3

P M C / P C I I N T E R F A C E

PCI 6254 Configuration Registers

9Ch

A0h

A4h

A8h

ACh

B0h

B4h

B8h

BCh

C0h

C4h

C8h

CCh

D0h

D4h

D8h

DCh

E0h

E4h

E8h

ECh

F0h

GPIO[7-4] Input Register

GPIO[7-4] Output Enable

GPIO[7-4] Output Data

Hot Swap Switch ROR

Control

 

 

 

 

 

 

 

GPIO[15-8] Input Register

GPIO[15-8] Output Enable

GPIO[15-8] Output Data

Power-up Status

 

 

 

 

Upstream Message 3

Upstream Message 2

Upstream Message 1

Upstream Message 0

 

 

 

 

Downstream Message 3

Downstream Message 2

Downstream Message 1

Downstream Message 0

 

 

 

 

MSI Control

Next Item Pointer=00

MSI Cap ID=5 (rev AA=8)

 

 

 

 

 

MSI Address

 

 

 

 

 

MSI Upper Address

 

 

 

 

 

reserved

MSI Data

 

 

 

 

 

reserved

 

 

 

 

 

Downstream Doorbell Request

Downstream Doorbell Enable

 

 

Upstream Doorbell Request

Upstream Doorbell Enable

 

 

 

 

Upstream Interrupt Enable

Downstream Interrupt

Downstream Doorbell Status

Status

 

 

 

 

 

 

 

Downstream Interrupt

Upstream Interrupt Status

Upstream Doorbell Status

Enable

 

 

 

 

 

 

 

Extended Register Index

NT Config Own Semaphore

reserved

reserved

 

 

 

 

 

Extended Registers Dataport

 

 

 

 

Arbiter Control

Diagnostic Control

Chip Control

 

 

 

Power Management Capabilities

Next Item Pointer=E4

Capability ID=01

 

 

 

 

Power Management Data

PMSCSR Bridge Support

Power Management CSR

 

 

 

 

reserved

HSCSR=00

Next Item Pointer=E8

Capability ID=06

 

 

 

 

VPD Register=0000

Next Item Pointer=00

Capability ID=03

 

 

 

 

 

VPD Data Register=0000_0000

 

 

 

 

 

 

reserved

 

 

 

 

 

3-10CC1000dm User’s Manual

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