DS80PCI800SQ Datasheet, PDF (1/45 Pages) Texas Instruments – DS80PCI800 2.5 Gbps / 5.0 Gbps / 8.0 Gbps 8 Channel PCI Express Repeater

DS80PCI800
www.ti.com
SNLS334E – APRIL 2011 – REVISED MARCH 2012
DS80PCI800 2.5 Gbps / 5.0 Gbps / 8.0 Gbps 8 Channel PCI Express
Repeater with Equalization and De-Emphasis
Check for Samples: DS80PCI800
FEATURES
1
•2 Comprehensive family, proven system inter-
operability
– DS80PCI102 : x1 PCIe Gen-1/2/3
– DS80PCI402 : x4 PCIe Gen-1/2/3
– DS80PCI800 : x8/x16 PCIe Gen-1/2/3
• Automatic rate detect and adaptation to Gen-
1/2/3 speeds
• Seamless support for Gen-3 transmit FIR
handshake
• Rate adaptive receive EQ (up to 36 dB),
transmit de-emphasis (up to 12 dB) only Gen-
1/2
• Adjustable Transmit VOD: 0.8 to 1.3 Vp-p (pin
mode)
• 0.2 UI of residual deterministic jitter at 8 Gbps
after 40” of FR4 or 10m 30awg PCIe Cable
• Low power dissipation with ability to turnoff
unused channels: 65 mW/channel
• Automatic receiver detect (hot-plug)
• Multiple configuration modes:
Pins/SMbus/Direct-EEPROM load
• Flow-thru pinout: 54-pin LLP (10 mm x 5.5 mm,
0.5 mm pitch)
• Single supply voltage: 2.5V or 3.3V (selectable)
• 3 kV HBM ESD rating
• −40 to 85°C operating temperature range
DESCRIPTION
The DS80PCI800 is a low power, 8 channel repeater with 4-stage input equalization, and output de-emphasis
driver to enhance the reach of PCI express serial links in board-to-board or cable interconnects. Ideal for higher
density x8 and x16 PCI express configurations, the DS80PCI800 automatically detects and adapts to Gen-1,
Gen-2 and Gen-3 data rates for easy system upgrade.
Each channel supports seamless detection and management of the new Gen-3 transmit equalizer coefficients
(FIR tap) handshake protocol and PCIe control signals such as transmit idle, beacon etc. without external system
intervention. An automatic receive detection circuitry controls the input termination impedance based upon
endpoint insertion (hot-plug events). These features guarantee PCIe interoperability at both the electrical and
system level, while reducing design complexity.
Powered by National’s SiGe BiCMOS process, DS80PCI800 offers programmable transmit de-emphasis (up to
12 dB), transmit VOD (up to 1300 mVp-p) and receive equalization (up to 36 dB) to enable longer distance
transmission in lossy copper cables (10m+), or backplanes (40”+) with multiple connectors. The receiver is
capable of opening an input eye that is completely closed due to inter-symbol interference (ISI) introduced by the
interconnect medium.
The programmable settings can be applied easily via pins, software (SMBus/I2C) or loaded via an external
EEPROM. When operating in the EEPROM mode, the configuration information is automatically loaded on power
up, which eliminates the need for an external microprocessor or software driver.
With a low power consumption and control to turn-off unused channels, the DS80PCI800 is part of National's
PowerWise family of energy efficient devices.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2011–2012, Texas Instruments Incorporated