Altera Corporation
4–7
June 2006
Stratix Device Handbook, Volume 2
Selectable I/O Standards in Stratix & Stratix GX Devices
3.3-V PCI-X 1.0 Local Bus - PCI-SIG PCI-X Local Bus
Specification Revision 1.0a
The PCI-X 1.0 standard is used for applications that interface to the PCI
local bus. The standard enables the design of systems and devices that
operate at clock speeds up to 133 MHz, or 1 gigabit per second (Gbps) for
a 64-bit bus. The PCI-X 1.0 protocol enhancements enable devices to
operate much more efficiently, providing more usable bandwidth at any
clock frequency. By using the PCI-X 1.0 standard, devices can be designed
to meet PCI-X 1.0 requirements and operate as conventional 33- and
66-MHz PCI devices when installed in those systems. This standard
requires 3.3-V VCCIO. Stratix and Stratix GX devices are fully compliant
with the 3.3-V PCI-X Specification Revision 1.0a and meet the 133-MHz
operating frequency and timing requirements. The 3.3-V PCI standard
does not require input reference voltages or board terminations. Stratix
and Stratix GX devices support both input and output levels.
3.3-V Compact PCI Bus - PCI SIG PCI Local Bus Specification
Revision 2.3
The Compact PCI local bus specification is used for applications that
interface to the PCI local bus. It follows the PCI Local Bus Specification
Revision 2.3 plus additional requirements in PCI Industrial Computers
Manufacturing Group (PICMG) specifications PICMG 2.0 R3.0,
CompactPCI specification, and the hot swap requirements in PICMG 2.1
R2.0, CompactPCI Hot Swap Specification. This standard has similar
electrical requirements as LVTTL and requires 3.3-V VCCIO. Stratix and
Stratix GX devices are compliant with the Compact PCI electrical
requirements. The 3.3-V PCI standard does not require input reference
voltages or board terminations. Stratix and Stratix GX devices support
both input and output levels.
3.3-V 1× AGP - Intel Corporation Accelerated Graphics Port
Interface Specification 2.0
The AGP interface is a platform bus specification that enables high-
performance graphics by providing a dedicated high-speed port for the
movement of large blocks of 3-dimensional texture data between a PC's
graphics controller and system memory. The 1
× AGP I/O standard is a
single-ended standard used for 3.3-V graphics applications. The 1
× AGP
input standard specifies an input voltage range of
–0.5 V
≤VI ≤VCCIO + 0.5 V. The 1× AGP standard does not require input
reference voltages or board terminations. Stratix and Stratix GX devices
support both input and output levels.