User Manual

Intel
®
Xeon
®
Processor 5600 Series Datasheet Volume 1 153
Thermal Specifications
Unlike MbxSend(), no Assured Write protocol is necessary for this command because
this is a read-only function.
7.3.2.8.2 Command Format
The MbxGet() format is as follows:
Write Length: 2
Read Length: 5
Command: 0xd5
Multi-Domain Support: Yes (see Table 7-32)
Description: Retrieves response data from mailbox and unlocks / releases that
mailbox resource.
Note that the 4-byte data response defined above is sent in standard PECI ordering
with LSB first and MSB last.
Figure 7-30. MbxGet()
Response Data[31:0]
Byte #
Byte
Definition
0
Client Address
1
Write Length
0x02
2
Read Length
0x05
10
FCS
3
Cmd Code
0xd5
11
Completion
Code
5 6
LSB
MSB
5 64
Transaction ID
10 115 68 97 10
FCS
11
Table 7-30. MbxGet() Response Definition (Sheet 1 of 2)
Response Meaning
Aborted Write FCS Response data is not ready. Command retry is appropriate.
0x40 Command passed, data is valid
0x80 Error causing a response timeout. Either due to a rare, internal timing condition or a
processor RESET condition or processor S1 state. Retry is appropriate outside of the
RESET or S1 states.
0x81 Thermal configuration data was malformed or exceeded limits.
0x82 Thermal status mask is illegal
0x83 Invalid counter select
0x84 Invalid Machine Check Bank or Index
0x85 Failure due to lack of Mailbox lock or invalid Transaction ID
0x86 Mailbox interface is unavailable or busy