Intel E7-8891 v2 CM8063601377422 Benutzerhandbuch

Intel

®

 Xeon

® 

Processor E7-2800/4800/8800 v2 Product Family

307

Datasheet Volume Two: Functional Description, February 2014

DMI VC1 Credit Throttle

DMI VCp Credit Throttle

1:1

RO_V

0x1b

vcmnp:

Virtual Channel M Negotiation Pending  
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.
BIOS Requirement: 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. 

0:0

RV

-

Reserved 

31:24 RWS

0x0

prd:

Posted Request Data VC1 Credit Withhold  
Number of VC1 Posted Data credits to withhold from being reported or used. 

23:22 RV

-

Reserved  

21:16 RWS

0x0

prh:

Posted Request Header VC1 Credit Withhold  
Number of VC1 Posted Request credits to withhold from being reported or used. 

15:8

RWS

0x0

nprd:

Non-Posted Request Data VC1 Credit Withhold  
Number of VC1 Non-Posted Data credits to withhold from being reported or used. 

7:6

RV

-

Reserved  

5:0

RWS

0x0

nprh:

Non-Posted Request Header VC1 Credit Withhold  
Number of VC1 Non-Posted Request credits to withhold from being reported or 

used.