New Product Brief
Product Databrief
PI3EQX8908/8984
2.5Gbps/5.0Gbps/8.0Gbps 8-channel PCI Express ReDriver
with Equalization & De-emphasis
Pericom Semiconductors PI3EQX8908/8984 is a PCI Express
Features
Gen1/2/3 8-differential channels ReDriver.
Support up to 8Gbps serial link
The device provides per channel programmable equalization,
Supporting 8 channels in Flowthrough pin-out
output swing, de-emphasis, and amplifier gain.
2 (54-pin PI3EQX8908) and 4 bi-directional lanes
The PI3EQX8908/8984 provides master / slave I C Control,
(72-pin PI3EQX8984)
to optimize performance over a variety of physical mediums by
Independent channel configuration of receiver equal-
reducing Inter-symbol interference.
ization, output swing, de-emphasis, and amplifier gain
PI3EQX8908/8984 supports eight 100-Ohm differential
Per Channel Activity Detector with selectable input term-
data I/Os and extends the signals across other distant data
ination between 50 to V and > 200K
DD
pathways on the users platform.
Per channel output termination detect on power-up with
Pericom PI3EQX8908/8984 offers programmable transmit
selectable output termination between 100 differential
de-emphasis (up to 9 dB), transmit VOD (up to 1200 mVp-p)
and High Impedance
and receive equalization (up to 32.6 dB) to enable longer
2
Pin strap and I C master / slave selectable device
distance transmission in lossy copper cables (10m+), or
programming with external EEPROM
backplanes (40+) with multiple connectors. The receiver is
2
capable of opening an input eye that is completely closed due
4-bit selectable address bit for I C
to inter-symbol interference (ISI) introduced by the interconnect
Hot Plug Detect allows host to reset if end point is
medium.
removed (see note 1)
The programmable settings can be applied easily via pins,
Supply Voltage: 3.3V10%
2
software (I C) or loaded via an external EEPROM.
Packaging (Pb-free & Green):
When operating in the EEPROM mode, the configuration
54-contact TQFN (10mm x 5.5mm, 0.5mm pitch)
information is automatically loaded on power up, which
(PI3EQX8908)
eliminates the need for an external microprocessor or software
72-contact TQFN (11mm x 5mm, 0.5mm pitch)
driver.
(PI3EQX8984) - Backward Compatible to pinout of
PI2EQX8864A
Eye Diagram
Before Channel Loss
Before ReDriver
After ReDriver
Pericom
ReDriver
Device
Equalizer, De-emphasis,
Host Channel Loss
End Point
Swing, and Amplifier Gain
TX
+ + + +
RX
Long input trace,
Output trace
cable, or connectors
- - -
-
RX + + +
+ TX
Long output trace,
Input trace
cable, or connectors
-
- - -
www.pericom.com | 1-408-232-9100 X-ON Electronics
Largest Supplier of Electrical and Electronic Components
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