EMC6D102-CZC View Datasheet(PDF) - SMSC -> Microchip

Part Name

Description

MFG CO.

EMC6D102-CZC

Fan Control Device with Hardware Monitoring and Acoustic Noise Reduction Features

SMSC -> Microchip 

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Fan Control Device with Hardware Monitoring and Acoustic Noise Reduction Features

Datasheet

These registers specify the minimum duty cycle that the PWM will output when the measured

temperature reaches the Temperature LIMIT register setting in Auto Fan Control Mode.

Table 7.13 PWM Duty vs. Register Setting

MINIMUM PWM DUTY

0%

.

.

.

25%

.

.

.

50%

.

.

.

100%

VALUE (DECIMAL)

0

.

.

.

64

.

.

.

128

.

.

.

255

VALUE (HEX)

00h

.

.

.

40h

.

.

.

80h

.

.

.

FFh

7.2.20 Registers 67-69h: Zone Low Temperature Limit

Register

Address

67h

68h

69h

Read/

Write

R/W

R/W

R/W

Register Name

Zone 1 Low Temp Limit

Zone 2 Low Temp Limit

Zone 3 Low Temp Limit

Bit 7

(MSb)

7

7

7

Bit 6

6

6

6

Bit 5

5

5

5

Bit 4 Bit 3 Bit 2

4

3

2

4

3

2

4

3

2

Bit 1

1

1

1

Bit 0

(LSb)

0

0

0

Default

Value

5Ah

5Ah

5Ah

These registers become read only when the Lock bit is set. Any further attempts to write to these

registers shall have no effect.

These are the temperature limits for the individual zones. When the current temperature equals this

limit, the fan will be turned on if it is not already. When the temperature exceeds this limit, the fan

speed will be increased according to the auto fan algorithm based on the setting in the Zone x Range

/ PWMx Frequency register. Default = 90°C=5Ah

Revision 0.4 (04-05-05)

64

DATASHEET

SMSC EMC6D102

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