參數(shù)資料
型號: ADT7460ARQ
廠商: ANALOG DEVICES INC
元件分類: 模擬信號調(diào)理
英文描述: dB COOL?? Remote Thermal Controller and Fan Controller
中文描述: SPECIALTY ANALOG CIRCUIT, PDSO16
封裝: 0.025 INCH PITCH, MO-137AB, QSOP-16
文件頁數(shù): 39/48頁
文件大?。?/td> 695K
代理商: ADT7460ARQ
REV. 0
ADT7460
–39–
Table XX. Register 0x62 – Enhance Acoustics Register 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 jumping
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 ADT7460 is in Automatic Fan Control Mode, this bit defines whether PWM1 is
off (0% duty cycle) or at PWM 1 Minimum Duty Cycle when the controlling temperature 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 ADT7460 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 ADT7460 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.
相關(guān)PDF資料
PDF描述
ADT7461 【1∑C Temperature Monitor with Series Resistance Cancellation
ADT7461AR 【1∑C Temperature Monitor with Series Resistance Cancellation
ADT7461AR-REEL 【1∑C Temperature Monitor with Series Resistance Cancellation
ADT7461AR-REEL7 【1∑C Temperature Monitor with Series Resistance Cancellation
ADT7461ARM 【1∑C Temperature Monitor with Series Resistance Cancellation
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