Intel 80312 I/O Companion Chip - ECEE

Intel ® 80312 I/O Companion ChipPCI Address Translation Unit5.7.25 Primary Outbound Memory Window Value Register -POMWVRThe Primary Outbound Memory Window Value Register (POMWVR) contains the primary PCIaddress used to convert Intel ® 80312 I/O companion chip internal bus addresses for outboundtransactions. This address is driven on the primary PCI bus as a result of the primary outboundATU address translation. See Section 5.2.2.1, “Outbound Address Translation” on page 5-15 fordetails on outbound address translation.The primary memory window is from internal bus address 8000 000H to 83FF FFFFH with thefixed length of 64 Mbytes.Table 5-53.Primary Outbound Memory Window Value Register - POMWVRIOPAttributes31 28 24 20 16 12 8 4 0rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rv rv ro roPCIAttributesrw rw rw rw rw rw rw rwrw rw rw rw rw rw rw rwrw rw rw rw rw rw rw rw rw rw rw rwrvrvroroIntel ® 80200 Processor Local Bus Address1254HPCI Configuration Address Offset54H - 57HAttribute Legend:RV = ReservedPR = PreservedRS = Read/SetRW = Read/WriteRC = Read ClearRO = Read OnlyNA = Not AccessibleBit Default Description31:04 0000 000H Primary Outbound MW Value - Used to convert Intel® 80312 I/O companion chip internal bus addressesto PCI addresses.03:02 00 2 ReservedBurst Order - This bit field shows the address sequence during a memory burst. Only linear01:00 00 2 incrementing mode is supported.5-86 Developer’s Manual