Intel 413808 Manuel D’Utilisation

Intel

®

 413808 and 413812 I/O Controllers in TPER Mode

October 2007

Developer’s Manual

Order Number: 317805-001US

379

Address Translation Unit (PCI Express)—Intel

®

 413808 and 413812

3.17.100 Outbound Upper Memory Window Base Address Register 3 - 

OUMBAR3

The OUMBAR3 register locates Outbound Memory Window 3 in a 4 Gbyte Memory 

section in the 4138xx’s 64 Gbyte internal address space. When A[35:32] of the internal 

bus address matches the value in OUMBAR3[3:0], the ATU claims the transaction and 

forward it over to the PCI interface.

Note:

In translating the internal bus address A[35:0], A[31:0] is forwarded over to the PCI 

bus unmodified. The ATU constructs a 64 bit PCI address in conjunction with the 

.

Table 240. Outbound Upper Memory Window Base Address Register  3 - OUMBAR3

Bit

Default

Description

31

0

2

Outbound Window 3 Enable - When set, the ATU Outbound Memory Window 3 claims internal bus 

transactions when A[35:32] matches OUMBAR3[3:0].

30:28

000

2

Outbound Window 3 Function Number Mapping - Errors with Outbound Memory Window 3 transactions 

(PCI or Internal Bus) are associated with the function number contained in this field. 

27

0

Big Endian Byte Swap enable - When set the ATU performs a byte swap on all read/write transactions 

through this BAR. When clear, no swap is performed. Refer to 

 for more details.

26:04

000 0000H Reserved

3:0

4H

Outbound Upper Memory Window Base Address 3 - This value represents bits 35 to 32 of the internal 

bus address used to claim an outbound memory request.

Note:

The ATUX has the same default value. When both ATUs exist and the outbound windows of the 

both ATUs are enabled, the bit field must be reprogrammed to avoid a conflict.

PCI

IOP

Attributes

Attributes

28

24

20

16

12

8

4

0

31

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

rv

rv

rv

rv

rv

rv

rv

rv

rv

rv

rv

rv

rv

rv

rv

rv

rw

rw

rw

rw

rw

rw

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

+320H