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The Marvell Alaska A MV-CHA140C0C-B0-FF130AE-C000 400G is a PAM4 DSP retimer for 400G/800G Active Electrical Cable (AEC) application, optimized for Switch to Switch and Switch to Server connectivity inside next generation cloud data center, highperformance computing and AI systems. 

Alaska A 400G is a retimer device which utilizes a 112G Gbps PAM4 DSP SERDES. There are 4-host and 4-line ports with each receiver port being able to recover 112Gbps PAM-4 signals and transmit to partnered TX. It can provide up to 400G (4 x 112G) full duplex mission mode traffic.

Alaska A supports multiple industry standard protocols up to 112Gbs for both host and lines sides (IEEE and CEI). It includes IEEE compliant Auto Negotiation and Link Training, for automatic tuning of the host link between the Switch/Server ASIC to the AEC, to maximize reach and link margins for high density switch designs. 

The Alaska A product family also includes a 800G retimer, providing optimized devices for both Straight and Split AEC applications (see figure).

The Alaska A retimer family is equipped with an industry leading PAM4 Digital Signal Processing (DSP) core for optimal performance with greater than 40dB loss on both the Line and Host interfaces. Alaska A 800G device includes several performance monitoring features including SNR, Eye histogram, for both Line and Host side interfaces. Additionally, both Host and Line interface support loopbacks and PRBS generator/checker for diagnostic operations.

Key Features

4x100G Full duplex

DSP based SerDes

Data rates

Support for IEEE Auto Negotiation and Training protocol

PRBS generation capabilities and eye monitoring capability on all high-speed interfaces

Package : 10mm x 13 mm BGA, 0.5mm pitch

Target Applications

• 400G/800G Active Electrical Cable (AEC)Cable (AEC)

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