f75334 Feature Integration Technology Inc., f75334 Datasheet - Page 47

• Manufacturer Part Number: f75334
• Description: Performance Controller
• Manufacturer: Feature Integration Technology Inc.

6-0 BOUND4TMP2
7-0
7-0 SEC2SPEED2
7-0 SEC3SPEED2
Bit
Bit
Bit
Bit
Bit
8.2.50 VT2 BOUNDARY 4 TEMPERATURE – Index B9
8.2.51 FAN2 SEGMENT 1 SPEED COUNT – Index BAh
8.2.52 FAN2 SEGMENT 2 SPEED COUNT – Index BBh
8.2.53 FAN2 SEGMENT 3 SPEED COUNT
8.2.54 FAN2 SEGMENT 4 SPEED COUNT
7
Reserved
SEC1SPEED2
Name
Name
Name
Name
Name
R/W Default
R/W
R/W Default
R/W
R/W Default
R/W
R/W Default
R/W
R/W Default
RO
(100%)
(30
(85%)
(70%)
1Eh
FFh
D9h
B2h
0
o
C)
Return 0 when read.
The 4
When VT2 temperature is exceed this boundary, FAN2 expect value will
load from segment 4 register (index BDh).
When VT2 temperature is below this boundary – hysteresis, FAN2 expect
value will load from segment 5 register (index BDh).
The meaning of this register is depending on the FAN2_MODE(CR96)
2’b00: The value that set in this byte is the relative expect fan speed % of
the full speed in this temperature section.
Ex:
(100-X)*32/X
2’b01: The value that set in this byte is mean the expect PWM
duty-cycle in this temperature section.
Depend on the FAN2_MODE(CR96[3:2]) register setting:
2’b00: The value that set in this byte is the relative expect fan speed %
of the full speed in this temperature section.
2’b01: The value that set in this byte is mean the expect PWM
duty-cycle in this temperature section.
Depend on the FAN2_MODE(CR96[3:2]) register setting:
2’b00: The value that set in this byte is the relative expect fan speed %
of the full speed in this temperature section.
2’b01: The value that set in this byte is mean the expect PWM duty-cycle
in this temperature section.
100%:full speed: User must set this register to 0.
– Index BCh
– Index BDh
Expect
60% full speed: (100-60)*32/60, so user must program 21 to this reg.
st
X% full speed: The value programming in this byte is
BOUNDARY temperature for VT2 in temperature mode.
40
speed
=



32
+
32
value

× 

Description
Description
Description
Description
Description
Full
speeed
F75334
July, 2007
V0.25P