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PCI9060ES Datasheet(PDF) 11 Page - List of Unclassifed Manufacturers |
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PCI9060ES Datasheet(HTML) 11 Page - List of Unclassifed Manufacturers |
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11 / 192 page  SECTION 1 PCI 9080 GENERAL DESCRIPTION ©PLX Technology, Inc., 1997 Page 2 Version 1.02 ! " #$ " % & " '! ()* +, - & . & " / & / " ! ..# "0 !" ! " # $ ! " # % ! ! ! " # $ ! " # % ! ! Figure 1-2. PCI 9080 Internal Block Diagram 1.1 APPLICATIONS FOR THE PCI 9080 1.1.1 PCI Adapter Cards Major PCI adapter card applications for the PCI 9080 include high performance communications, networking, disk control, multimedia, and video adapters. PCI 9080 moves data between the host PCI bus and adapter local bus in several ways. First, the local CPU or host processor may program the DMA controller of the PCI 9080 to move data between the adapter memory and host PCI bus. Second, PCI 9080 can perform “Direct Master Transfers,” whereby a local CPU or controller accesses the PCI bus directly through a PCI master transfer. PCI 9080 also supports slave transfers in which another PCI device is the master. Finally, PCI 9080 contains a complete messaging unit with mailbox registers, doorbell registers, and queue management pointers that can be used for message passing under the I2O protocol or a custom protocol. 1.1.2 Embedded Systems Another application for PCI 9080 is in embedded systems, such as network hubs and routers, printer engines, and industrial equipment. In this configuration, all four of the above-mentioned data transfer modes are used. In addition, PCI 9080 supports Type 0 and Type 1 PCI configuration cycles, which allows embedded CPU to act as the embedded system host and to configure other PCI devices in the system. |
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