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EP2SGX60CF780C4N Datasheet, PDF (135/316 Pages) Altera Corporation – Support for numerous single-ended and differential I/O standards | |||
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Stratix II GX Architecture
â Differential SSTL-2 class I and II
â 1.2-V HSTL class I and II
â 1.5-V HSTL class I and II
â 1.8-V HSTL class I and II
â SSTL-2 class I and II
â SSTL-18 class I and II
Table 2â33 describes the I/O standards supported by Stratix II GX
devices.
Table 2â33. Stratix II GX Supported I/O Standards
I/O Standard
Type
Input Reference Output Supply Board Termination
Voltage (VREF) (V) Voltage (VCCIO) (V) Voltage (VTT) (V)
LVTTL
Single-ended
â
3.3
â
LVCMOS
Single-ended
â
3.3
â
2.5 V
Single-ended
â
2.5
â
1.8 V
Single-ended
â
1.8
â
1.5-V LVCMOS
Single-ended
â
1.5
â
3.3-V PCI
Single-ended
â
3.3
â
3.3-V PCI-X mode 1
Single-ended
â
3.3
â
LVDS
Differential
â
2.5 (3)
â
LVPECL (1)
Differential
â
3.3
â
HyperTransport technology Differential
â
2.5 (3)
â
Differential 1.5-V HSTL
class I and II (2)
Differential
0.75
1.5
0.75
Differential 1.8-V HSTL
class I and II (2)
Differential
0.90
1.8
0.90
Differential SSTL-18 class I Differential
and II (2)
0.90
1.8
0.90
Differential SSTL-2 class I Differential
and II (2)
1.25
2.5
1.25
1.2-V HSTL(4)
Voltage-referenced
0.6
1.2
0.6
1.5-V HSTL class I and II Voltage-referenced
0.75
1.5
0.75
1.8-V HSTL class I and II Voltage-referenced
0.9
1.8
0.9
SSTL-18 class I and II
Voltage-referenced
0.90
1.8
0.90
Altera Corporation
October 2007
2â127
Stratix II GX Device Handbook, Volume 1
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