W83627DHG-PT Nuvoton Technology Corporation of America, W83627DHG-PT Datasheet - Page 60

• Manufacturer Part Number: W83627DHG-PT
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of W83627DHG-PT

• Pin Count: 128
• Lead Free Status / RoHS Status: Compliant

8.6.3.2. Fan Speed Cruise
Four pairs of fan input sensors and fan outputs in Fan Speed Cruise
Fan Speed Cruise
BIOS by a fan speed count (the amount of time between clock input signals, not the number of clock
input signals in a period of time) and an interval (e.g., 160 ± 10). As long as the fan speed count is in
the specified range, fan output remains the same. If the fan speed count is higher than the high end
(e.g., 170), fan output increases to make the count lower. If the fan speed count is lower than the low
end (e.g., 150), fan output decreases to make the count higher. One example is illustrated in this
figure.
The following tables show current temperatures, fan output values and the relative control registers at
Thermal Cruise
Current CPU
Temperature
Current SYS
Temperature
Current AUX
Temperature
Current
CPUFANOUT0
Output Value
Current
SYSFANOUT
DESCRIPTION
•
•
•
•
SYSFANIN and SYSFANOUT
CPUFANIN0 and the temperature sensor selected by Bank0 Index 49h, bits 2 ~ 0
AUXFANOUT and the temperature sensor selected by Bank0 Index 49h, bits 6 ~ 4
CPUFANOUT1 and the temperature sensor selected by Bank0 Index 4Ah, bits 7 ~ 5
TM
Count
and Fan Speed Cruise
TM
Fan
output
170
160
150
Bank1 Index
50h ,51h
Bank 0 Index
27h
Bank2 Index
50h,51h
Bank0 Index
03h
Bank0 Index
01h
mode keeps the fan speed in a specified range. First, this range is defined in
REGISTER
ADDRESS
Table 8-6 Display Registers - at S
Figure 8-14 Mechanism of Fan Speed Cruise
(%)
100
TM
50
0
Mode
A
CPUTIN Temperature
Sensor
SYSTIN Temperature
Sensor
AUXTIN Temperature
Sensor
CPUFANOUT0 Output
Value Select
SYSFANOUT Output
Value Select
TM
REGISTER NAME
W83627DHG-P/W83627DHG-PT
mode.
-50-
C
MART
Read only
Read only
Read only
80h / FFh by
strapping
FFh
F
ATTRIBUTE
AN
Publication Release Date: July 09, 2009
TM
TM
TM
mode.
I Mode
Mode
8 MSB, 1°C bit 7,
0.5 °C
8 MSB, 1°C
8 MSB, 1°C bit 7,
0.5 °C
bits 7~0
CPUFANOUT0
Value
bits 7~0
SYSFANOUT Value
BIT DATA
Version 1.94