephen is responsible for establishing and executing editorial strategy across the both brands’ websites, email newsletters, events, and other information products. He has covered the fiber-optics space for more than 20 years, and communications and technology for more than 35 years. During his tenure, Lightwave has received awards from Folio: and the American Society of Business Press Editors (ASBPE) for editorial excellence. Prior to joining Lightwave in 1997, Stephen worked for Telecommunications magazine and the Journal of Electronic Defense.
Stephen has moderated panels at numerous events, including the Optica Executive Forum, ECOC, and SCTE Cable-Tec Expo. He also is program director for the Lightwave Innovation Reviews and the Diamond Technology Reviews.
He has written numerous articles in all aspects of optical communications and fiber-optic networks, including fiber to the home (FTTH), PON, optical components, DWDM, fiber cables, packet optical transport, optical transceivers, lasers, fiber optic testing, and more.
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