Agilex™ 7 General-Purpose I/O User Guide: F-Series and I-Series

ID 683780
Date 7/08/2024
Public

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2.3.1.3. GPIO Programmable IOE Features Assignment Names and Settings

Table 8.   GPIO Programmable IOE Features Assignment Names and SettingsThis table lists the programmable IOE features assignment names and values that you can specify in the Quartus® Prime Assignment Editor and Pin Planner tools.
Feature Assignment Name Supported Values
Slew rate control Slew Rate
  • 0—slow
  • 1—medium
  • 2—fast (default)
I/O delay
  • Input Delay Chain Setting
  • Output Delay Chain Setting
Refer to the device data sheet.
Bus-hold4 Enable Bus-Hold Circuitry
  • On
  • Off (default)
Weak pull-up resistor5 Weak Pull-Up Resistor
  • On
  • Off (default)
Pre-emphasis Programmable Pre-emphasis
  • 0—off
  • 1—low power (default)
  • 2—constant Z
De-emphasis Programmable De-emphasis
  • HIGH
  • HIGH CONST Z
  • LOW
  • LOW CONST Z
  • MEDIUM
  • MEDIUM CONST Z
  • OFF (default)
Differential output voltage Programmable Differential Output Voltage (VOD)
  • 0—low
  • 1—medium low
  • 2—medium high (default)
  • 3—high
4 Not available if you assign Weak Pull-Up Resistor.
5 Not available if you assign Enable Bus-Hold Circuitry.