SI-Fi™ PCIe Gen4 Interposers


Product Description


Together with the new Kodiak™, SerialTek’s Gen4 (16.0 GT/s) PCI Express® (PCIe®) and Non-volatile Memory Express® (NVMe®) interposers with SI-Fi™ allow users to monitor an unprecedented variety of PCIe and NVMe bus traffic with unparalleled power and ease.

Enabled by SerialTek’s proprietary SI-Fi™ technology, users can save hours over legacy approaches requiring interposer calibration. This technology improves critical test coverage by providing high signal integrity, even over changing conditions, such as link training (LTSSM), Power Management, Hot Plug, Reset, and other tests where the physical link/lane characteristics may change.

Each lane’s analog signal is received at the probe’s differential input and distributed to two separate phase matched differential outputs with a nominal gain of 0dB, allowing the Host and Device signals to pass through the interposer, allowing for real-world PCIe link training and easier set-up of the analyzer and DUT.

SI-Fi™ PCIe Gen4 Interposers continue SerialTek’s TCO approach. With the focus on signal integrity, flexible, low-cost, SFF-8644-based cables connect each interposer to the analyzer. These cables are readily available and rated greater than 20GHz, resulting in uncompromised SI at all PCIe transfer rates.

All sideband signals are passed through the interposer from Root Complex (Host) to Controller (Device), and all are made available to the analyzer for trigger, decode, and analysis.

Key Features


  • SI-Fi™ Interposers require no calibration
  • Supports PCI Express Gen 1.0, 2.0, 3.0, and 4.0
    Accurate capture of PCIe data traffic at line rates including 16.0 GT/s (Gen4), 8.0 GT/s (Gen3), 5.0 GT/s (Gen2), and 2.5 GT/s (Gen1)
  • Single U.2 / U.3 interposer supports both single-port and dual-port capture (only one analyzer is needed for dual-port)
  • “Passive” tapping to avoid masking, hiding, or “cleaning up” electrical and/or link issues
  • Low-cost, flexible, high-performance cabling for reliable analyzer to interposer connections

Gen4 slot/AIC Sideband Signals


  • JTAG_TRST#
  • JTAG_TMS
  • JTAG_TDO
  • JTAG_TDI
  • JTAG_TCK
  • PRSNT2#_2
  • PRSNT2#_1
  • PRSNT2#_0
  • PRSNT#
  • GND
  • RSVD3 (x8 only)
  • RSVD2
  • RSVD1
  • SMBDAT
  • SMCLK
  • PWRBRK#
  • CLKREQ#
  • WAKE#
  • GND

 

U.2 and U.3 Overview


U.2 and U.3 available in one interposer or separate interposers
U.2 / U.3 interposer supports single-port (1×4) and dual-port (2×2) drives
U.2 / U.3 interposers available in standard and extended lengths
Dual-port: analyze both ports with only one analyzer

U.3 Sideband Signals


  • IFDET2#
  • PERST#
  • PERSTB#/CLKREQ#
  • ACTIVITY#
  • PRSNT#
  • IFDET#
  • PWRDIS
  • WAKE#
  • GND
  • GND
  • EXT_INPUT_LOGIC_1
  • EXT_INPUT_LOGIC_2
  • PCIE_SMDAT
  • PCIE_SMCLK
  • HPT1
  • HPT0
  • DUALPORTEN#
  • GND

U.2 (Standard Length)


  • Widths Supported (Single-port): x1, x2, x4
  • Widths Supported (Dual-port): x1 (2 x1), x2 (2 x2)
  • Speeds Supported: 2.5 GT/s (Gen1), Gen2 (5.0 GT/s), Gen3 (8.0 GT/s), 16.0 (Gen4)
  • Dimensions (Length x Width): 13.25 in. x 6.5 in. / 337mm x 165mm
  • Nose Length (max Drive Bay Depth supported): 5.375 in. / 136mm
  • Weight: 13.10 ozs / 372 grams


U.2 (Extended Length)


  • Widths Supported (Single-port): x1, x2, x4
  • Widths Supported (Dual-port): x1 (2 x1), x2 (2 x2)
  • Speeds Supported: 2.5 GT/s (Gen1), Gen2 (5.0 GT/s), Gen3 (8.0 GT/s)
  • Dimensions (Length x Width): 17.50 in. x 6.5 in. / 445mm x 165mm
  • Nose Length (max Drive Bay Depth supported): 9.376 in. / 238mm
  • Weight: 15.70 ozs / 446 grams

 

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