Stratix® 10 Device Family Pin Connection Guidelines

ID 683028
Date 12/19/2024
Public
Document Table of Contents

1.2.3. Notes to Stratix® 10 HBM Pins

Note: Altera recommends that you create a Quartus® Prime design, enter your device I/O assignments, and compile the design. The Quartus® Prime software checks 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 user guides.

Altera provides these guidelines only as recommendations. It is the responsibility of the designer to apply simulation results to the design to verify proper device functionality.

  1. These pin connection guidelines are created based on the Stratix® 10 MX device variant.
  2. Select the capacitance values for the power supply after you consider the amount of power they need to supply over the frequency of operation of the particular circuit being decoupled. Calculate the target impedance for the power plane based on current draw and voltage drop requirements of the device/supply. Then, decouple the power plane using the appropriate number of capacitors. On-board capacitors do not decouple higher than 100 MHz due to "Equivalent Series Inductance" of the mounting of the packages. Consider proper board design techniques such as interplane capacitance with low inductance for higher frequency decoupling. Refer to the PDN tool.
  3. Use the Stratix® 10 Early Power Estimator (EPE) or Power Thermal Calculator (PTC) to determine the preliminary current requirements for VCC and other power supplies. Use the Quartus® Prime Power Analyzer for the most accurate current requirements for this and other power supplies.
  4. These supplies may share power planes across multiple Stratix® 10 devices when using fixed voltage ordering codes (-L and -X suffixes). Only VCC and VCCP cannot be shared when using SmartVID ordering codes (-V suffix).
  5. Power pins should not share breakout vias from the BGA. Each ball on the BGA needs to have its own dedicated breakout via. VCC must not share breakout vias.
  6. Example 7 and Example 8 illustrate the power supply sharing guidelines for the Stratix® 10 MX devices.
  7. Low Noise Switching Regulator—defined as a switching regulator circuit encapsulated in a thin surface mount package containing the switch controller, power FETs, inductor, and other support components. The switching frequency is usually between 800 kHz and 1 MHz and has fast transient response. The switching frequency range is not an Altera requirement.
  8. The number of modular I/O banks on Stratix® 10 devices depends on the device density. For the indexes available for a specific device, refer to the I/O Bank section in the Stratix® 10 General Purpose I/O User Guide .
  9. For AC-coupled links, the AC-coupling capacitor can be placed anywhere along the channel. PCI Express* protocol requires the AC-coupling capacitor to be placed on the transmitter side of the interface that permits adapters to be plugged and unplugged.
  10. Decoupling for these pins depends on the design decoupling requirements of the specific board.