OMO ElectronicOMO Electronic
Expand menu
Hello, Sign inMy Account
0 Cart

ADM1031ARQZ-REEL

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P32
ADM1031
http://onsemi.com
28
Table 23. REGISTER 0X20 FAN CHARACTERISTICS REGISTER 1 POWER-ON DEFAULT = 5DH
Bit Name R/W Description
<2:0> Fan 1 Spin-Up R/W These bits contain the fan spin-up time to allow Fan 1 to overcome its own inertia.
000 = 200 ms
001 = 400 ms
010 = 600 ms
011 = 800 ms
100 = 1 sec
101 = 2 sec (Default)
110 = 4 sec
111 = 8 sec
<5:3> PWM 1 Frequency R/W These bits allow programmability of the nominal PWM 1 output frequency driving Fan 1.
(Default = 31 Hz.)
000 = 11.7 Hz
001 = 15.6 Hz
010 = 23.4 Hz
011 = 31.25 Hz (Default)
100 = 37.5 Hz
101 = 46.9 Hz
110 = 62.5 Hz
111 = 93.5 Hz
<7:6> Speed Range, N R/W Speed range
00 = 1
01 = 2
10 = 4
11 = 8
Table 24. REGISTER 0X21 FAN CHARACTERISTICS REGISTER 2 POWER-ON DEFAULT = 5H
Bit Name R/W Description
<2:0> Fan 2 Spin-Up R/W These bits contain the fan spin-up time to allow Fan 2 to overcome its own inertia.
000 = 200 ms
001 = 400 ms
010 = 600 ms
011 = 800 ms
100 = 1 sec
101 = 2 sec (Default)
110 = 4 sec
111 = 8 sec
<5:3> PWM 2 Frequency R/W These bits allow programmability of the nominal PWM 2 output frequency driving Fan 1.
(Default = 31 Hz.)
000 = 11.7 Hz
001 = 15.6 Hz
010 = 23.4 Hz
011 = 31.25 Hz (Default)
100 = 37.5 Hz
101 = 46.9 Hz
110 = 62.5 Hz
111 = 93.5 Hz
<7:6> Speed Range, N R/W Speed range
00 = 1
01 = 2
10 = 4
11 = 8
Table 25. REGISTER 0X22 FAN SPEED CONFIGURATION REGISTER POWER-ON DEFAULT = 55H
Bit Name R/W Description
<3:0> Normal/Min Spd 1 R/W This nibble contains the normal speed value for Fan 1. When in automatic fan speed
control mode, this nibble contains the minimum speed at which Fan 1 runs. Default is
0x05 for 33% PWM duty cycle.
<7:4> Normal/Min Spd 2 R/W This nibble contains the normal speed value for Fan 2. When in automatic fan speed
control mode, this nibble contains the minimum speed at which Fan 2 runs. Default is
0x05 for 33% PWM duty cycle.
ADM1031
http://onsemi.com
29
Table 26. REGISTER 0X23 FAN FILTER REGISTER POWER-ON DEFAULT = 50H
Bit Name R/W Description
<7> Spin-Up Disable R/W When set to 1, disables fan spin-up.
<6:5> Ramp Rate R/W These bits set the ramp rate. (Default = 31 Hz)
00 = 1
01 = 2
10 = 4 (Default)
11 = 8
<4:2> ADC Sample Rate R/W These bits set the sampling rate for the ADC.
000 = 87.5 Hz
001 = 175 Hz
010 = 350 Hz
011 = 700 Hz
100 = 1.4 kHz (Default)
101 = 2.8 kHz
110 = 5.6 kHz
111 = 11.2 kHz
<1> Fan 2 Filter En R/W This bit enables fan filtering for Fan 2.
<0> Fan 1 Filter En R/W This bit enables fan filtering for Fan 1.
Table 27. REGISTER 0X24 LOCAL TEMP T
MIN
/T
RANGE
POWER-ON DEFAULT = 41H
Bit Name R/W Description
<7:3> > Local Temp T
MIN
R/W Contains the minimum temperature value for automatic fan speed control based on
local temperature readings. T
MIN
can be programmed to positive values only in 4C
increments. Default is 32C.
00000 = 0C
00001 = 4C
00010 = 8C
00011 = 12C
|
|
01000 = 32C (Default)
|
|
|
11110 = 120C
11111 = 124C
<2:0> Local Temp T
RANGE
R/W This nibble contains the temperature range value for automatic fan speed control
based on the local temperature readings.
000 = 5C
001 = 10C (Default)
010 = 20C
011 = 40C
100 = 80C
ADM1031
http://onsemi.com
30
Table 28. REGISTER 0X25 REMOTE 1 TEMP T
MIN
/T
RANGE
POWER-ON DEFAULT = 61H
Bit Name R/W Description
<7:3> Remote 1 Temp T
MIN
R/W Contains the minimum temperature value for automatic fan speed control based on
local temperature readings. T
MIN
can be programmed to positive values only in 4C
increments. Default is 32C.
00000 = 0C
00001 = 4C
00010 = 8C
00011 = 12C
|
|
01100 = 48C
|
|
|
11110 = 120C
11111 = 124C
<2:0> Remote 1 Temp T
RANGE
R/W This nibble contains the temperature range value for automatic fan speed control
based on the Remote 1 Temp Readings.
000 = 5C
001 = 10C (Default)
010 = 20C
011 = 40C
100 = 80C
Table 29. REGISTER 0X26 REMOTE 2 TEMP T
MIN
/T
RANGE
POWER-ON DEFAULT = 61H
Bit Name R/W Description
<7:3> Remote 2 Temp T
MIN
R/W Contains the minimum temperature value for automatic fan speed control based on
Remote 2 Temperature Readings. T
MIN
can be programmed to positive values only
in 4C increments. Default is 32C.
00000 = 0C
00001 = 4C
00010 = 8C
00011 = 12C
|
|
01100 = 48C (Default)
|
|
11110 = 120C
11111 = 124C
<2:0> Remote 2 Temp T
RANGE
R/W This nibble contains the temperature range value for automatic fan speed control
based on the Remote 2 Temp Readings.
000 = 5C
001 = 10C (Default)
010 = 20C
011 = 40C
100 = 80C
Table 30. REGISTER 0X3F THERM BEHAVIOR/REVISION POWER-ON DEFAULT = 80H
Bit Name R/W Description
<7> THERM-to-Fan En R/W Setting this bit to 1, enables the fan to run full-speed when THERM is asserted low.
This allows the system to be run in performance mode. Clearing this bit to 0 disables
the fan from running full-speed whenever THERM
is asserted low. This allows the
system to run in silent mode. (Power-On Default = 1).
<3:0> Revision R This nibble contains the revision number for the ADM1031.
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P32

ADM1031ARQZ-REEL

Mfr. #:
Buy ADM1031ARQZ-REEL
Manufacturer:
ON Semiconductor
Description:
IC SENSOR 2TEMP/FAN CTRL 16QSOP
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet