PI3EQX8908A Datasheet, PDF (1/1 Pages) Pericom Semiconductor Corporation – Linear Equalization

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PI3EQX8908A
2.5Gbps/5.0Gbps/8.0Gbps 8-channel PCI Express ReDriver™
with Linear Equalization
Description
Pericom Semiconductor’s PI3EQX8908A is a PCIe, 8 dif-
ferential channels ReDriver™. The device provides program-
mable linear equalization, output swing and gain, by either
pin strapping option or I²C Control, to optimize performance
over a variety of physical mediums by reducing Inter-symbol
interference.
The PI3EQX8908A supports eight 100-Ohm Differential
CML data I/O’s and extends the signals across other distant
data pathways on the user’s platform.
The programmable settings can be applied easily via pins,
software (I²C) or loaded via an external EEPROM. When op-
erating in the EEPROM mode, the configuration information is
automatically loaded on power up, which eliminates the need
for an external microprocessor or software driver.
The PI3EQX8908A offers fully Linear Transfer function to fully
comply with all PCIe 3 Link Training signals.
Eye Diagram
Features
ÎÎ2.5/5.0/8.0Gbps serial link with linear equalizer
ÎÎSupport PCIe Gen 1/2/3 protocol
ÎÎSupporting 8 differential channels
ÎÎIndependent channel configuration of receiver equal-
ization, output swing and flat gain
ÎÎPer Channel Activity Detector with selectable input
termination between 50Ω to VDD and 200KΩ to VDD
ÎÎPer Channel Output Termination Detector on power
up with selectable output termination between 50Ω
to VDD and High impedance
ÎÎVery linear transfer funtion
ÎÎFully compliant to PCISIG Link Training
ÎÎSingle-ended mode receiver detection for PCIe
ÎÎInput Threshold detection
ÎÎPin strap and I²C master/slave selectable device
programming with external EEPROM
ÎÎ4-bit selectable address bit for I²C
ÎÎSupply Voltage: 3.3V±0.3V
ÎÎIndustrial Temperature Range: -40^oC to 85^oC
Packaging (Pb-free & Green):
ÎÎ54-contact TQFN (10mm x 5.5mm x 0.5mm pitch)
- flowthrough pinout
Before Channel Loss
Host
TX +
-
RX +
-
Channel Loss
Long input trace,
cable, or connectors
Long output trace,
cable, or connectors
Before ReDriver
Pericom
ReDriver
Equalizer, De-emphasis,
Swing, and Amplifier Gain
+
+
-
-
+
+
-
-
After ReDriver
Output trace
Input trace
Device
End Point
+ RX
-
+ TX
-
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