Stratix® 10 Device Family Pin Connection Guidelines

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

1.1.5. 3.3 V I/O 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.
Table 5.  3.3 V I/O Pins
Note: The Stratix® 10 GX 400 and Stratix® 10 SX 400 devices in the HF35 package support 3.3 V I/Os that are not available in other devices in this package. This must be taken into consideration if you plan to migrate between devices in this package.
Pin Name ( Stratix® 10 Devices) Pin Name ( Stratix® 10 GX 10M Device) Pin Functions Pin Description Connection Guidelines

IO33_[5:0]_[7:0]

I/O

These are 3.3 V I/O pins. The I/O bank is known as the 3.3 V I/O bank and it is only available in the HF35 package of the GX400 (1SG040) and SX400 (1SX040) devices. These pins support 3.0 V and 3.3 V I/O.

The index of [5:0] represents the grouping of the I/O pins and the index of [7:0] represents the pin numbering within the same group. The I/O pin can be configured as an input or output within the same grouping index. When any of the pin within the same group is configured as an input or output, the remaining pins are configured to the same I/O direction. The same I/O buffer setting such as the slew rate and weak pull-up functions are applied for pins within the same grouping. Altera recommends you to plan the I/O resources before implementing your design.

For more details about the supported I/O standards and features, refer to the Stratix® 10 General Purpose I/O User Guide .

Fore more details about the I/O electrical specification, refer to the Stratix® 10 Device Datasheet .

Connect these pins according to the I/O interface standard used in your design. To enable the 3.3 V I/O bank, you must provide 3.0 V or 3.3 V power to VCCIO3C and 1.8 V power to VCCIO3D. For unused I/O pins, leave the pins as NC.

Tie VREFB3CN0 to GND.