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

ID 683665
Date 10/18/2023
Public
Document Table of Contents

5.6. Programmable IOE Features in Stratix® V Devices

Table 38.  Summary of Supported Stratix® V Programmable IOE Features and Settings
Feature Setting Assignment Name Supported I/O Standards
Slew Rate Control7
  • 0 (Slow)
  • 1 (Fast). Default is 1.
Slew Rate
  • 3.3V LVTTL
  • 1.2/1.5/1.8/2.5/3.3 LVCMOS
  • SSTL-2/SSTL-18/SSTL-15/SSTL-12
  • 1.8/1.5/1.2V HSTL
  • Differential SSTL-2/Differential SSTL-18/Differential SSTL-15/Differential SSTL-12
  • Differential 1.2/1.5/ 1.8V HSTL
Programmable Output Buffer Delay
  • 0 ps (Default)
  • 50 ps
  • 100 ps
  • 150 ps

Output Buffer Delay

  • 3.3V LVTTL
  • 1.2/1.5/1.8/2.5/3.3 LVCMOS
  • SSTL-2/SSTL-18/SSTL-15/SSTL-135/SSTL-125/SSTL-12
  • 1.8/1.5/1.2V HSTL
  • HSUL-12
  • Differential SSTL-2/Differential SSTL-18/Differential SSTL-15/Differential SSTL-135/Differential SSTL-125/Differential SSTL-12
  • Differential 1.2/1.5/ 1.8V HSTL
  • Differential HSUL-12
Open-Drain Output 8
  • On
  • Off (default)
  • 3.3V LVTTL
  • 1.2/1.5/1.8/2.5/3.3 LVCMOS
  • SSTL-2/SSTL-12/SSTL-18/SSTL-15/SSTL-135/SSTL-125
  • 1.8/1.5/1.2V HSTL
  • HSUL-12
Bus-Hold 9
  • On
  • Off (default)
Enable Bus-Hold Circuitry
  • 3.3V LVTTL
  • 1.2/1.5/1.8/2.5/3.3 LVCMOS
  • SSTL-2/SSTL-12/SSTL-18/SSTL-15/SSTL-135/SSTL-125
  • 1.8/1.5/1.2V HSTL
  • HSUL-12
Pull-up Resistor 10
  • On
  • Off (default)
Weak Pull-Up Resistor
  • 3.3V LVTTL
  • 1.2/1.5/1.8/2.5/3.3 LVCMOS
  • SSTL-2/SSTL-12/SSTL-18/SSTL-15/SSTL-135/SSTL-125
  • 1.8/1.5/1.2V HSTL
  • HSUL-12
Pre-Emphasis
  • 0 (disabled)
  • 1 (enabled). Default is 1.
Programmable Pre-emphasis
  • LVDS
  • RSDS
  • Mini-LVDS
Differential Output Voltage
  • 0 (low)
  • 1 (medium low)
  • 2 (medium high)
  • 3 (high). Default is 1
Programmable Differential Output Voltage (VOD)
  • LVDS
  • RSDS
  • Mini-LVDS
7 Disabled if you use the RS OCT feature.
8 Open drain feature can be enabled using OPNDRN primitive.
9 Disabled if you use the pull-up resistor feature.
10 Disabled if you use the bus-hold feature.