W83791G Nuvoton Technology Corporation of America, W83791G Datasheet - Page 24

• Manufacturer Part Number: W83791G
• Description: IC MONITOR H/W 48-LQFP
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of W83791G

• Function: Hardware Monitor
• Topology: ADC
• Sensor Type: External
• Sensing Temperature: External Sensor
• Output Type: I²C™
• Output Alarm: Yes
• Output Fan: Yes
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 48-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Platform Event Trap (PET), continued.
Following is the illustration of ASF SMBus command for Get Event Data.
Sensor Device
Sensor Number
Entity ID
Entity Instance
Event Status Index
Event Status
Event Severity
8
Wr Data 1
Sub Command
Get Event Data
0001 0001
1
S
1
Sr
PET VARIABLE BINDING FIELD
7
Slave Address Wr
ASF-sensor
Address
7
Slave Address
ASF-sensor Address
1
A
0
1
0
8
Wr
2
Version
Number
0001
0000
Data
1
A
0
1
1
R
1
A
0
8
Command
Sensor Device
0000 0001
1
A
0
The Sensor Device is the SMBus address of the sensor
that caused the event for the PET frame.
The Sensor Number is used to identify a given instance
of a sensor relative to the Sensor Device.
The Entity ID indicates the platform entity the event is
associated with. E.g. processor, system board, etc.
The Entity Instance indicates which instance of the Entity
the event is for. E.g. processor 1 or processor 2.
The Event Status Index identifies a unique event
monitored by the ASF-sensor. It is zero-based,
sequential, continuous, and ranging form 0-37h.
The Event Status indicates the event state of the ASF-
sensor device associated with the message’s Event
Status Index.
The Event Severity gives the management station an
indication of the severity of the event in the PET frame.
Typical values are Monitor (0x01), Non Critical (0x08), or
Critical Condition (0x10).
8
Wr Data 3
Event
Index
00ii iiii
- 18 -
8
Rd Byte Count
0000 1010 to
0000 1111
Status
1
A
0
Publication Release Date: April 14, 2006
1
A
0
DESCRIPTION
8
Wr Byte Count A
0000 0100
8
Wr Data 4
Reserved
0000 0000
1
A
0
W83791D/G
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1
0
1
A
0
Revision 1.1
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