RTL8111C Ver la hoja de datos (PDF) - Realtek Semiconductor

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RTL8111C

INTEGRATED GIGABIT ETHERNET CONTROLLER FOR PCI EXPRESS™ APPLICATIONS

Realtek Semiconductor 

RTL8111C

Datasheet

6.8.2.

Bits

15:8

7

6:4

3:1

0

Message Control

Table 12. Message Control

RW

Field

Description

RO

Reserved

Reserved. Always return 0

RO 64-bit Address Capable 1: The RTL8111C is capable of generating a 64-bit message address.

0: The RTL8111C is NOT capable of generating a 64-bit message address.

This bit is read only and the RTL8111C is set to 1.

RW Multiple Message Enable System software (e.g., BIOS, OS) indicates to the RTL8111C the number

of allocated messages/vectors (equal to or less than the number of

requested messages/vectors).

This field after PCI reset is ‘000’.

Encoding

Number of Messages/Vectors

000

1

001

2

010

4

011

8

100

16

101

32

110

Reserved

111

Reserved

RO Multiple Message Capable Indication to system software (e.g., BIOS, OS) of the number of

RTL8111C requested vectors.

The RTL8111C supports only one vector messages/vectors.

Encoding

Number of Messages/Vectors

000

1

Others

Reserved

RW

MSI Enable

1: Enable MSI (Also the INTx pin is disabled automatically, MSI and

INTx are mutually exclusive), this bit is set by system software.

0: Disable MSI (Default value after power-on or PCI reset)

Integrated Gigabit Ethernet Controller for PCI Express

18

Track ID: JATR-1076-21 Rev. 1.5

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