W83627UHG Nuvoton Technology Corporation of America, W83627UHG Datasheet - Page 61

• Manufacturer Part Number: W83627UHG
• Description: IC I/O CONTROLLER 128-QFP
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of W83627UHG

• Applications: PC's, PDA's
• Interface: LPC
• Voltage - Supply: 3.3V, 5V
• Package / Case: 128-XFQFN
• Mounting Type: Surface Mount
• Pin Count: 128
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

7.7.1.2
The SMI# pin can create an interrupt if a fan count crosses a specified fan limit (rises above it or falls
below it). This interrupt must be reset by reading all the interrupt status registers, or subsequent
events do not generate interrupts. This mode is illustrated in the figure above.
7.7.1.3
The SMI# pin can create interrupts that depend on the temperatures measured by SYSTIN and
CPUTIN. These interrupts are divided into two parts, one for SYSTIN and the other for CPUTIN.
7.7.1.3.1
The SMI# pin has three interrupt modes with SYSTIN.
(1) Comparator Interrupt Mode
(2) Two-Times Interrupt Mode
127'C
T
SMI#
HYST
T
OI
In this mode, the SMI# pin can create an interrupt when the current temperature rises above T
when the current temperature falls below T
and generates an interrupt, this mode does not generate additional interrupts, even if the
temperature remains above T
reset by reading all the interrupt status registers, or subsequent events do not generate interrupts.
This is illustrated in the figure above.
This mode is enabled by setting T
In this mode, the SMI# pin can create an interrupt as long as the current temperature exceeds T
(Over Temperature). This interrupt can be reset by reading all the interrupt status registers, or
subsequent events do not generate interrupts. If the interrupt is reset, the SMI# pin continues to
create interrupts until the temperature goes below T
This mode is enabled by setting T
Index 4Ch, bit 5 to zero.
Fan SMI# Mode
Temperature SMI# Mode
Temperature Sensor 1(SYSTIN) SMI# Interrupt
*
*Interrupt Reset when Interrupt Status Registers are read
*
*
Figure 7-18 SMI Mode of SYSTIN I
O
, until the temperature falls below T
HYST
HYST
(Temperature Hysteresis) to 127°C.
(Temperature Hysteresis) lower than T
*
HYST
-50-
. Once the temperature rises above T
T
HYST
SMI#
T
O
OI
. This is illustrated in the figure below.
*
HYST
. This interrupt must be
W83627UHG
O
and setting Bank0
*
O
, however,
*
O
or
O