GENERAL DESCRIPTION
The AD81591 is an asynchronous, protocol agnostic, quad-lane 2:1 switch with 12 differential PECL-/CML-compatible inputs and 12 differential CML outputs. The operation of this product is optimized for NRZ signaling with data rates of up to 3.2 Gbps per lane. Each lane offers two levels of input equalization and four levels of output pre-emphasis.
FEATURES
Port level 2:1 mux/1:2 demux
Each port consists of 4 lanes
Each lane runs from dc to 3.2 Gbps, independent of the other lanes
Compensates over 40 inches of FR4 at 3.2 Gbps through 2 levels of input equalization or 4 levels of output pre-emphasis
Accepts ac- or dc-coupled differential CML inputs
Low deterministic jitter, typically 20 ps p-p
Low random jitter, typically 1 ps rms
BER < 10−16
On-chip termination
Reversible inputs and outputs on one port
Unicast or bicast on 1:2 demux function
Port level loopback capability
Single lane switching capability
3.3 V core supply
Flexible I/O supply down to 2.5 V
Low power, typically 1 W in basic configuration
100-lead TQFP_EP
−40°C to +85°C operating temperature range
APPLICATIONS
Low cost redundancy switch
SONET OC-48/SDH-16 and lower data rates
XAUI (10 gigabit Ethernet) over backplane
Gigabit Ethernet over backplane
Fibre Channel 1.06 Gbps and 2.125 Gbps over backplane
InfiniBand® over backplane
PCI Express (PCIe) over backplane