CorePCIF v4.0
Electrical Requirements
Electrical Requirements
CorePCIF supports both the 3.3 V and 5.0 V PCI specifications when operating at 33 MHz; at 66 MHz, the PCI bus
must operate at 3.3 V. The SX-A and RTSX-S families have I/O buffers that directly support 5.0 V operation. Other
families in 5.0 V PCI environments may require external voltage level translator devices, or may not be supported. See
Table 7 for details.
CorePCIF also supports CardBus functionality. Contact Actel Technical Support for advice on silicon that supports the
CardBus electrical specifications.
Table 7 · Supported Electrical Environments
Clock Speed
Family
Fusion
IGLOO/e
ProASIC3/E/L
PCI Voltage with
Direct FPGA Connection
3.3
3.3
3.3
PCI Voltage with
Level Translators
3.3 and 5.0
3.3 and 5.0
3.3 and 5.0
ProASIC
PLUS
3.3
3.3 and 5.0
33 MHz
66 MHz
RTAX-S
Axcelerator
RTSX-S
SX-A
SmartFusion2
Fusion
IGLOO/e
ProASIC3/E
ProASIC PLUS
RTAX-S
Axcelerator
RTSX-S
SX-A
SmartFusione
v4.0
3.3
3.3
3.3 and 5.0
3.3 and 5.0
3.3
3.3
3.3
3.3
Not supported
3.3
3.3
Not supported
Not supported
3.3
3.3 and 5.0
3.3 and 5.0
3.3 and 5.0
3.3 and 5.0
3.3 and 5.0
3.3
3.3
3.3
Not supported
3.3
3.3
Not supported
Not supported
3.3 and 5.0
13
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