Intel CONTROLLERS 413808 - Manual (Page 372)

Intel
®
413808 and 413812—Address Translation Unit (PCI Express)
Intel ® 413808 and 413812 I/O Controllers in TPER Mode
Developer’s Manual October 2007
372 Order Number: 317805-001US
3.17.93 Outbound I/O Window Translate Value Register - OIOWTVR
The Outbound I/O Window Translate Value Register (OIOWTVR) contains the PCI I/O
address used to convert the internal bus access to a PCI address. This address is driven
on the PCI Express Link as a result of the outbound ATU address translation. See
Section 3.3.2.1, “Outbound Address Translation - Internal Bus Transactions” on
page 245 for details on outbound address translation.
The I/O window is from 4138xx internal bus is set via the “Outbound I/O Base Address
Register - OIOBAR” with the a fixed length of 64 Kbytes.
Table 233. Outbound I/O Window Translate Value Register - OIOWTVR
Bit Default Description
31:16 0000H Outbound I/O Window Translate Value - Used to convert internal bus addresses to PCI addresses.
15:01 0000H Reserved
00 0
Big Endian Byte Swap enable - When set the ATU performs a byte swap on all PCI read/write
transactions through OIOBAR. When clear, no swap is performed. Refer to Section 3.4, “Big Endian Byte
Swapping” on page 255 for more details.
PCI
IOP
Attributes
Attributes
28 24 20 16 12 8 4 0 31
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
rw
rw
rw
rw
rw
rv
rv
rv
rv
rv
rv
rv
rv
rv
rv
rv
rv
rv
rv
rv
rv
rv
rv
rv
rv
rv
rv
rv
rv
rv
rv
rv
rv
rv
rv
rw
rw
Attribute Legend:
RV = Reserved
PR = Preserved
RS = Read/Set
RW = Read/Write
RC = Read Clear
RO = Read Only
NA = Not Accessible
Internal Bus Address Offset
+304H