2–10
Reference Manual
Altera Corporation
Stratix II GX PCI Express Development Board
August 2006
Featured Device
Table 2–3
summarizes Stratix II GX device I/O requirements. Clocks are
noted in a separate column because they sometimes use dedicated I/O
pins or have special needs.
Table 2–3. Stratix II GX Device I/O Requirements Summarized
Function
I/O Type
I/O Count
Clocks
PCIe edge connector
(x8 electrical interface)
1.2-V/1.5-V pseudo
current mode logic
(PCML)
8 XCVR channels
1 LVDS in
Small-form pluggable (SFP)
expansion ports
(2 expansion connectors)
1.2-V/1.5-V PCML
2 XCVR channels
—
High-speed mezzanine card, port A
(XCVRs, LVDS, CMOS)
1.2-V/1.5-V PCML
6 XCVR channels
1 CMOS in
1 CMOS out
2 LVDS in
2 LVDS out
2.5-V CMOS
2.5-V LVDS
84
—
High-speed mezzanine card, port B
(XCVRs, LVDS, CMOS)
1.2-V/1.5-V PCML
4 XCVR channels
(1)
1 CMOS in
1 CMOS out
2 LVDS in
2 LVDS out
2.5-V CMOS
2.5-V LVDS
84
—
Gigabit Ethernet (GigE) physical
(PHY) layer
(12-bit,125-MHz Gigabit medium
independent interface [GMII])
2.5-V CMOS
30
1 Out
1 In
DDR2 memory
(72-bit, 333-MHz interface)
1.8-V SSTL
122
—
Quad data rate (QDRII) memory
(36-bit, 300-MHz interface)
1.8-V HSTL
101
—
Flash
2.5-V CMOS
70
—
Push buttons
2.5-V CMOS
3
—
DIP switches
2.5-V CMOS
8
—
LEDs
2.5-V CMOS
18
—
EPLL
clock inputs
2.5-V CMOS
—
2 In
REFCLK
inputs
LVDS
—
3 In
Note to
Table 2–3
:
(1)
High-speed mezzanine card, port B: Four XCVR channels are only available with EP2SGX130GF1508 devices.