F71869F datasheet(79/116 Pages) FINTEK

79 / 116 page

Fintek

Feature Integration Technology Inc.

2009

V1.1

F71869

6.6.61 VT3 BOUNDARY 2 TEMPERATURE – Index C9h

Bit

Name

R/W Default

Description

7-0

BOUND2TMP3

R/W

1Eh

(30

oC)

The second boundary temperature for VT3 in temperature mode.

When VT3 temperature exceeds this boundary, FAN3 expect value

will load from segment 2 register (index CB)h.

When VT3 temperature is under this boundary – hysteresis, FAN3

expect value will load from segment 3 register (index CBh).

This byte is a 2’s complement value ranging from -128’C ~ 127’C.

6.6.62 FAN3 SEGMENT 1 SPEED COUNT – Index CAh

Bit

Name

R/W Default

Description

7-0

SEC1SPEED3

R/W

FFh

(100%)

The meaning of this register is depending on the FAN3_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%:full speed: User must set this register to 0.

60% full speed: (100-60)*32/60, so user must program 21 to this reg.

X% full speed: The value programming in this byte is

(100-X)*32/X

2’b01:

The value that set in this byte is mean the expect PWM

duty-cycle in this temperature section.

6.6.63 FAN3 SEGMENT 2 SPEED COUNT – Index CBh

Bit

Name

R/W Default

Description

7-0

SEC2SPEED3

R/W

D9h

(85%)

The meaning of this register is depending on the FAN3_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.

2’b01:

The value that set in this byte is mean the expect PWM

duty-cycle in this temperature section.

6.6.64 FAN3 SEGMENT 3 SPEED COUNT – Index CEh

Bit

Name

R/W Default

Description

7-0

SEC3SPEED3

R/W

80h

(50%)

The meaning of this register is depending on the FAN3_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.

2’b01:

The value that set in this byte is mean the expect PWM

duty-cycle in this temperature section.

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