Rainbow-electronics MAX6641 Manual de usuario descargar pdf (Pagina 6)

MAX6641

SMBus-Compatible Temperature Monitor with

Automatic PWM Fan-Speed Controller

6 _______________________________________________________________________________________

READ/

WRITE

ADDRESS

POR

STATE

FUNCTION/

NAME

D7 D6 D5 D4 D3 D2 D1

R 00h

0000 0000

Read remote

(external)

temperature

MSB

(+128°C)

(+64°C)

(+32°C)

(+16°C) (+8°C) (+4°C) (+2°C)

LSB

(+1°C)

R 01h

0000 0000

Read local

(internal)

temperature

MSB

(+128°C)

(+64°C)

(+32°C)

(+16°C) (+8°C) (+4°C) (+2°C)

LSB

(+1°C)

R/W

02h

0000 00xx

Configuration

byte

Reserved

set to 0

Reserved

set to 0

Timeout: 0 =

enabled, 1 =

disabled

Fan

PWM

invert

Min duty

cycle:

0 = 0%,

1 = fan-

start duty

cycle

Spin-up

disable

R/W

03h

0110 1110

Remote-diode

temperature

OT limit

MSB

(+128°C)

(+64°C)

(+32°C)

(+16°C) (+8°C) (+4°C) (+2°C)

LSB

(+1°C)

R/W

04h

0101 0000

Local-diode

temperature

OT limit

MSB

(+128°C)

(+64°C)

(+32°C)

(+16°C) (+8°C) (+4°C) (+2°C)

LSB

(+1°C)

R 05h

00xx xxxx

OT status

Remote 1

= fault

Local 1 =

fault

XXXXXX

R/W

06h

00xx xxxx

OT mask

Remote 1

= masked

Local 1 =

masked

XXXXXX

R/W

07h

0110 000x

(96 = 40%)

Fan-start duty

cycle

MSB

(128/240)

(64/240) (32/240) ( 16/240) (8/240) (4/240)

LSB

(2/240)

R/W

08h

1111 000x

(240 =

100%)

Fan maximum

duty cycle

MSB

(128/240)

(64/240)

(32/240)

( 16/240) (8/240) (4/240)

LSB

(2/240)

R/W

09h

0000 000x

Fan target duty

cycle

MSB

(128/240)

(64/240)

(32/240)

( 16/240) (8/240) (4/240)

LSB

(2/240)

R 0Ah

0000 000x

Fan

instantaneous

duty cycle

MSB

(128/240)

(64/240)

(32/240)

( 16/240) (8/240) (4/240)

LSB

(2/240)

R/W

0Bh

0000 0000

Remote-diode

fan-start

temperature

MSB

(+128°C)

(+64°C)

(+32°C)

(+16°C) (+8°C) (+4°C) (+2°C)

LSB

(+1°C)

Table 1. Register Functions

1 2 3 4 5 6 7 8 9 10 11 ... 16 17

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Rainbow-electronics MAX6641 Manual de usuario Pagina 6

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