MAX6639(2005) Просмотр технического описания (PDF) - Maxim Integrated

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MAX6639
(Rev.:2005)

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

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 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

R

05h

0000

0000

Channel 1

extended

temperature

MSB

(0.5°C)

—

LSB

(0.125°C)

Reserved

Reserved

Reserved

Reserved

Diode

fault

R

06h

0000

0000

Channel 2

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 )

0101 Channel 2

LSB

R/W

09h

0101 ALERT limit MSB

—

—

—

—

—

—

( 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

0010

Fan 1

configuration

1

PWM

mode

Rate of

change

(MSB)

Rate of

change

Rate of Fan 1 Fan 1

change channel 1 channel 2

(LSB) control control

RPM

range

select

RPM

range

select

Minimum

R/W

11h

0000

0000

Fan 1

Configuration

2a

RPM step-

size A

(MSB)

RPM step-

size A

RPM step-

size A

RPM step-

size A

(LSB)

Temp

step-size

A (MSB)

Temp

step-size

A (LSB)

PWM

Polarity

fan

speed:

0 = 0%,

1= value

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