The XSR 56G and 112G Interoperability Agreements (IAs) announced by the OIF are intended to cover a channel consisting of a pair of up to 50mm. The primary defined application of the XSR SerDes is connecting a chip to a “nearby” optical engine. Because the requirements on these channels are much less stringent than they are on long reach channels, XSR SerDes are expected to have lower power...
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