GENERAL DESCRIPTION
The AD8158 is an asynchronous, protocol-agnostic, quad-lane 2:1 switch with a total of 12 differential CML inputs and 12 differential CML outputs. The signal path supports NRZ signaling with data rates up to 6.5 Gbps per lane. Each lane offers programmable receive equalization, programmable output pre-emphasis, programmable output levels, and loss-of signal detection.
FEATURES
Quad 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
Port or single lane switching
1.8 V to 3.3 V flexible core supply
User-settable I/O supply from VCC to 1.2 V
Low power, typically 2.0 W in basic configuration
100-lead LFCSP
−40°C to +85°C operating temperature range
APPLICATIONS
Low cost redundancy switch
SONET OC48/SDH16 and lower data rates
XAUI/GbE/FC/Infiniband over backplane
OIF CEI 6.25 Gbps over backplane
Serial data-level shift
4-/8-/12-lane equalizers or redrivers