2–1

2 PCI2250 Features

The PCI2250 provides the following features.

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Complies fully with the PCI Local Bus Specification Revision 2.2

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Complies fully with the PCI-to-PCI Bridge Specification Revision 1.1

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Architecture configurable for PCI Bus Power Management Interface Specification

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Supports two 32-bit, 33-MHz PCI buses

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3.3-V core logic with universal PCI interfaces compatible with 3.3-V and 5-V PCI signaling environments

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Provides concurrent primary and secondary bus operation

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Provides five secondary PCI bus clock outputs

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Provides internal arbitration for up to four external secondary bus masters with programmable control

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Provides external arbiter option

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Supports sustained pass-through bandwidth of 132 MBps

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Supports PCI clockrun on both buses

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Supports CompactPCI

 hot-swap

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Supports bus locking

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Provides two additional decode windows that can be programmed as either memory or I/O windows

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Secondary positive, negative, and subtractive decode

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Independent read and write buffers for each direction

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Provides VGA/palette, memory, I/O, and subtractive decoding options

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Packaged in 176-terminal TQFP or 160-terminal PQFP

CompactPCI is a trademark of PCIMG – PCI Industrial Computer Manufacturers Group, Inc.

Other trademarks are the property of their respective owners.