➀ Broadcom has announced the general availability of Sian2, its 200Gbps per lane PAM-4 DSP PHY that supports 100Gbps electrical and 200Gbps optical interfaces. Sian2 and Sian DSPs are designed to enable pluggable modules with 200G/lane interfaces for next-generation AI clusters. ➁ The migration from 400G/800G links with 100G/lane optics to 800G/1.6T links with 200G/lane optics is necessary for higher bandwidth, lower power, lower latency, and lower cost. ➂ Sian2 and Sian DSPs are optimized for 800G and 1.6T optical module platforms, doubling the bandwidth with lower power, lower latency, and lower cost per bit to facilitate AI data center scale.