Specification Sheet

Interfaces
34 Intel
®
Xeon
®
Processor E5-1600/E5-2600/E5-4600 v2 Product Families
Datasheet Volume One of Two
2.5.2.2.1 Command Format
The GetDIB() format is as follows:
Write Length: 0x01
Read Length: 0x08
Comm
and: 0xf7
2.5.2.2.2 Device Info
The Device Info byte gives details regarding the PECI client configuration. At a
minimum, all
clients supporting GetDIB will return the number of domains inside the
package via this field. With any client, at least one domain (Domain 0) must exist.
Therefore, the Number of Domains reported is defined as the number of domains in
addition to Domain 0. For example, if bit 2 of the Device Info byte returns a ‘1’, that
would indicate that the PECI client supports two domains.
2.5.2.2.3 Revision Number
All clients that support the GetDIB command also support Re
vision Number reporting.
The revision number may be used by a host or originator to manage different command
suites or response codes from the client. Revision Number is always reported in the
second byte of the GetDIB() response. The ‘Major Revision’ number in Figure 2-7
Figure 2-5. GetDIB()
Byte #
Byte
Definition
0
Client Address
1
Write Length
0x01
2
Read Length
0x08
4
FCS
3
Cmd Code
0xf7
5
Device Info
6
Revision
Number
7
Reserved
8
Reserved
9
Reserved
10
Reserved
11
Reserved
12
Reserved
13
FCS
Figure 2-6. Device Info Field Definition
Reserved
# of Domains
Reserved
76543210
Byte# 5