參數(shù)資料
型號(hào): ADT7463
廠商: Analog Devices, Inc.
英文描述: dB COOL Remote Thermal Controller and Voltage Monitor
中文描述: 分貝超酷的遠(yuǎn)程熱控制器和電壓監(jiān)視器
文件頁(yè)數(shù): 41/53頁(yè)
文件大?。?/td> 719K
代理商: ADT7463
REV. 0
ADT7463
–41–
Table XXI. Register 0x62 – Enhance Acoustics Reg 1 (Power-On Default = 0x00)
Bit
<2:0>
Name
ACOU
R/W
*
Read/Write
Description
These bits select the Ramp Rate applied to the PWM1 output. Instead of PWM1 jump-
ing instantaneously to its newly calculated speed, PWM1 will ramp gracefully at the rate
determined by these bits. This feature enhances the acoustics of the fan being driven by
the PWM1 output.
Time Slot Increase
Time for 33% to 100%
000 = 1
35 s
001 = 2
17.6 s
010 = 3
1.8 s
011 = 5
7 s
100 = 8
4.4 s
101 = 12
3 s
110 = 24
1.6 s
111 = 48
0.8 s
When this bit is 1, Acoustic Enhancement is enabled on PWM1 output.
SYNC = 1 synchronizes fan speed measurements on TACH2, TACH3, and
TACH4 to PWM3. This allows up to three fans to be driven from PWM3 output and
their speeds to be measured.
SYNC = 0, only TACH3 and TACH4 are synchronized to PWM3 output.
When the ADT7463 is in Automatic Fan Control Mode, this bit defines whether PWM 1
is off (0% duty cycle) or at PWM 1 Minimum Duty Cycle when the controlling tem-
perature is below its T
MIN
– Hysteresis value.
0 = 0% duty cycle below T
MIN
– Hysteresis
1 = PWM 1 Minimum Duty Cycle below T
MIN
– Hysteresis
When the ADT7463 is in Automatic Fan Speed Control Mode, this bit defines whether
PWM 2 is off (0% duty cycle) or at PWM 2 Minimum Duty Cycle when the controlling
temperature is below its T
MIN
– Hysteresis value.
0 = 0% duty cycle below T
MIN
– Hysteresis
1 = PWM 2 Minimum Duty Cycle below T
MIN
– Hysteresis
When the ADT7463 is in Automatic Fan Speed Control Mode, this bit defines whether
PWM 3 is off (0% duty cycle) or at PWM 3 Minimum Duty Cycle when the controlling
temperature is below its T
MIN
– Hysteresis value.
0 = 0% duty cycle below T
MIN
– Hysteresis
1 = PWM 3 Minimum Duty Cycle below T
MIN
– Hysteresis
<3>
<4>
EN1
SYNC
Read/Write
Read/Write
<5>
MIN1
Read/Write
<6>
MIN2
Read/Write
<7>
MIN3
Read/Write
*
This register becomes read-only when the Configuration Register 1 Lock bit is set to 1. Any further attempts to write to this register will have no effect.
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