Intel E7-8891 v2 CM8063601377422 User Manual

Product codes
CM8063601377422
Page of 504
Intel
®
 Xeon
® 
Processor E7-2800/4800/8800 v2 Product Family
307
Datasheet Volume Two: Functional Description, February 2014
Integrated I/O (IIO) Configuration Registers
14.3.13 DMIVC1CDTTHROTTLE
DMI VC1 Credit Throttle
14.3.14 DMIVCPCDTTHROTTLE
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 
Type:
MEM
PortID:
8’h7e
Bus:
0
Device:
0Function:0
Offset:
0x3e
Bit
Attr
Default Description
Type:
MEM
PortID:
8’h7e
Bus:
0
Device:
0Function:0
Offset:
0x60
Bit
Attr
Default Description
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. 
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