6.5 Gbps Dual Buffer Mux/Demux
The nonblocking switch-core of the AD8155 implements a 2:1 multiplexer and 1:2 demultiplexer per lane and supports independent lane switching through the two select pins, SEL[1:0]. Each port is a two-lane link. Every lane implements an asynchronous path supporting dc to 6.5 Gbps NRZ data, fully independent of other lanes. The AD8155 has low latency and very low lane-to-lane skew.
The main application of the AD8155 is to support redundancy on both the backplane and the line interface sides of a serial link. The demultiplexing path implements unicast and bicast capability, allowing the part to support either 1+1 or 1:1 redundancy.
The AD8155 is also suited for testing high speed serial links because of its ability to duplicate incoming data. In a port monitoring application, the AD8155 can maintain link connectivity with a pass-through connection from Port C to Port A while sending a duplicate copy of the data to test equipment on Port B.
The rich feature set of the AD8155 can be controlled either through external toggle pins or by setting on-chip control registers through the I2C® interface.
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
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