f75334 Feature Integration Technology Inc., f75334 Datasheet - Page 44

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

6-0 BOUND2TMP1
6-0 BOUND3TMP1
6-0 BOUND4TMP1
7-0
7-0 SEC2SPEED1
Bit
Bit
Bit
Bit
8.2.39 VT1 BOUNDARY 3 TEMPERATURE – Index A8h
8.2.40 VT1 BOUNDARY 4 TEMPERATURE – Index A9
8.2.41 FAN1 SEGMENT 1 SPEED COUNT – Index AAh
8.2.42 FAN1 SEGMENT 2 SPEED COUNT – Index ABh
7
7
Reserved
Reserved
SEC1SPEED1
Name
Name
Name
Name
R/W
R/W Default
R/W
R/W Default
R/W
R/W Default
R/W
R/W Default
R/W
RO
RO
FFh
(100%)
(50
(40
(30
(85%)
1Eh
D9h
28h
32
0
0
o
o
o
C)
C)
C)
The 2
When VT1 temperature is exceed this boundary, FAN1 expect value will
load from segment 2 register (index AB)h.
When VT1 temperature is below this boundary – hysteresis, FAN1 expect
value will load from segment 3 register (index ABh).
Return 0 when read.
The 3
When VT1 temperature is exceed this boundary, FAN1 expect value will
load from segment 3 register (index AC)h.
When VT1 temperature is below this boundary – hysteresis, FAN1 expect
value will load from segment 4 register (index ACh).
Return 0 when read.
The 4
When VT1 temperature is exceed this boundary, FAN1 expect value will
load from segment 4 register (index ADh).
When VT1 temperature is below this boundary – hysteresis, FAN1 expect
value will load from segment 5 register (index ADh).
The meaning of this register is depending on the FAN1_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:
2’b01: The value that set in this byte is mean the expect PWM duty-cycle
in this temperature section.
Depend on the FAN1_MODE(CR96[1:0]) 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.
X% full speed: The value programming in this byte is
Expect
60% full speed: (100-60)*32/60, so user must program 21 to this reg.
st
st
st
BOUNDARY temperature for VT1 in temperature mode.
BOUNDARY temperature for VT1 in temperature mode.
BOUNDARY temperature for VT1 in temperature mode.
37
speed
=



32
+
32
value

× 

Description
Description
Description
Description
Full
speeed
(100-X)*32/X
F75334
July, 2007
V0.25P