DATASHEET
QLx4300-S45 FN6982
Rev 1.00
November 19, 2009 Quad Lane Extender
The QLx4300-S45 is a settable quad receive-side
equalizer with extended functionality for advanced
protocols operating with line rates up to 3.125Gb/s
such as InfiniBand (SDR) and 10GBase-CX4. The
QLx4300-S45 compensates for the frequency
dependent attenuation of copper twin-axial cables,
extending the signal reach up to 40m on 24AWG cable.
The small form factor, highly-integrated quad design is
ideal for high-density data transmission applications
including active copper cable assemblies. The four
equalizing filters within the QLx4300-S45 can each be
set to one of 32 compensation levels, providing optimal
signal fidelity for a given media and length. The
compensation level for each filter can be set by either
(a) three external control pins or (b) a serial bus
interface. When the external control pins are used, 18
of the 32 boost levels are available for each channel. If
the serial bus is used, all 32 compensation levels are
available. …
