|The EP423 64-bit PCI-X host bridge core is optimized to operate in both PCI mode and PCI-X mode. The user interface is a highly efficient and flexible user interface which provides for easy integration with other user logic. This PCI-X core automatically switch between PCI and PCI-X protocol based on the system environment. It supports both PCI version 2.3 and PCI-X version 1.0b.
The EP423 64-bit PCI-X host bridge core is designed so that user interface can operate at any clock speed independent of the PCI bus speed. The user interface clock and PCI bus clock can be synchronous our asynchronous to each other.