
- 13 - 
 Andigilog, Inc. 2006 
www.andigilog.com
December
 2006 - 70A05012 
aSC7531A / aSC7531B
Device Interface Field (1-byte) 
The vendor sets to ‘1’, bit positions in this field in the event the device supports higher layer protocols that are industry specific using 
Table 5. 
Value = 0x02 
Bit 
Protocol 
Meaning 
7 
- 
Reserved for future use , must be set = ‘0’
6 
- 
Reserved for future use , must be set = ‘0’
5 
IPMI
Device supports additional access and capabilities per the IPMI specification.
4 
ASF
Device supports additional access and capabilities per the ASF specification.
3 
Serial-ATA
Device supports additional access and capabilities per the serial-ATA specification. 
Device supports additional access and capabilities per the PCI Express 
specification.
Device supports additional access and capabilities per the SST Functional 
Descriptor Specification (to be published at a future date).
Device supports vendor-specific additional access and capabilities per the Vendor 
ID and Device ID.
2 
PCI-Express
1 
SST 
0 
OEM 
Table 5. Device Interface Field 
Function Interface Field (1-byte) 
This field provides a mechanism for a device to pass higher-layer SST device-specific information. 
Value = 0x00 
Device Interface Extension Field (1-byte) 
This field is used to provide additional information about the device to the upper layers of software. 
Value = 0x00 
Reserved Field (3-bytes) 
Value = 0x00 0x00 0x00 
Vendor Specific ID Field (1-byte) 
This field is set by the vendor in a way that uniquely identifies this device apart from all others with an otherwise common DIB 
content. 
Value = 0x00 – For Fixed address devices this field may be set to zero. 
Client Device Address (1-byte) 
SST Client Device Address is set according to the connection of the ADD0 pin. The combination part appears to software as two 
sensors, a simple temperature and a simple voltage sensor residing at the same address. Float is defined as an unconnected pin. 
ADD0 
Address 
Ground 
0x48 
Float 
0x49 
V
DD
0x4A