Stratix II and Stratix II GX I/O Banks
Table 4–4. Stratix II and Stratix II GX I/O Standards and Voltage Levels (Part 2 of 3) Note (1)
Stratix II and Stratix II GX
VCCIO (V)
VREF (V)
Input
VTT (V)
Input Operation
Top and Left and
Output Operation
I/O Standard
Top and
Bottom I/O
Banks
Left and
Right I/O
Banks(3)
Termination
Bottom I/O
Banks
Right I/O
Banks (3)
2.5 V
3.3/2.5
1.8/1.5
1.8/1.5
3.3
3.3/2.5
1.8/1.5
1.8/1.5
NA
2.5
1.8
1.5
3.3
3.3
2.5
2.5
1.8
1.8
1.8
1.8
1.5
1.5
1.2
2.5
2.5
1.8
1.5
NA
NA
2.5
2.5
1.8
NA
1.8
NA
1.5
NA
NA
2.5
NA
NA
NA
NA
1.8 V
1.5 V
NA
NA
3.3-V PCI
NA
NA
3.3-V PCI-X
3.3
NA
NA
NA
SSTL-2 Class I
SSTL-2 Class II
SSTL-18 Class I
SSTL-18 Class II
1.8-V HSTL Class I
1.8-V HSTL Class II
1.5-V HSTL Class I
1.5-V HSTL Class II
1.2-V HSTL(4)
2.5
2.5
1.25
1.25
0.90
0.90
0.90
0.90
0.75
0.75
0.6
1.25
1.25
0.90
0.90
0.90
0.90
0.75
0.75
NA
2.5
2.5
1.8
1.8
1.8
1.8
1.8
1.8
1.8
1.8
1.5
1.5
1.5
1.5
1.2
NA
Differential SSTL-2
Class I
2.5
2.5
1.25
1.25
Differential SSTL-2
Class II
2.5
2.5
1.8
1.8
1.8
1.8
1.5
1.5
2.5
2.5
1.8
1.8
1.8
1.8
1.5
1.5
3.3
2.5
1.8
NA
NA
NA
NA
NA
2.5
1.25
0.90
0.90
0.90
0.90
0.75
0.75
NA
1.25
0.90
0.90
0.90
0.90
0.75
0.75
NA
Differential SSTL-18
Class I
1.8
Differential SSTL-18
Class II
1.8
1.8-V differential
HSTL Class I
1.8
1.8-V differential
HSTL Class II
1.8
1.5
1.5-V differential
HSTL Class I
1.5-V differential
HSTL Class II
1.5
LVDS (2)
3.3/2.5/1.8/1.5
4–26
Altera Corporation
January 2008
Stratix II Device Handbook, Volume 2
ALTERA [ ALTERA CORPORATION ]
