Intel® Agilex™ Device Family Pin Connection Guidelines

ID 683112
Date 6/21/2022
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1.2.10. Power Supply Pins

Note: Intel® recommends that you create an Intel® Quartus® Prime design, enter your device I/O assignments, and compile the design. The Intel® Quartus® Prime software will check your pin connections according to I/O assignment and placement rules. The rules differ from one device to another based on device density, package, I/O assignments, voltage assignments, and other factors that are not fully described in this document or the device handbook.
Note: Intel® recommends you to generate a .pin file from the Intel® Quartus® Prime Fitter to verify power pin assignment. Intel® also recommends using this .pin file to determine if it is safe to power down or ground certain power supplies for your specific design. This step will inform you to make the appropriate design choices for unused power supplies for your design.
Table 11.  Power Supply Pins
Pin Name Pin Functions Pin Description Connection Guidelines
VCCP Power VCCP supplies power to the periphery.

VCC and VCCP must operate at the same voltage level, should share the same power plane on the board, and be sourced from the same regulator.

For details about the recommended operating conditions, refer to the Electrical Characteristics section in the Intel® Agilex™ Device Data Sheet.

Use the Intel® FPGA Power and Thermal Calculator and the Intel® Quartus® Prime Power Analyzer to determine the current requirements for VCCP and other power supplies. Decoupling for these pins depends on the decoupling requirements of the specific board.

VCC Power VCC supplies power to the core.

VCC and VCCP must operate at the same voltage level, should share the same power plane on the board, and be sourced from the same regulator.

For details about the recommended operating conditions, refer to the Electrical Characteristics section in the Intel® Agilex™ Device Data Sheet.

Use the Intel® FPGA Power and Thermal Calculator and the Intel® Quartus® Prime Power Analyzer to determine the current requirements for VCC and other power supplies. Decoupling for these pins depends on the decoupling requirements of the specific board.

VCCPT Power Power supply for the IOPLL, programmable power technology, and I/O pre-drivers.

Connect VCCPT to a 1.8-V low noise switching regulator. You have the option to source the following from the same regulator as VCCPT:

  • VCCPLL_SDM, VCCPLL_HPS, and VCCADC with proper isolation filtering

Voltage spike ringing may be observed on VCCPT during device power-down sequencing if VCC is powered down before VCCPT, with the magnitude of the voltage spike ringing higher than VCCPT. This is the expected behavior and will neither cause any functional failure nor reliability concerns to the device.

For more details about the decoupling recommendations for this voltage rail, refer to the AN 910: Intel® Agilex™ Power Distribution Network Design Guidelines.

For the power rail sharing, refer to the Power Supply Sharing Guidelines for Intel® Agilex™ Devices.

VCCRCORE Power Transceiver core power supply. For use in Intel® Agilex™ production devices only (placed here for migration purposes).

Connect the VCCRCORE to 1.2-V power supply.

You have the option to source VCCRCORE from the same regulator as VCCIO_PIO only when you are using the DDR4 I/O standard with proper isolation filtering.

VCCH Power Analog Interface Bridge (AIB) and digital transceiver power supply.

Connect all VCCH pins to a 0.9-V low noise switching power supply for Intel® Agilex™ devices with E-tile and P-tile.

Connect all VCCH pins to a 0.8-V low noise switching power supply for Intel® Agilex™ devices with F-tile and R-tile.

For more details, refer to the Intel® Agilex™ Device Data Sheet.

VCCH_SDM Power Voltage rail sense.

Must connect this sense to the VCCH rail for the Intel® Agilex™ devices with E-tile and P-tile.

Must connect this sense to the VCC_HSSI_GXR rail for the Intel® Agilex™ devices with both F-tile and R-tile.

Must connect this sense to the VCCH rail for the Intel® Agilex™ device with F-tile only.

VCCA_PLL Power I/O clock network power supply.

For Intel® Agilex™ production devices and other Intel® Agilex™ ES (except 2486A package) devices, connect VCCA_PLL to a 1.2-V low noise switching regulator. You have the option to source VCCA_PLL from the same regulator as VCCIO_PIO with proper isolation filtering. The VCCA_PLL rail must reside in Group 3 power rails.

VCCIO_PIO[2][A,B,C,D,E,F]

VCCIO_PIO[3][A,B,C,D,E,F]

Power

These are the supply voltage pins for the I/O banks. Each bank can support a different voltage level.

Supported VCCIO standards include the following:

  • 1.2-V LVCMOS
  • SSTL12/Diff SSTL12
  • HSTL12/ Diff HSTL12
  • HSUL12/ Diff HSUL12
  • POD12/ Diff POD12
  • True Differential Signaling

For more information about the supported pins, refer to the device pin-out file.

Connect these pins to a 1.2-V or 1.5-V power supplies, depending on the I/O standard required by the specific bank.

Connect the unused I/O bank power to 1.2V or 1.5V if the I/O bank will be used in future. Connect unused I/O bank power to GND and I/O pins floating if the I/O bank will not be used in future. Do not leave the VCCIO_PIO floating.

If VCCIO_PIO_3A is tied to GND, connect VCCIO_PIO_SDM to VCCRCORE.

During the power-up sequence only, a transient current whose magnitude is less than the VCCIO_PIO operating static current may be observed as the VCCIO_PIO transistors become operational. This is the expected behavior and will neither cause any functional failure nor reliability concerns to the device if the power-up or power-down sequence is followed.

For more details, refer to the Intel® Agilex™ Sensor Monitoring System chapter in the Intel® Agilex™ Power Management User Guide.

For the power rail sharing, refer to the Power Supply Sharing Guidelines for Intel® Agilex™ Devices.

VCCIO_PIO_SDM Power VCCIO_PIO voltage rail sense line. Connect these pins to bank VCCIO_PIO_3A. You must supply 1.2 V to VCCIO_PIO_3A if you are using AVST x16 or AVST x32 mode.
VCCIO_SDM Power Configuration pins power supply.

Connect these pins to a 1.8-V power supply.

For more details about the decoupling recommendations for this voltage rail, refer to the AN 910: Intel® Agilex™ Power Distribution Network Design Guidelines.

For the power rail sharing, refer to the Power Supply Sharing Guidelines for Intel® Agilex™ Devices.

VCCPLLDIG_SDM Power SDM block PLL power pins. VCCPLLDIG_SDM must be sourced from the same regulator as VCCL_SDM with proper isolation filtering.
VCCL_SDM Power SDM power supply. Connect these pins to a 0.8-V power supply.
VCCBAT Power Battery back-up power supply for device security Advanced Encryption Standard, Battery-backed RAM (AES BBRAM) key register.

When using the device security AES BBRAM key, connect this pin to a non-volatile battery power source in the range of 1.0 V – 1.8 V.

Provide a minimum decoupling of 47 nF for the VCCBAT power rail near the VCCBAT pin.

When not using the AES BBRAM key, tie this pin to ground.

VCCPLL_SDM Power VCCPLL_SDM supplies analog power to the SDM block PLLs.

With proper isolation filtering, you have the option to source VCCPLL_SDM from the same regulator as VCCPT.

Decoupling for these pins depends on the design decoupling requirements of the specific board.

GND Ground Device ground pins. Connect all GND pins to the board ground plane.

VREFB[2][AN0,BN0,CN0,DN0,EN0,FN0]

VREFB[3][AN0,BN0,CN0,DN0,EN0,FN0]

Power

Input reference voltage for each I/O bank. If a bank uses a voltage-referenced I/O standard, then use these pins as voltage-reference pins for the bank.

For more information about the supported pins, refer to the device pin-out file.

If VREF pins are not used, connect them to GND.

VCCLSENSE Output Differential sense line to external regulator.

VCCLSENSE and GNDSENSE are differential remote sense pins for the VCC power. Connect your regulators’ differential remote sense lines to the respective VCCLSENSE and GNDSENSE pins. This compensates for the DC IR drop associated with the PCB and device package from the VCC power. Route these connections as differential pair traces and keep them isolated from any other noise source.

You must connect the VCCLSENSE and GNDSENSE lines to the regulator’s remote sense inputs.

GNDSENSE
VCCADC Power ADC power pin for the voltage sensors.

You must supply a low noise 1.8-V power supply to this pin if you are using the internal voltage sensors of the Intel® Agilex™ device.

Tie this pin to VCCPT with proper isolation filtering.

VCCFUSEWR_SDM Power The required power supply to program (write) the optional, one-time programmable eFuses. These eFuses are an integral part of the Intel® Agilex™ security architecture.

Connect this pin to 1.8V. The capability of the low-dropout (LDO) regulator should be ≥1 A.

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