Intel 80312 I/O Companion Chip - ECEE

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Intel ® 80312 I/O Companion ChipPCI-to-PCI Bridge Unit4.15.36 Capability Identifier Register - Cap_IDThe Capability Identifier Register bits adhere to the definitions in the PCI Local Bus Specification,Revision 2.2. This register in the PCI Extended Capability header identifies the type of ExtendedCapability contained in that header. In the case of the Intel ® 80312 I/O companion chip, this is thePCI Bus Power Management extended capability with an ID of 01H as defined by the PCI BusPower Management Interface Specification, Revision 1.1.Table 4-57.Capability Identifier Register - Cap_IDIOPAttributes7 4 0ro ro ro ro ro ro ro roPCIAttributesrorororororororoPCI Configuration Offset68HIntel ® 80200 Processor Local Bus Address0000 1068HAttribute Legend:RV = ReservedPR = PreservedRS = Read/SetRW = Read/WriteRC = Read ClearRO = Read OnlyNA = Not AccessibleBit Default Description07:00 01HCap_Id - This field with its 01H value identifies this item in the linked list of Extended Capability Headersas being the PCI Power Management Registers.4-124 Developer’s Manual
Intel ® 80312 I/O Companion ChipPCI-to-PCI Bridge Unit4.15.37 Next Item Pointer Register - Next_Item_PtrThe Next Item Pointer Register bits adhere to the definitions in the PCI Local Bus Specification,Revision 2.2. This register describes the location of the next item in the function capability list. Forthe Intel ® 80312 I/O companion chip, the Power Management Registers are the only ExtendedCapability Supported, thus the Next_Item_Ptr is set to 00H, indicating the end of the CapabilitiesList.Table 4-58.Next Item Pointer Register - Next_Item_PtrIOPAttributes7 4 0ro ro ro ro ro ro ro roPCIAttributesrorororororororoPCI Configuration Offset69HIntel ® 80200 Processor Local Bus Address0000 1069HAttribute Legend:RV = ReservedPR = PreservedRS = Read/SetRW = Read/WriteRC = Read ClearRO = Read OnlyNA = Not AccessibleBit Default Description07:00 00HNext_ Item_ Pointer - This field provides an offset into the function configuration space pointing to thenext item in the function capability list. Since there are no other Extended Capabilities besides PCIPower Management in the Intel ® 80312 I/O companion chip, the register is set to 00H.Developer’s Manual 4-125
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Memory Controller 3This chapter des
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