Intel E7-8891 v2 CM8063601377422 User Manual

Product codes
CM8063601377422
Page of 504
Intel
®
 Xeon
® 
Processor E7-2800/4800/8800 v2 Product Family
453
Datasheet Volume Two: Functional Description, February 2014
Integrated I/O (IIO) Configuration Registers
Type:
CFG
PortID:
N/A
Bus:
0
Device:
5Function:2
Offset:
IRPP0: 0x240, 
Size: 128 bits
IRPP1: 0x2c0 
Bit
Attr
Default
Description
127:96
ROS_V
0x0
MsgFields[63:32]:
Message-Related Fields. 
This field is valid for messages only. These bits contain several message 
related fields as defined in the PCIe* specification.
95:64
ROS_V
0x0
MsgFields[31:0]:
Message-Related Fields.
This field is valid for messages only. These bits contain several message 
related fields as defined in the PCIe* specification.
63:56
ROS_V
0x0
MsgCode[7:0]:
Message Code.
This field is valid for message requests only. The message code encodings 
are as defined in the PCIe* specification.
55:48
RV
-
Reserved. 
47:32
ROS_V
0x0
ReqID[15:0]:
Requester ID.
This field is located here only for memory, configuration, I/O, and 
message requests. This field is located elsewhere for completions. This 
field in combination with the Tag field form a unique Transaction ID. The 
Requester ID is comprised as follows: {device[4:0], function[2:0], 
bus[7:0]}. The value from the original request must be preserved into the 
completion.
31:31
ROS_V
0x0
TD:
TLP Digest.
A value of “1” in this field indicates the presence of a single DW TLP digest 
at the end of the packet for use in ECRC protection as defined by the 
PCIe* specification. 
Note: Intel Xeon processor E7-2800/4800/8800 v2 product family Product 
Family IIO does not support ECRC generation/checking so the switch does 
not store/forward ECRC.
30:30
ROS_V
0x0
EP:
Error Poisoned.
This field is used to indicate that the data payload contained in the packet 
is poisoned. 
29:28
ROS_V
0x0
Attr[1:0]:
Attributes.
These provide hints as to how the packet should be handled: 
Bit 1 set to “1” indicates Relaxed Ordering.
Bit 0 set to “1” indicates No Snoop.
This field must be set to all 0’s for configuration requests, I/O requests, 
message requests, and message signaled interrupts.
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