W83791G Nuvoton Technology Corporation of America, W83791G Datasheet - Page 48

• 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

7.31 VID/Fan Divisor Register ⎯ Index 47h (Bank 0)
Power on default: 0101_xxxx
Note: Please refer to Bank0 Index 5Dh, Fan divisor table.
7.32 Serial Bus Address Register ⎯ Index 48h (Bank 0)
Power on default: 0010_11xx.
7.33 Voltage ID (VID4) & Device ID ⎯ Index 49h (Bank 0)
Power on default: 0001_000x
7-6
5-4
3-0
7
6-0
7-1
0
BIT
BIT
BIT
DID<6:0>
VID4
FAN2_DIV
FAN1_DIV
VID <3:0>
Reserved
SMBADDR1
NAME
NAME
NAME
Read only
Read only
ATTRIBUTE
ATTRIBUTE
Read only
R/W
ATTRIBUTE
R/W
R/W
The VID <3:0> inputs, which is latched when VDD 5V power
The VID4 input, which is latched when VDD 5V power good.
FAN2 Speed Divisor. The third bit of FAN 2 divisor is defined in
Index 5Dh.
<7:6> = 00 - divide by 1;
<7:6> = 01 - divide by 2 (Default);
<7:6> = 10 - divide by 4;
<7:6> = 11 - divide by 8.
FAN1 Speed Control. The third bit of FAN 1 divisor is defined
in Index 5Dh.
<5:4> = 00 - divide by 1;
<5:4> = 01 - divide by 2 (Default);
<5:4> = 10 - divide by 4;
<5:4> = 11 - divide by 8.
good.
Device ID<6:0>, W83791D/G version ID that differentiates chip
serial product number. This default value is 0010000b, that
means is 1.0.
Reserved.
Serial Bus Address <7:1> for general index registers. The
address bit 0 and bit 1 are trapped by the pin 10 and pin
11, respectively.
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DESCRIPTION
DESCRIPTION
DESCRIPTION
Publication Release Date: April 14, 2006
W83791D/G
Revision 1.1