The nonblocking switch-core of the AD8155ACPZ 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 AD8155ACPZ has low latency and very low lane-to-lane skew.
The main application of the AD8155ACPZ 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 AD8155ACPZ is also suited for testing high speed serial links because of its ability to duplicate incoming data. In a port monitoring application, the AD8155ACPZ 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 AD8155ACPZ can be controlled either through external toggle pins or by setting on-chip control registers through the I2C® interface.
Feature
- Dual 2:1 mux/1:2 demux
- Optimized for dc to 6.5 Gbps NRZ data
- Per-lane P/N pair inversion for routing ease
- Programmable input equalization Compensates up to 40 inches of FR4
- Loss-of-signal detection
- Programmable output pre-emphasis up to 12 dB
- Programmable output levels with squelch and disable
- Accepts ac-coupled or dc-coupled differential CML inputs
- 50 Ω on-chip termination
- 1:2 demux supports unicast or bicast operation
- Port-level loopback
- See data sheet for additional Features
Applications
- Low cost redundancy switch
- SONET OC48/SDH16 and lower data rates
- RXAUI, 4x Fibre Channel, Infiniband , and GbE over backplane
- OIF CEI 6.25 Gbps over backplane
- Serial data-level shift
- 2-/4-/6-lane equalizers or redrivers
