参数资料
型号: ADT7462ZEVB
厂商: ON Semiconductor
文件页数: 70/82页
文件大小: 0K
描述: BOARD EVALUATION FOR ADT7462
产品变化通告: MFG CHG Notification ADI to ON Semi
标准包装: 1
类型: 温度传感器
适用于相关产品: ADT7462
所含物品: 评估板
其它名称: EVAL-ADT7462EBZ
EVAL-ADT7462EBZ-ND
ADT7462
Table 62. REGISTER 0X21, REGISTER 0X22, REGISTER 0X23, REGISTER 0X24 ? PWM1, PWM2, PWM3
AND PWM4 CONFIGURATION REGISTERS
Bit
[2:0]
3
4
[7:5]
Name
Spin-Up
Timeout
SLOW
INV
BHVR
R/W
R/W
R/W
R/W
R/W
Description
These bits set the duration of the fan startup timeout and the timeout for the fan freewheeling
test.
000 = No Startup Timeout
001 = 100 ms
010 = 250 ms
011 = 400 ms
100 = 667 ms
101 = 1 sec
110 = 2 sec
111 = 32 sec
Setting this bit to 1 makes the ramp rate of the enhance acoustics mode four times longer.
Setting this bit to 0, the PWM outputs are active low. Setting this bit to 1, the PWM outputs are
active high (Default).
These bits determine which temperature channel controls the fans in the automatic fan speed
control loop.
000 = Local Temperature
001 = Remote 1 Temperature
010 = Remote 2 Temperature
011 = Remote 3 Temperature
100 = Off
101 = Maximum Fan Speed Calculated by the Local and Remote 3 Temperature Channels
110 = Maximum Fan Speed Calculated by All Four Channels
111 = Manual Mode
Table 63. REGISTER 0X25 ? PWM1, PWM2 FREQUENCY (Note 1)
Bit
0
1
[4:2]
[7:5]
Name
Min 1
Min 2
Low Freq 1
Low Freq 2
R/W
R/W
R/W
R/W
R/W
Description
When the ADT7462 is in automatic fan control mode, this bit defines whether PWM1 is off
(0% duty cycle) or at minimum PWM1 duty cycle when the controlling temperature is below its
T MIN ? hysteresis value.
0 = 0% duty cycle below T MIN ? hysteresis (Default); 1 = minimum PWM1 duty cycle below
T MIN ? hysteresis.
When the ADT7462 is in automatic fan control mode, this bit defines whether PWM2 is off
(0% duty cycle) or at minimum PWM2 duty cycle when the controlling temperature is below its
T MIN ? hysteresis value.
0 = 0% duty cycle below T MIN ? hysteresis (Default); 1 = minimum PWM2 duty cycle below
T MIN ? hysteresis.
These bits set the frequency of PWM1 when configured in low frequency mode.
000 = 11 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
These bits set the frequency of PWM2 when configured in low frequency mode.
000 = 11 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
1. POR = 0x90, Lock = Y, SW Reset = Y.
http://onsemi.com
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