Digital wrapper targets 10-Gbit needs
-- EDN, January 18, 2001
The S19203 Hudson digital wrapper from Applied Micro Circuits targets 10-Gbps applications and supports both traditional SONET/SDH and G.709 digital-wrapper standards. Digital wrapper combines the features of SONET/SDH but reduces the overhead that makes it less than desirable for IP networks by grouping several frames into a "superframe," which you can more efficiently manage with a relatively smaller overhead. Targeting wide-area networks, digital wrappers also extend the current SONET/SDH infrastructure and enable the transparent transportation of multiple protocols across the network.
The Hudson has programmable forward error correction for rates as fast as 10.66 Gbps and supports OC-192 transmission standards. The core runs on a 1.8V supply. You can configure the two input and two output ports in multiple ways to provide redundant input/output lines for protection switching or independent data streams for duplex operation. The Hudson offers digital-wrapper performance monitoring and optical-channel-overhead insertion and extraction. The device comes in a 624-bump CBGA and is currently available for sampling; volume production is slated for the second quarter.
Applied Micro Circuits Corp, 1-800-755-2622, www.amcc.com.
-by Nicholas Cravotta
