PI2EQX5984 Datasheet, PDF (1/1 Pages) Pericom Semiconductor Corporation – 5.0Gbps 4-Lane PCIe® 2.0 ReDriver

Product Databrief
PI2EQX5984
5.0Gbps 4-Lane PCIe^® 2.0 ReDriver™ with Equalization, Emphasis, & I²C Control
Pericom Semiconductor’s PI2EQX5984 is a low power, PCIe^®
compliant signal ReDriver™. The device provides programmable
equalization, amplification, and de-emphasis by using 8 select
bits, to optimize performance over a variety of physical mediums
by reducing Inter-symbol interference.
PI2EQX5984 supports eight 100-Ohm 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 signal after the redriver.
In addition to providing signal re-conditioning, Pericom’s
PI2EQX5984 also provides power management Stand-by mode
operated by a Bus Enable pin.
Block Diagram
xyRx+
xyRx-
xyTx+
xyTx-
+
−
+
− _Equalizer
Input level detect
to control logic
Output
Controls
+
−
xyTx+
xyTx-
+
−
Output
Controls
A
B
Input level detect
to control logic
Equalizer
+
−
+
−
SELy_x
Sy_x
Dy_x
DE_x
PD#
Data Lane Repeats 4 Times
Control Registers
& Logic
Mode
LB#
RXD_x
RES_x
Power
Management
SDA
SCL
I²C Control
Ax
xyRx+
xyRx-
Features
• Up to 5.0Gbps PCI Express^® 2.0 Serial ReDriver
• Supporting 8 differential channels or 4 lanes
of PCIe Interface
• I²C configuration controls (3.3V tolerant)
• Adjustable receiver equalization and transmitter
de-emphasis and output levels
• Variable input an output termination
• 1:2 channel broadcast
• Channel loop-back/Mux and Demux Mode
• Electrical Idle fully supported
• Receiver detect and individual output control
• Fine adjustment of electrical idle threshold via I²C
• Single supply voltage, 1.2V ± 0.05V
• Power down modes
• Industrial Temp support, -40°C ~ +85°C
• Packaging: 72-contact TQFN, Pb-free & Green
Figure1
PCIe 2.0
ReDriver
PI2EQX6874
Blade Server
PCIe 2.0 Cable
Blade Server
Figure1
Redrivers with emphasis and equalization signal conditioning technology ensure
the integrity of high-frequency PCIe signals by opening closed signal eyes to
recover data and meet strict compliance testing requirements. Increased signal
margin also supports longer drive lenghts over even low-quality cables.
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