Intel G550T CM8062301002309 User Manual

Datasheet, Volume 2

185

This register reports the Virtual Channel specific status.

15:2

RO

0h

1

RO-V

1b

Uncore

VC0 Negotiation Pending (VC0NP)
0 = The VC negotiation is complete.

1 = The VC resource is still in the process of negotiation 

(initialization or disabling).

This bit indicates the status of the process of Flow Control 

initialization. It is set by default on Reset, as well as whenever the 

corresponding Virtual Channel is Disabled or the Link is in the 

DL_Down state. It is cleared when the link successfully exits the 

FC_INIT2 state.
Before using a Virtual Channel, software must check whether the 

VC Negotiation Pending fields for that Virtual Channel are cleared 

in both Components on a Link.

0

RO

0h