MAX6640 데이터 시트보기 (PDF) - Maxim Integrated

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MAX6640

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 3. 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

0000 channel 2 (+128°C)

—

—

—

—

—

—

LSB

( 1° C )

R

02h

0000

0000

Status byte

Channel 1

ALERT

Channel 2

ALERT

Channel 1

OT

Channel 2

OT

Channel 1

THERM

Channel 2

THERM

Fan 1 fault

Fan 2

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

R/W

04h

0011

Global

0 = run,

POR

0=

source: Reserved Reserved Reserved Reserved

0000

configuration

1= stby

1 = reset enabled, 1 = local,

1 = 0 = remote

disabled

2

R

05h

0000

0000

Channel 1

extended

temperature

MSB

(0.5°C)

—

LSB Reserved Reserved Reserved Reserved Diode

(0.125°C)

fault

R

06h

0000

Channel 2

extended

MSB

—

LSB Reserved Reserved Reserved Reserved Diode

0000 temperature (0.5°C)

(0.125°C)

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 MSB

—

—

—

—

—

—

LSB

1110

limit

( 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 )

Fan 1

Rate of

Rate of Fan 1

Fan 1

RPM

RPM

R/W

10h

1000

0010

configuration

1

PWM

mode

change

(MSB)

Rate of

change

change channel 1 channel 2

(LSB) control control

range

select

range

select

Minimum

Fan 1 RPM step-

RPM step- Temp

Temp

PWM

fan

R/W

11h

0000

0000

Configuration

2a

size A

(MSB)

RPM step- RPM step-

size A size A

size A

(LSB)

step-size

A (MSB)

step-size

A (LSB)

100% duty

cycle

speed

0 = 0%,

1= value

in 22h

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