38 expansion rom translate value register - ertvr, 38expansion rom translate value register - ertvr, 65 expansion rom translate value register - ertvr – Intel CONTROLLERS 413808 User Manual

Page 176: Section 2.14.39, Intel, Bit default description

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2.14.38 Expansion ROM Translate Value Register - ERTVR

The Expansion ROM Translate Value Register 0 (ERTVR) in conjunction with the

“Expansion ROM Upper Translate Value Register - ERUTVR” on page 176

contain bits 35

to 12 of the internal bus address used to convert PCI bus addresses. The converted

address is driven on the internal bus as a result of the Expansion ROM address

translation.

2.14.39 Expansion ROM Upper Translate Value Register - ERUTVR

The Expansion ROM Upper Translate Value Register (ERUTVR) in conjunction with the

“Expansion ROM Translate Value Register - ERTVR” on page 176

contain bits 35 to12 of

the internal bus address used to convert PCI bus addresses. The converted address is

driven on the internal bus as a result of the Expansion ROM address translation.

Table 65. Expansion ROM Translate Value Register - ERTVR

Bit

Default

Description

31:12

00000H

Expansion ROM Translation Value - Bits 31 to 12 of internal bus address used to convert PCI address to

internal bus addresses. This value must be naturally aligned with the ERBAR register’s programmed

value (see

Section 2.14.23, “Determining Block Sizes for Base Address Registers” on page 164

11:01

000H

Reserved

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

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

Section 2.3, “Big Endian Byte

Swapping” on page 78

for more details.

PCI

IOP

Attributes

Attribute Legend:

RV = Reserved

PR = Preserved

RS = Read/Set

RW = Read/Write

RC = Read Clear

RO = Read Only

NA = Not Accessible

+068H

Table 66. Expansion ROM Upper Translate Value Register - ERUTVR

Bit

Default

Description

31:04

000 0000H Reserved

3:0

Expansion ROM Upper Translation Value - This value represents bits 35 to 32 of the internal bus address

used to convert the PCI address to internal bus addresses.

PCI

IOP