Product specifications

VT1211 LPC SuperIO and Hardware Monitor
Revision 1.0 January 8, 2002 -46- Register Descriptions – Hardware Monitor I/O
Technologies, Inc.
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Offset 47 – Fan Speed Control (25h)..............................RW
7-6 FAN2 RPM Control
FAN2 Speed Control
00 Divide by 1
01 Divide by 2.............................................default
10 Divide by 4
11 Divide by 8
5-4 FAN1 RPM Control
FAN1 Speed Control
00 Divide by 1
01 Divide by 2.............................................default
10 Divide by 4
11 Divide by 8
3-0 Reserved ........................................ always reads 0
Offset 48 – Interrupt Mask 2 (2Dh) ................................RW
7SMBusBusy......................................................... RO
A one indicates that the Hardware Monitor is busy
for a Serial Bus transaction.
6-0 SMBus Address................................................... RW
[6:0] = 0101101
Offset 49 –VID4 / Device ID.............................................RW
7-6 Reserved ........................................ always reads 0
5-4 Temp2 (UCH1, TIN1).......................................... RO
For thermal input 2:10-bit temperature resolution
(LSB TEMP2[1:0]).
3 BEEP .........................................................RW
Beep Output
2 Chassis .......................................................... RO
Chassis active low output 20ms.
1 Interrupt .......................................................... RO
Interrupt active high output.
0AFEEnable.......................................................... RO
If High Enable AFE operation and Low would be
enter to standby mode of AFE.
Offset 4A –Universal Channel Configuration (07h)...... RW
7 Reserved ........................................always reads 0
6 UCH5 ..............................................default = 0
Logic 1 enables the Thermal input of Universal
Channel 1 (UCH5), Logic 0 for Voltage inputs.
(Powerup default = 0).
5 UCH4 ..............................................default = 0
Logic 1 enables the Thermal input of Universal
Channel 1 (UCH4), Logic 0 for Voltage inputs.
(Powerup default = 0)
4 UCH3 ..............................................default = 0
Logic 1 enables the Thermal input of Universal
Channel 1 (UCH3), Logic 0 for Voltage inputs.
(Powerup default = 0)
3 UCH2 .............................................. default = 0
Logic 1 enables the Thermal input of Universal
Channel 1 (UCH2), Logic 0 for Voltage inputs.
(Powerup default = 0)
2 UCH1 .............................................. default = 1
Logic 1 enables the Thermal input of Universal
Channel 1 (UCH1), Logic 0 for Voltage inputs.
(Powerup default = 1)
1-0 Reserved ........................................always reads 0