Intel® Stratix® 10 General Purpose I/O User Guide

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ID 683518
Date 9/29/2022
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Document Table of Contents
Document Table of Contents x
1. Intel® Stratix® 10 I/O Overview 2. Intel® Stratix® 10 I/O Architecture and Features 3. Intel® Stratix® 10 I/O Design Considerations 4. Intel® Stratix® 10 I/O Implementation Guides 5. GPIO Intel® FPGA IP Reference 6. Document Revision History for Intel® Stratix® 10 General Purpose I/O User Guide
1. Intel® Stratix® 10 I/O Overview x
1.1. Intel® Stratix® 10 I/O and Differential I/O Buffers 1.2. Intel® Stratix® 10 I/O Migration Support
2. Intel® Stratix® 10 I/O Architecture and Features x
2.1. I/O Standards and Voltage Levels in Intel® Stratix® 10 Devices 2.2. I/O Element Structure in Intel® Stratix® 10 Devices 2.3. Programmable IOE Features in Intel® Stratix® 10 Devices 2.4. On-Chip I/O Termination in Intel® Stratix® 10 Devices 2.5. External I/O Termination for Intel® Stratix® 10 Devices
2.1. I/O Standards and Voltage Levels in Intel® Stratix® 10 Devices x
2.1.1. Intel® Stratix® 10 I/O Standards Support 2.1.2. Intel® Stratix® 10 I/O Standards Voltage Support
2.2. I/O Element Structure in Intel® Stratix® 10 Devices x
2.2.1. I/O Bank Architecture in Intel® Stratix® 10 Devices 2.2.2. I/O Buffer and Registers in Intel® Stratix® 10 Devices
2.3. Programmable IOE Features in Intel® Stratix® 10 Devices x
2.3.1. Programmable Output Slew Rate Control 2.3.2. Programmable IOE Delay 2.3.3. Programmable Open-Drain Output 2.3.4. Programmable Bus Hold 2.3.5. Programmable Pull-Up Resistor 2.3.6. Programmable Pre-Emphasis 2.3.7. Programmable Differential Output Voltage 2.3.8. Programmable Current Strength
2.4. On-Chip I/O Termination in Intel® Stratix® 10 Devices x
2.4.1. RS OCT without Calibration in Intel® Stratix® 10 Devices 2.4.2. RS OCT with Calibration in Intel® Stratix® 10 Devices 2.4.3. RT OCT with Calibration in Intel® Stratix® 10 Devices 2.4.4. Dynamic OCT 2.4.5. Differential Input RD OCT 2.4.6. OCT Calibration Block in Intel® Stratix® 10 Devices
2.5. External I/O Termination for Intel® Stratix® 10 Devices x
2.5.1. Single-Ended I/O Termination 2.5.2. Differential I/O Termination for Intel® Stratix® 10 Devices
2.5.2. Differential I/O Termination for Intel® Stratix® 10 Devices x
2.5.2.1. Differential HSTL, SSTL, HSUL, and POD Termination 2.5.2.2. LVDS, RSDS, and Mini-LVDS Termination 2.5.2.3. LVPECL Termination
3. Intel® Stratix® 10 I/O Design Considerations x
3.1. Guideline: VREF Sources and VREF Pins 3.2. Guideline: Observe Device Absolute Maximum Rating for 3.0 V Interfacing 3.3. Guideline: Voltage-Referenced and Non-Voltage Referenced I/O Standards 3.4. Guideline: Do Not Drive I/O Pins During Power Sequencing 3.5. Guideline: Intel® Stratix® 10 I/O Buffer During Power Up, Configuration, and Power Down 3.6. Guideline: Maximum DC Current Restrictions 3.7. Guideline: Use Only One Voltage for All 3 V I/O Banks 3.8. Guideline: I/O Standards Limitation for Intel® Stratix® 10 TX 400 3.9. Guideline: I/O Standards Limitation for Intel® Stratix® 10 GX 400 and SX 400
4. Intel® Stratix® 10 I/O Implementation Guides x
4.1. GPIO Intel® FPGA IP 4.2. Verifying Resource Utilization and Design Performance 4.3. GPIO Intel® FPGA IP Timing 4.4. GPIO Intel® FPGA IP Design Examples 4.5. Verifying Pin Migration Compatibility 4.6. IP Migration to the GPIO IP Core
4.1. GPIO Intel® FPGA IP x
4.1.1. Release Information for GPIO Intel® FPGA IP 4.1.2. GPIO Intel® FPGA IP Data Paths 4.1.3. Register Packing
4.1.2. GPIO Intel® FPGA IP Data Paths x
4.1.2.1. Input Path 4.1.2.2. Output and Output Enable Paths
4.3. GPIO Intel® FPGA IP Timing x
4.3.1. Timing Components 4.3.2. Delay Elements 4.3.3. Timing Analysis 4.3.4. Timing Closure Guidelines
4.3.3. Timing Analysis x
4.3.3.1. Single Data Rate Input Register 4.3.3.2. Full-Rate or Half-Rate DDIO Input Register 4.3.3.3. Single Data Rate Output Register 4.3.3.4. Full-Rate or Half-Rate DDIO Output Register
4.4. GPIO Intel® FPGA IP Design Examples x
4.4.1. GPIO Intel® FPGA IP Synthesizable Intel® Quartus® Prime Design Example 4.4.2. GPIO Intel® FPGA IP Simulation Design Example
4.6. IP Migration to the GPIO IP Core x
4.6.1. Migrating Your ALTDDIO_IN, ALTDDIO_OUT, ALTDDIO_BIDIR, and ALTIOBUF IP Cores 4.6.2. Guideline: Swap datain_h and datain_l Ports in Migrated IP
5. GPIO Intel® FPGA IP Reference x
5.1. GPIO Intel® FPGA IP Parameter Settings 5.2. GPIO Intel® FPGA IP Interface Signals
5.2. GPIO Intel® FPGA IP Interface Signals x
5.2.1. Shared Signals 5.2.2. Data Bit-Order for Data Interface 5.2.3. Data Interface Signals and Corresponding Clocks
1. Intel® Stratix® 10 I/O Overview
2. Intel® Stratix® 10 I/O Architecture and Features
3. Intel® Stratix® 10 I/O Design Considerations
4. Intel® Stratix® 10 I/O Implementation Guides
5. GPIO Intel® FPGA IP Reference
6. Document Revision History for Intel® Stratix® 10 General Purpose I/O User Guide

5.1. GPIO Intel® FPGA IP Parameter Settings

You can set the parameter settings for the GPIO IP in the Intel® Quartus® Prime software. There are three groups of options: General, Buffer, and Registers.
Table 25.   GPIO IP Parameters—General
Parameter Condition Allowed Values Description
Data Direction —
  • Input
  • Output
  • Bidir

Specifies the data direction for the GPIO.

Data width —

1 to 128

Specifies the data width.

Use legacy top-level port names —
  • On
  • Off

Use same port names as in Stratix® V, Arria® V, and Cyclone® V devices.

For example, dout becomes dataout_h and dataout_l, and din becomes datain_h and datain_l.

Note: The behavior of these ports are different than in the Stratix® V, Arria® V, and Cyclone® V devices. For the migration guideline, refer to the related information.
Table 26.   GPIO IP Parameters—Buffer
Parameter Condition Allowed Values Description
Use differential buffer —
  • On
  • Off

If turned on, enables differential I/O buffers.

Use pseudo differential buffer
  • Data Direction = Output
  • Use differential buffer = On
  • On
  • Off

If turned on in output mode, enables pseudo differential output buffers.

This option is automatically turned on for bidirectional mode if you turn on Use differential buffer.

Enable output enable port Data Direction = Output
  • On
  • Off

If turned on, enables user input to the OE port. This option is automatically turned on for bidirectional mode.

In Intel® Stratix® 10 devices, each 3 V I/O bank supports only two output enables (OE) for its eight single-ended I/Os.

Table 27.   GPIO IP Parameters—Registers
Parameter Condition Allowed Values Description
Register mode —
  • None
  • Simple register
  • DDIO

Specifies the register mode for the GPIO IP:

  • None—specifies a simple wire connection from/to the buffer.
  • Simple register—specifies that the DDIO is used as a simple register in single data-rate mode (SDR). The Fitter may pack this register in the I/O.
  • DDIO— specifies that the IP core uses the DDIO.

If you use an I/O standard supported only by the 3 V I/O banks, select None.

Enable synchronous clear / preset port Register mode = DDIO
  • None
  • Clear
  • Preset

Specifies how to implement synchronous reset port.

  • None—Disables synchronous reset port.
  • Clear—Enables the SCLR port for synchronous clears.
  • Preset—Enables the SSET port for synchronous preset.
Enable asynchronous clear / preset port Register mode = DDIO
  • None
  • Clear
  • Preset

Specifies how to implement asynchronous reset port.

  • None—Disables asynchronous reset port.
  • Clear—Enables the ACLR port for asynchronous clears.
  • Preset—Enables the ASET port for asynchronous preset.

ACLR and ASET signals are active high.

Enable clock enable ports Register mode = DDIO
  • On
  • Off
  • On—exposes the clock enable (CKE) port to allow you to control when data is clocked in or out. This signal prevents data from being passed through without your control.
  • Off—clock enable port is not exposed and data always pass through the register automatically.
Separate input/output Clocks
  • Data Direction = Bidir
  • Register mode = Simple register or DDIO
  • On
  • Off
 If turned on, enables separate clocks (CK_IN and CK_OUT) for the input and output paths in bidirectional mode.
Related Information
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