Intel® Arria® 10 Core Fabric and General Purpose I/Os Handbook

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Date 5/27/2022
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5.2.3. I/O Standards Voltage Levels in Intel® Arria® 10 Devices

Intel® Arria® 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 I/O banks, you can use any of the listed VCCIO voltages except 2.5 V and 3.0 V.
  • The 2.5 V and 3.0 V VCCIO voltages are supported only on the 3 V I/O banks.
  • For the maximum and minimum input voltages allowed, refer to the device datasheet.
Table 33.   Intel® Arria® 10 I/O Standards Voltage LevelsThis table lists the typical power supplies for each supported I/O standards in Intel® Arria® 10 devices.
I/O Standard VCCIO(V)

VCCPT(V)

(Pre-Driver Voltage)

VREF(V)

(Input Ref Voltage)

VTT(V)

(Board Termination Voltage)

Input6 Output
3.0 V LVTTL/3.0 V LVCMOS 3.0/2.5 7 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, SSTL-135 Class I and Class II VCCPT 1.35 1.8 0.675
SSTL-125, SSTL-125 Class I and Class II VCCPT 1.25 1.8 0.625
SSTL-12, SSTL-12 Class I and Class II VCCPT 1.2 1.8 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, SSTL-135 Class I and Class II VCCPT 1.35 1.8 0.675
Differential SSTL-125, SSTL-125 Class I and Class II VCCPT 1.25 1.8 0.625
Differential SSTL-12, SSTL-12 Class I and Class II 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 VCCPT 1.8 1.8
Mini-LVDS VCCPT 1.8 1.8
RSDS VCCPT 1.8 1.8
LVPECL (Differential clock input only) VCCPT 1.8
6 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
7 When using a 3.0 V LVTTL /3.0 V LVCMOS I/O standard with a 2.5 V VCCIO voltage, input signals that exceed 2.5 V will be clamped as the clamping diode is turned on.

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