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FW80321M400 Datasheet(PDF) 9 Page - Intel Corporation |
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FW80321M400 Datasheet(HTML) 9 Page - Intel Corporation |
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9 / 54 page  Intel ® 80321 I/O Processor Introduction Datasheet January 2005 9 1.2 About the Intel® 80321 I/O Processor The 80321 is a single-function device that integrates the Intel XScale ® core with intelligent peripherals, including a PCI bus application bridge. The 80321 consolidates into a single system: • Intel XScale® core • PCI - Local Memory Bus Address Translation Unit • Messaging Unit • Direct Memory Access (DMA) Controller • Peripheral Bus Interface Unit • Integrated Memory Controller • Performance Monitor • Application Accelerator • Two I2C Bus Interface Units • Synchronous Serial Port Unit • Eight General Purpose Input Output (GPIO) ports It is an integrated processor that addresses the needs of intelligent I/O applications and helps reduce intelligent I/O system costs. The PCI Bus is an industry standard, high performance, low latency system bus. The 80321 PCI Bus is capable of 133 MHz operation in PCI-X mode as defined by the PCI-X Addendum to the PCI Local Bus Specification, Revision 1.0a. Also, the processor supports a 66 MHz conventional PCI mode as defined by the PCI Local Bus Specification, Revision 2.2. The addition of the Intel XScale ® core brings intelligence to the PCI bus application bridge. The 80321 is a single-function PCI device. This function represents the address translation unit. The address translation unit is an ‘application bridge’ as defined by the PCI-X Addendum to the PCI Local Bus Specification, Revision 1.0a. The 80321 contains PCI configuration space accessible through the PCI bus. |
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