Datasheet

DS50PCI401
www.ti.com SNLS292J –JUNE 2009–REVISED APRIL 2013
DS50PCI401 2.5 Gbps / 5.0 Gbps 4 Lane PCI Express Repeater with
Equalization and De-Emphasis
Check for Samples: DS50PCI401
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FEATURES
DESCRIPTION
The DS50PCI401 is a low power, 4 lane bidirectional
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• Input and Output signal conditioning
buffer/equalizer designed specifically for PCI Express
increases PCIe reach in backplanes and
Gen1 and Gen2 applications. The device performs
cables
both receive equalization and transmit de-emphasis,
• 0.09 UI of residual deterministic jitter at 5Gbps
allowing maximum flexibility of physical placement
after 42” of FR4 (with Input EQ)
within a system. The receiver is capable of opening
an input eye that is completely closed due to inter-
• 0.11 UI of residual deterministic jitter at 5Gbps
symbol interference (ISI) induced by the interconnect
after 7m of PCIe Cable (with Input EQ)
medium.
• 0.09 UI of residual deterministic jitter at 5Gbps
The transmitter de-emphasis level can be set by the
with 28” of FR4 (with Output DE)
user depending on the distance from the
• 0.13 UI of residual deterministic jitter at 5Gbps
DS50PCI401 to the PCI Express endpoint. The
with 7m of PCIe Cable (with Output DE)
DS50PCI401 contains PCI Express specific functions
• Adjustable Transmit VOD 800 to 1200mVp-p
such as Transmit Idle, RX Detection, and Beacon
signal pass through.
• Automatic power management on an
individual lane basis via SMBus
The device will change the load impedance on its
• Adjustable electrical idle detect threshold.
input pins based on the state of RXDETA/B inputs
detection. An internal rate detection circuit is included
• Data rate optimized 3-stage equalization to 26
to detect if an incoming data stream is at Gen2 data
dB gain
rates, and adjusts the de-emphasis on it's output
• Data rate optimized 6-level 0 to 12 dB transmit
accordingly. The signal conditioning provided by the
de-emphasis
device allows systems to upgrade from Gen1 data
rates to Gen2 without reducing their physical reach.
• Flow-thru pinout in 10mmx5.5mm 54-pin
This is true for FR4 applications such as backplanes,
leadless WQFN package
as well as cable interconnect.
• Single supply operation at 2.5V
• >6kV HBM ESD rating
• -10 to 85°C operating temperature range
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PRODUCTION DATA information is current as of publication date.
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Products conform to specifications per the terms of the Texas
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