MAX6664AEE+T【PDF 17/24 页】IC TEMP MON FAN CNTRL 16-QSOP

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Sheet目录44

13页 14页 15页 16页 [17页]18页 19页 20页 21页

Temperature Monitors and

PWM Fan Controllers

______________________________________________________________________________________ 17

Addr H

READ/WRITE POR STATE

DESCRIPTION

0001 1110

(30癈)

Local temperature data:

This register contains the 8 MSBs of the local temperature measurement.

0001 1110

(30癈)

Remote temperature data:

This register contains the 8 MSBs of the local temperature measurement.

R/W

0000 0000

Local temperature offset:

Bit 7: Sign bit; when zero, the offset value in bits [3:0] is added to the measured local

temperature reading. When this bit is 1, the offset value in bits [3:0] is subtracted

from the local temperature reading.

Bits [6:4] Unused. This bits normally reads back zeros.

Bits [3:0] Offset value. This is added to or subtracted from the measured local

temperature reading.

R/W

0000 0000

Remote temperature offset:

Bit 7: Sign bit: When 0, the offset value in bits [3:0] is added to the measured remote

temperature reading. When this bit is 1, the offset value in bits [3:0] is subtracted

from the remote temperature reading.

Bits [6:4] Unused: These bits normally read back zeros.

Bits [3:0] Offset value: This is added to or subtracted from the measured remote

temperature reading.

R/W

1111 1111

Fan tachometer high-limit register:

Contains the limit of the fan-speed measurement. It detects a stalled fan if the

measured fan-speed data (reg_08h; proportional to fan period) is larger than the limit.

R/W

0011 1100

(60癈)

Local temp high limit:

Contains the local high-temperature interrupt limit.

R/W

0000 0000

(0癈)

Local temp low limit:

Contains the local low-temperature interrupt limit.

R/W

0100 0110

(70癈)

Local temp THERM limit:

Contains the local high-temperature limit for the THERM output. Default is +70癈 for

the MAX6663/MAX6664; CRIT0 and CRIT1 determine the default value for the

MAX6653 (see Table 1).

R/W

0101 0000

(80癈)

Remote temp high limit:

Contains the remote high-temperature interrupt limit.

R/W

0000 0000

(0癈)

Remote temp low limit:

Contains the remote low-temperature interrupt limit.

R/W

0110 0100

(100癈)

Remote temp THERM limit:

Contains the remote high-temperature limit for the THERM output. Default is +100癈

for the MAX6663/MAX6664; CRIT0 and CRIT1 determine the default value for the

MAX6653 (see Table 1).

R/W

0101 1111

(95癈)

Local temp shutdown limit:

Contains the local high-temperature limit for the SDL output. CRIT0 and CRIT1

determine the default value for the MAX6653 (see Table 1).

R/W

0111 1101

(125癈)

Remote temp shutdown limit:

Contains the remote high-temperature limit for the SDR output. CRIT0 and CRIT1

determine the default value for the MAX6653 (see Table 1).

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