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

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ID 683518
Date 7/07/2021
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2.1.2. Intel® Stratix® 10 I/O Standards Voltage Support

Intel® Stratix® 10 devices in all packages can interface with systems of different supply voltages.
  • The I/O buffers are powered by VCC, VCCPT and VCCIO.
  • Each I/O bank has its own VCCIO supply and supports only one VCCIO voltage.
  • In all LVDS I/O banks, you can use any of the listed VCCIO voltages except 2.5 V, 3.0 V, and 3.3 V. However, LVDS I/O bank 3D of the HF35 package of the Intel® Stratix® 10 GX 400 and SX 400 devices supports only 1.8 V VCCIO.
  • The 2.5 V and 3.0 V VCCIO voltages are supported only on the 3 V I/O banks.
  • The 3.3 V VCCIO voltages are supported only on I/O bank 3C of the HF35 package of the Intel® Stratix® 10 GX 400 and SX 400 devices. I/O bank 3C of these devices also supports 3.0 V.
  • For the maximum and minimum input voltages allowed, refer to the device datasheet.
Table 3.   Intel® Stratix® 10 Devices I/O Standards Voltage LevelsThis table lists the typical power supplies for each supported I/O standards in Intel® Stratix® 10 devices.
I/O Standard VCCIO(V)

VCCPT(V)

(Pre-Driver Voltage)

VREF(V)

(Input Ref Voltage)

VTT(V)

(Board Termination Voltage)

Input8 Output
3.3 V LVTTL/3.3 V LVCMOS 9 3.3 3.3 1.8
3.0 V LVTTL/3.0 V LVCMOS 3.0 3.0 1.8
2.5 V LVCMOS 3.0/2.5 2.5 1.8
1.8 V LVCMOS 1.8 1.8 1.8
1.5 V LVCMOS 1.5 1.5 1.8
1.2 V LVCMOS 1.2 1.2 1.8
SSTL-18 Class I and Class II VCCPT 1.8 1.8 0.9 0.9
SSTL-15 Class I and Class II VCCPT 1.5 1.8 0.75 0.75
SSTL-15 VCCPT 1.5 1.8 0.75 0.75
SSTL-135 VCCPT 1.35 1.8 0.675 0.675
SSTL-125 VCCPT 1.25 1.8 0.625 0.625
SSTL-12 VCCPT 1.2 1.8 0.6 0.6
POD12 VCCPT 1.2 1.8 0.84 1.2
1.8 V HSTL Class I and Class II VCCPT 1.8 1.8 0.9 0.9
1.5 V HSTL Class I and Class II VCCPT 1.5 1.8 0.75 0.75
1.2 V HSTL Class I and Class II VCCPT 1.2 1.8 0.6 0.6
HSUL-12 VCCPT 1.2 1.8 0.6
Differential SSTL-18 Class I and Class II VCCPT 1.8 1.8 0.9
Differential SSTL-15 Class I and Class II VCCPT 1.5 1.8 0.75
Differential SSTL-15 VCCPT 1.5 1.8 0.75
Differential SSTL-135 VCCPT 1.35 1.8 0.675
Differential SSTL-125 VCCPT 1.25 1.8 0.625
Differential SSTL-12 VCCPT 1.2 1.8 0.6
Differential POD12 VCCPT 1.2 1.8 1.2
Differential 1.8 V HSTL Class I and Class II VCCPT 1.8 1.8 0.9
Differential 1.5 V HSTL Class I and Class II VCCPT 1.5 1.8 0.75
Differential 1.2 V HSTL Class I and Class II VCCPT 1.2 1.8 0.6
Differential HSUL-12 VCCPT 1.2 1.8
LVDS 10 VCCPT 1.8 1.8
Mini-LVDS 10 VCCPT 1.8 1.8
RSDS10 VCCPT 1.8 1.8
LVPECL (Differential clock input only) VCCPT 1.8
8 Input for the SSTL, HSTL, Differential SSTL, Differential HSTL, POD, Differential POD, LVDS, RSDS, Mini-LVDS, LVPECL, HSUL, and Differential HSUL are powered by VCCPT
9 Available only on I/O bank 3C of the HF35 package of the Intel® Stratix® 10 GX 400 and SX 400 devices.
10 Supported only on dedicated clock pin in I/O banks 3A and 3D of the Intel® Stratix® 10 TX 400, GX 400, and SX 400 devices.

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