Article ID: 000081212 Content Type: Troubleshooting Last Reviewed: 06/10/2013

What are the recommended SATA/SAS Signal Detect Preliminary Settings for Arria V GT/GX/ST/SX and Cyclone V GX/SX devices?

Environment

  • Arria® V ST SoC FPGA
  • Arria® V SX SoC FPGA
  • Arria® V GT FPGA
  • Cyclone® V GX FPGA
  • Arria® V GX FPGA
  • Cyclone® V SX SoC FPGA
  • Quartus® II Subscription Edition
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    Description

    Currently, SATA/SAS characterization for Arria® V GT/GX/ST/SX and Cyclone® V GX/SX devices are preliminary. Prior to availability of final characterization data, follow the recommended Signal Detect settings below:

    Quartus II QSF
    Assignment Settings

    Signal Detect Detection Time

    RX Vcm

    Signal Detection Threshold Voltage

    XCVR_RX_SD_ON

    XCVR_RX_SD_OFF

    XCVR_RX_COMMON_
    MODE_VOLTAGE

    XCVR_RX_SD_THRESHOLD

    i/m Variant

    X Variant

    Arria V GT/GX/ST/SX

    Gen 1

    2

    2

    0.65 V

    5 (40 mV)

    7 (50 mV)

    Gen 2

    4

    2

    Gen 3

    8

    4

    Cyclone V GX/SX

    Gen 1

    5

    4

    0.65 V

    5 (40 mV)

    7 (50 mV)

    Gen 2

    3

    2

    Notes:

    • These settings are allowed in Quartus® II software 13.0 DP1 and later versions.
    • You can change the QSF setting with different XCVR_RX_SD_ON and XCVR_RX_SD_OFF values based on your system level testing.

    Example of signal detect QSF assignment for the Arria V device Gen 3 (6Gbps) and m variant:

    1) Enable signal detect circuit
    set_instance_assignment -name XCVR_RX_SD_ENABLE ON -to <rx_serial_pin name>

    2) Setting hysteresis of the detection time
    set_instance_assignment -name XCVR_RX_SD_ON 8 -to <rx_serial_pin name> (1)
    set_instance_assignment -name XCVR_RX_SD_OFF 4 -to <rx_serial_pin name> (1)

    3) Setting the RX common mode voltage
    set_instance_assignment -name XCVR_RX_COMMON_MODE_VOLTAGE VTT_0P65V -to <rx_serial_pin name>

    4) Setting the detection of threshold voltage
    set_instance_assignment -name XCVR_RX_SD_THRESHOLD 5 -to <rx_serial_pin name> (1)


    Note:

    1. Refer to Altera Transceiver IP Core User Guide (PDF) for corresponding XCVR_RX_SD_THRESHOLD values and supported XCVR_RX_SD_ON and XCVR_RX_SD_OFF values.
    Resolution

     

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