The following table displays all of the I/O standards available for your Axcelerator device. Not all I/O standards are compatible with each other. Two I/O standards are compatible if they have identical VCCI values and if both of them need a VREF and their VREF values are identical.
Use the table below to determine which I/O standards are compatible with which for your device.
|
I/O Standard |
LVTTL |
LVCMOS 2.5 |
LVCMOS 1.8 |
LVCMOS 1.5 |
PCI,
PCIX |
GTL+ 3.3 |
GTL+ 2.5 |
HSTL Class I |
SSTL2 Class I and II |
SSTL3 Class I and II |
LVDS |
LVPECL |
|
LVTTL |
X |
|
|
|
X |
X |
|
|
|
X |
|
X |
|
LVCMOS 2.5 |
|
X |
|
|
|
|
|
|
X |
|
X |
|
|
LVCMOS 1.8 |
|
|
X |
|
|
|
|
|
|
|
|
|
|
LVCMOS 1.5 |
|
|
|
X |
|
|
|
X |
|
|
|
|
|
PCI, PCIX |
X |
|
|
|
X |
|
|
|
|
X |
|
|
|
GTL+ 3.3 |
X |
|
|
|
|
X |
|
|
|
|
|
|
|
GTL+ 2.5 |
|
X |
|
|
|
|
X |
|
|
|
|
|
|
HSTL Class I |
|
|
|
X |
|
|
|
X |
|
|
|
|
|
SSTL2 Class I and II |
|
X |
|
|
|
|
|
|
X |
|
|
|
|
SSTL3 Class I and II |
X |
|
|
|
X |
|
|
|
|
X |
|
|
|
LVDS |
|
X |
|
|
|
|
|
|
|
|
X |
|
|
LVPECL |
X |
|
|
|
|
|
|
|
|
|
|
X |