Intel E7-8891 v2 CM8063601377422 ユーザーズマニュアル

462

Intel

®

 Xeon

® 

Processor E7-2800/4800/8800 v2 Product Family

Datasheet Volume Two: Functional Description, February 2014

94:88

ROS_V

0x0

Lower_Address[6:0]:

Lower Address.
This field is valid for completions only. For memory read completions, this 

is the byte address for the first enabled byte of data returned. For all other 

completions, this field is set to all 0’s.

87:80

ROS_V

0x0

Tag[7:0]:

Tag.
This field is valid for completions only. This field in combination with the 

Requester ID field form a unique Transaction ID. The value from the 

original request must be preserved into the completion.

79:64

ROS_V

0x0

ReqID[15:0]:

Requester ID.
This field is located here for completions only. It’s located elsewhere for 

memory, configuration, I/O, and message requests. 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.

63:56

ROS_V

0x0

ByteCnt[7:0]:

Byte Count.
This field is valid for completions only. For memory read completions, this 

specifies the remaining byte count to satisfy the request including the 

current packet payload. For all other completions, this field must be set to 

4. This field is concatenated with ByteCnt[11:8] to form ByteCnt[11:0].

55:53

ROS_V

0x0

CplStat[2:0]:

Completion Status.
This field is valid for completions only. This indicates the status for the 

completion, encoded as follows: 
3'b000: Successful Completion 
3'b001: Unsupported Request/Master Abort 
3'b010: Configuration Request Retry Status 
3'b100: Completer Abort 
All other encodings are reserved.

52:52

ROS_V

0x0

BCM:

Byte Count Modified.
This field is valid for completions only. This field is set only in initial 

completion packets and only by PCI-X completer. A value of “1” indicates 

that the Byte Count field reports only the size of the current packet.

51:48

ROS_V

0x0

ByteCnt[11:8]:

Byte Count.
This field is valid for completions only. This field is concatenated with 

ByteCnt[7:0] to form ByteCnt[11:0]. See description for ByteCnt[7:0].

47:32

ROS_V

0x0

CplID[15:0]:

Completer ID.
This field is valid for completions only. This uniquely identifies the 

completer and is comprised as follows: {device[4:0], function[2:0], 

bus[7:0]}.