W83791G Datasheet, PDF (77/99 Pages) Winbond – Winbond H/W Monitoring IC

W83791D/G
8. ARP (ADDRESS RESOLUTION PROTOCOL) USE REGISTER DEFINED
8.1 Unique Device Identifier (UDID) -- 20h-2Fh (Bank 1)
In order to provide a mechanism to isolate each device for the purpose of address assignment
each device must implement a unique device identifier (UDID). This 128-bit number is comprised of
the following fields:
1
Byte
1
Byte
2
Byte
2
Byte
2
Byte
Device Version/ Vendor ID Device ID Interface
Capabilities _Revision
Bank 1 Bank 1 Bank 1 Bank 1 Bank 1
Index 20h Index 21h 22h-23h 24h-25h 26h-27h
2
Byte
Subsystem
Vendor ID
2
Byte
4
Byte
Subsystem Vendor
Device ID Specific ID
Bank 1
28h-29h
Bank 1
2Ah-2Bh
Bank 1
2Ch-2Fh
INDEX
20h
21h
22-23h
24-25h
26-27h
28-29h
2A-2Bh
2C-2Fh
ATTRIBUTE
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
DESCRIPTIONS
Device Capabilities (DEV_CAP [7:0]). Describes the device’s
capabilities. See detail SMBus 2.0.
Version/Revision (VERSION [7:0]). UDID version number and silicon
revision identification. See detail SMBus2.0 Tues.
Vendor ID (VENDOR_ID [15:0]). The device manufacturer’s ID as
assigned by the SBS Implementers’ Forum or the PCI SIG.
Device ID (DEV_ID [15:0]). The device ID as assigned by the device
manufacturer (identified by the Vendor ID field).
Interface (INTERFACE [15:0]). Identifies the protocol layer interfaces
supported over the SMBus connection by the device. For example, ASF
and IPMI.
Subsystem Vendor ID (SVENDOR_ID [15:0]). This field may hold a
value derived from any of several sources:
1. The device manufacturer’s ID as assigned by the SBS Implementers’
Forum or the PCI SIG.
2. The device OEM’s ID as assigned by the SBS Implementers’ Forum
or the PCI SIG.
3. A value that, in combination with the Subsystem Device ID, can be
used to identify an organization or industry group that has defined a
particular common device interface specification.
Subsystem Device ID (SDEV_ID [15:0]). The subsystem ID identifies a
specific interface, implementation, or device. The Subsystem ID is
defined by the party identified by the Subsystem Vendor ID field.
Vendor Specific ID (SPEC_ID [31:0]). A unique number per device.
See detail SMBus 2.0.
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Publication Release Date: April 14, 2006
Revision 1.1