Intel BX80635E52697V2 Manual Do Utilizador
Intel® Xeon® Processor E5-1600 v2/E5-2600 v2 Product Families
75
Datasheet Volume One of Two
Interfaces
Note:
The codes explicitly defined in
may be useful in PECI originator response
algorithms. Reserved or undefined codes may also be generated by a PECI client
device, and the originating agent must be capable of tolerating any code. The Pass/Fail
mask defined in
applies to all codes, and general response policies may be
based on this information. Refer to
for originator response policies and
recommendations.
2.5.6
Originator Responses
The simplest policy that an originator may employ in response to receipt of a failing
completion code is to retry the request. However, certain completion codes or FCS
completion code is to retry the request. However, certain completion codes or FCS
responses are indicative of an error in command encoding and a retry will not result in
a different response from the client. Furthermore, the message originator must have a
response policy in the event of successive failure responses. Refer to
response policy in the event of successive failure responses. Refer to
for
originator response guidelines.
Refer to the definition of each command in
possible command codes or FCS responses for a given command. The following
response policy definition is generic, and more advanced response policies may be
employed at the discretion of the originator developer.
2.5.7
DTS Temperature Data
2.5.7.1
Format
The temperature is formatted in a 16-bit, 2’s complement value representing a number
of 1/64 degrees Celsius. This format allows temperatures in a range of ±512°C to be
of 1/64 degrees Celsius. This format allows temperatures in a range of ±512°C to be
reported to approximately a 0.016°C resolution.
Table 2-23. Originator Response Guidelines
Response
After 1 Attempt
After 3 Attempts
Bad FCS
Retry
Fail with PECI client device error.
Abort FCS
Retry
Fail with PECI client device error if command was not illegal or
malformed.
CC: 0x8x
Retry
The PECI client has failed in its attempts to generate a response.
Notify application layer.
CC: 0x9x
Abandon any further
attempts and notify
application layer
n/a
None (all 0’s)
Force bus idle (drive
low) for 1 mS and retry
Fail with PECI client device error. Client may not be alive or may be
otherwise unresponsive (for example, it could be in RESET).
CC: 0x4x
Pass
n/a
Good FCS
Pass
n/a
Figure 2-50. Temperature Sensor Data Format
MSB
Upper nibble
MSB
Lower nibble
LSB
Upper nibble
LSB
Lower nibble
S
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
Sign
Integer Value (0-511)
Fractional Value (~0.016)