Arria® V Device Handbook: Volume 1: Device Interfaces and Integration

ID 683213
Date 10/18/2023
Public
Document Table of Contents

5.8. Programmable IOE Features in Arria V Devices

Table 49.  Summary of Supported Arria V Programmable IOE Features and Settings
Feature Setting Assignment Name Supported I/O Standards

Supported in HPS I/O

(SoC Devices Only)

Slew Rate Control16
  • 0 (Slow)
  • 1 (Fast). Default is 1.
Slew Rate
  • 3.0/3.3V LVTTL
  • 1.2/1.5/1.8/2.5/3.0/3.3 LVCMOS
  • SSTL-2/SSTL-18/SSTL-15
  • 1.8/1.5/1.2V HSTL
  • 3.0V PCI
  • 3.0V PCI-X
  • Differential SSTL-2/Differential SSTL-18/Differential SSTL-15
  • Differential 1.2/1.5/1.8V HSTL
Yes
Programmable Output Buffer Delay
  • 0 ps (Default)
  • 50 ps
  • 100 ps
  • 150 ps

Output Buffer Delay

  • 3.0/3.3-V LVTTL
  • 1.2/1.5/1.8/2.5/3.0/3.3 LVCMOS
  • SSTL-2, SSTL-18, SSTL-15, SSTL-135, SSTL-125
  • 1.8/1.5/1.2 V HSTL
  • HSUL-12
  • 3.0V PCI
  • 3.0V PCI-X
  • Differential SSTL-2/Diff-SSTL-18/Differential SSTL-15/Differential SSTL-135/Differential SSTL-125
  • Differential 1.2/1.5/1.8V HSTL
  • Differential 1.2-V HSUL
Open-Drain Output17
  • On
  • Off (Default)
  • 3.0/3.3V LVTTL
  • 1.2/1.5/1.8/2.5/3.0/3.3 LVCMOS
  • SSTL-2/SSTL-18/SSTL-15/SSTL-135/SSTL-125
  • 1.8/1.5/1.2V HSTL
  • HSUL-12
  • 3.0V PCI
  • 3.0V PCI-X
Yes
Bus-Hold18
  • On
  • Off (Default)
Enable Bus-Hold Circuitry
  • 3.0/3.3V LVTTL
  • 1.2/1.5/1.8/2.5/3.0/3.3 LVCMOS
  • SSTL-2/SSTL-18/SSTL-15/SSTL-135/SSTL-125
  • 1.8/1.5/1.2V HSTL
  • HSUL-12
  • 3.0V PCI
  • 3.0V PCI-X
Yes
Weak Pull-up Resistor19
  • On
  • Off (Default)
Weak Pull-Up Resistor
  • 3.0/3.3V LVTTL
  • 1.2/1.5/1.8/2.5/3.0/3.3 LVCMOS
  • SSTL-2/SSTL-18/SSTL-15/SSTL-135/SSTL-125
  • 1.8/1.5/1.2V HSTL
  • HSUL-12
  • 3.0V PCI
  • 3.0V PCI-X
Yes
Pre-Emphasis
  • 0 (disabled)
  • 1 (enabled). Default is 1.
Programmable Pre-emphasis
  • LVDS
  • RSDS
  • Mini-LVDS
Differential Output Voltage
Arria V GX, GT, SX, and ST:
  • 0 (low)
  • 1 (medium)
  • 2 (high). Default is 1.
Arria V GZ:
  • 0 (low)
  • 1 (medium low)
  • 2 (medium high)
  • 3 (high). Default is 1.
Programmable Differential Output Voltage (VOD)
  • LVDS
  • RSDS
  • Mini-LVDS

On-Chip Clamp Diode 20

(GX, GT, SX, and ST only)

  • On
  • Off (Default)
Clamping Diode
  • 3.0/3.3V LVTTL
  • 3.0/3.3 LVCMOS
  • 3.0V PCI
  • 3.0V PCI-X
Yes
Note: The on-chip clamp diode is available on all general purpose I/O (GPIO) pins in the Arria® V GX, GT, SX, and ST device variants.
16 Disabled if you use the RS OCT feature.
17 Open drain feature can be enabled using the OPNDRN primitive.
18 Disabled if you use the weak pull-up resistor feature.
19 Disabled if you use the bus-hold feature.
20 PCI clamp diode is enabled by default for 3.0 V PCI and 3.0 V PCI-X standards.