Intel E5540 AT80602000789AA User Manual
Product codes
AT80602000789AA
Intel
®
Xeon
®
Processor 5500 Series Datasheet, Volume 1
121
Thermal Specifications
Because a particular MbxSend() command may specify an update to potentially critical
registers inside the processor, it includes an Assured Write FCS (AW FCS) byte as part
of the write data payload. In the event that the AW FCS mismatches with the client-
calculated FCS, the client will abort the write and will always respond with a bad Write
FCS.
registers inside the processor, it includes an Assured Write FCS (AW FCS) byte as part
of the write data payload. In the event that the AW FCS mismatches with the client-
calculated FCS, the client will abort the write and will always respond with a bad Write
FCS.
6.3.2.7.2
Command Format
The MbxSend() format is as follows:
Write Length: 7
Read Length: 1
Command: 0xd1
Description: Deposits the Request Type and associated 4-byte data in the Mailbox
interface and returns a completion code byte with the details of the execution results.
Refer to
interface and returns a completion code byte with the details of the execution results.
Refer to
Figure 6-23. MbxSend() Command Data Format
Byte #
Byte
Definition
0
Request Type
1
Data[31:0]
2
3
4
Figure 6-24. MbxSend()
Byte #
Byte
Definition
0
Client Address
1
Write Length
0x07
2
Read Length
0x01
10
FCS
3
Cmd Code
0xd1
11
Completion
Code
12
FCS
5
6
7
8
LSB
MSB
Data[31:0]
10
11
9
AW FCS
4
Request Type