MAX6639FAEE(2008) 데이터 시트보기 (PDF) - Maxim Integrated

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MAX6639FAEE
(Rev.:2008)

2-Channel Temperature Monitor with Dual, Automatic, PWM Fan-Speed Controller

Maxim Integrated 

2-Channel Temperature Monitor with Dual,

Automatic, PWM Fan-Speed Controller

Table 4. Register Map

READ/

WRITE

REGISTER

NO.

ADDRESS

POR

STATE

FUNCTION

D7

D6

D5

D4

D3

D2

D1

D0

R

00h

0000 Temperature MSB

0000 channel 1 (+128°C)

—

—

—

—

—

—

LSB

( 1° C )

R

01h

0000 Temperature MSB

—

—

—

—

—

—

LSB

0000 channel 2 (+128°C)

( 1° C )

0000

Channel 1 Channel 2 Channel 1 Channel 2 Channel 1 Channel 2

Fan 2

R

02h

0000 Status byte ALERT ALERT

OT

OT

THERM THERM Fan 1 fault fault

R/W

03h

0000

0011

Output mask

Channel 1

ALERT

Channel 2

ALERT

Channel 1

OT

Channel 2

OT

Channel 1

THERM

Channel 2

THERM

Fan 1 fault

Fan 2

fault

SMBus Temp

Run

timeout: channel 2 PWM

R/W

04h

0011

0000

Global

configuration

0 = run,

1= stby

POR:

1 = reset

0=

enabled,

source:

1 = local,

output

frequency

Reserved

Reserved Reserved

1 = 0 = remote range

disabled

2

Channel 1

R

05h

0000

0000

extended

temperature

MSB

(0.5°C)

—

LSB Reserved Reserved Reserved Reserved Diode

(0.125°C)

fault

Channel 2

R

06h

0000

0000

extended

temperature

MSB

(0.5°C)

—

LSB

(0.125°C)

Reserved

Reserved

Reserved

Reserved

Diode

fault

R/W

08h

0101 Channel 1

0101 ALERT limit

MSB

—

—

—

—

—

—

LSB

( 1° C )

R/W

09h

0101 Channel 2

0101 ALERT limit

MSB

—

—

—

—

—

—

LSB

( 1° C )

R/W

0Ah

0110 Channel 1 OT

1110

limit

MSB

—

—

—

—

—

—

LSB

( 1° C )

R/W

0Bh

0110 Channel 2 OT

1110

limit

MSB

—

—

—

—

—

—

LSB

( 1° C )

R/W

0Ch

0101 Channel 1

0101 THERM limit

MSB

—

—

—

—

—

—

LSB

( 1° C )

R/W

0Dh

0101 Channel 2

0101 THERM limit

MSB

—

—

—

—

—

—

LSB

( 1° C )

R/W

10h

1000

Fan 1

configuration

PWM

Rate of

change

Rate of

Rate of Fan 1

Fan 1

RPM

change channel 1 channel 2 range

RPM

range

0010

1

mode

(MSB) change (LSB)

control control select select

Minimum

R/W

11h

0000

Fan 1

Configuration

RPM step-

size A

RPM step-

RPM step-

RPM step-

size A

Temp

step-size

Temp

step-size

PWM

fan

speed:

0000

2a

(MSB)

size A

size A

(LSB)

A (MSB) A (LSB)

Polarity 0 = 0%,

1= value

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