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*PI2EQX4401D/PI2EQX4402D replace PI2EQX4401/PI2EQX4402 for
new designs
PCIe ReDriver™ External Signal Integrity Demonstration (back
to top)
Pericom's PI2EQX3201 and PI2EQX3202 offer
unique solutions to solve high-speed signal integrity problems
either on PCB boards or through cables and multiple connector
points while operating up to 4.5Gbps bandwidth.
The signal attenuation loss increases as trace lengths increase in a signal path using high-speed differential signaling. Pericom's industry unique devices boost signals by combining programmable equalization and de-emphasis techniques at the Transmit and Receive points, respectively, on a signal path to ensure good signal integrity at the end points.
Another benefit is Pericom ReDriver™ can be used with
inexpensive cables, such as CAT6 or flexible ribbon cables,
instead of using very expensive cables to achieve good signal integrity
at the end of the trace. The Pericom applications laboratory incorporates
an impressive twenty-five feet of CAT6 cable running signals in a 2.5Gbps
PCI Express system.
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PCIe
ReDriver™ Internal Trace Length Demonstration (back
to top)
This is an industry unique 2.5Gbps x2 Lane Serial PCIe Repeater/Equalizer.
PI2EQX4402D is
a low power, PCI-Express compliant signal ReDriver. The device
provides programmable equalization, amplification, and de-emphasis
by using 7 select bits, SEL[0:6], to optimize performance over
a variety of physical mediums by reducing Inter-symbol interference.
PI2EQX4402D supports four 100 Differential CML data I/O’s
between the Protocol ASIC to a switch fabric, across a backplane,
or extends the signals across other distant data pathways on
the user’s platform.
The integrated equalization circuitry provides flexibility with signal integrity of the PCI-express signal before the ReDriver. Whereas the integrated de-emphasis circuitry provides flexibility with signal integrity of the PCI-express signal after the ReDriver. In addition to providing signal re-conditioning, Pericom’s PI2EQX4402 also provides power management Stand-by mode operated by a Bus Enable pin.
The graphic below was on display at the Intel Developer Forum held in San Francisco August 23-25, 2005. The 5 foot tall circuit board was a fun way to show our devices functioning at 60" of trace length. Yes! 60 inches!
PCI Express ReDriver™ Performance: |
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PERICOM EQUALIZATION |
WITHOUT
EQUALIZATION |
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