SCH3112I-NE SMSC [SMSC Corporation], SCH3112I-NE Datasheet - Page 203

• Manufacturer Part Number: SCH3112I-NE
• Description: LPC IO with 8042 KBC, Reset Generation, HWM and Multiple Serial Ports
• Manufacturer: SMSC [SMSC Corporation]

LPC IO with 8042 KBC, Reset Generation, HWM and Multiple Serial Ports
Datasheet
Chapter 23 Temperature Monitoring and Fan Control
SMSC SCH311X
23.1
23.2
LPC Interface
The Hardware Monitoring (HWM) block contains the temperature monitoring and fan control functions.
The following sub-sections describe the HWM block features.
The SCH311X HWM block registers are accessed through an index and data register located at offset
70h and 71h, respectively, from the the address programmed in the Base I/O Address in Logical
Device A (also referred to as the Runtime Register set).
Block Diagram
HWM Interface
Figure 23.1 HWM Block Embedded in SCH311X
Interface
Block
LPC
SIO LOGIC
DATASHEET
Device A)
Runtime
(Logical
Reg's
187
Index
Data
HWM Registers
Generation Logic
Monitoring Logic
HWM BLOCK
Fan Control &
THERMTRIP
Monitoring
Interrupt
Digital
Analog
Rev 0.2 (09-28-04)
Remote1+
Remote1-
Remote2+
Remote2-
PWM1
PWM2
PWM3
TACH1
TACH2
TACH3
nHWM_INT