Intel 80312 I/O Companion Chip - ECEE

Intel ® 80312 I/O Companion ChipPeripheral Memory-Mapped RegistersTable A-2. Peripheral Memory-Mapped Register Locations (Sheet 4 of 8)Intel ® 80312I/O CompanionChipPeripheralAddress Translation Unit Extended Configuration RegistersMessaging UnitATU Capability Identifier Register 8 0000 1280H 20HATU Next Item Pointer Register 8 0000 1281H 20HATU Power Management Capabilities Register 16 0000 1282H 20HATU Power Management Control/Status Register 16 0000 1284H 21HReservedx0000 1286Hthrough0000 1287HATU Configuration Register 32 0000 1288H 22HReservedx0000 128CHthrough0000 1289HPrimary ATU Interrupt Status Register 32 0000 1290H 24HSecondary ATU Interrupt Status Register 32 0000 1294H 25HSecondary ATU Command Register 16 0000 1298H 26HSecondary ATU Status Register 16 0000 129AH 26HSecondary Outbound DAC Window Value Register 32 0000 129CH 27HSecondary Outbound Upper 64-bit DAC Register 32 0000 12A0H 28HPrimary Outbound Configuration Cycle Address Register 32 0000 12A4H 29HSecondary Outbound Configuration Cycle Address Register 32 0000 12A8H 2AHPrimary Outbound Configuration Cycle Data Register 32 0000 12ACH ReservedSecondary Outbound Configuration Cycle Data Register 32 0000 12B0H ReservedPrimary ATU Queue Control Register 32 0000 12B4H 2DHSecondary ATU Queue Control Register 32 0000 12B8H 2EHPrimary ATU Interrupt Mask Register 32 0000 12BCH 2FHSecondary ATU Interrupt Mask Register 32 0000 12C0H 30HReservedRegister Description (Name)RegisterSize inBitsxInternal BusAddress0000 12C4Hthrough0000 12FFHReservedx0000 1300Hthrough0000 130CHInbound Message Register 0 32 0000 1310HInbound Message Register 1 32 0000 1314HOutbound Message Register 0 32 0000 1318HOutbound Message Register 1 32 0000 131CHInbound Doorbell Register 32 0000 1320HInbound Interrupt Status Register 32 0000 1324HInbound Interrupt Mask Register 32 0000 1328HOutbound Doorbell Register 32 0000 132CHOutbound Interrupt Status Register 32 0000 1330HOutbound Interrupt Mask Register 32 0000 1334HPCIConfigurationSpace RegisterNumberAvailable throughATU Primary Inbound Translation Windowor must translate PCI address to theIntel ® 80312 I/O companion chipMemory-Mapped AddressA-8 Developer’s Manual