ADT7467 Analog Devices, Inc., ADT7467 Datasheet - Page 68

• Manufacturer Part Number: ADT7467
• Description: Dbcool Remote Thermal Monitor And Fan Controller
• Manufacturer: Analog Devices, Inc.

ADT7467
Table 34. TEMP T
Register Address
0x5F
0x60
0x61
Bit
<2:0>
<3>
<7:4>
1
These registers become read-only registers when the Configuration Register 1 lock bit is set to 1. Any subsequent attempts to write to these registers fail.
Name
FREQ
THRM
RANGE
RANGE
/PWM Frequency Registers
R/W
Read/write
Read/write
Read/write
R/W
Read/write
Read/write
Read/write
1
Description
Remote 1 T
Local temperature T
Remote 2 T
Description
These bits control the PWMx frequency.
000 = 11.0 Hz
001 = 14.7 Hz
010 = 22.1 Hz
011 = 29.4 Hz
100 = 35.3 Hz (default)
101 = 44.1 Hz
110 = 58.8 Hz
111 = 88.2 Hz
THRM = 1 causes the THERM pin (Pin 9) to assert low as an output when this
temperature channel’s THERM limit is exceeded by 0.25°C. The THERM pin remains
asserted until the temperature is equal to or below the THERM limit. The minimum
time that THERM asserts is one monitoring cycle. This allows clock modulation of
devices that incorporate this feature.
THRM = 0 makes the THERM pin act as an input when Pin 9 is configured as THERM, for
example, for Pentium 4 PROCHOT monitoring.
These bits determine the PWM duty cycle vs. the temperature slope for automatic fan
control.
0000 = 2°C
0001 = 2.5°C
0010 = 3.33°C
0011 = 4°C
0100 = 5°C
0101 = 6.67°C
0110 = 8°C
0111 = 10°C
1000 = 13.33°C
1001 = 16°C
1010 = 20°C
1011 = 26.67°C
1100 = 32°C (default)
1101 = 40°C
1110 = 53.33°C
1111 = 80°C
Rev. A | Page 68 of 80
RANGE
RANGE
/PWM1 frequency.
/PWM3 frequency.
RANGE
/PWM2 frequency.
Power-On Default
0xC4
0xC4
0xC4