參數(shù)資料
型號(hào): ADT7460
廠商: Analog Devices, Inc.
英文描述: dB COOL?? Remote Thermal Controller and Fan Controller
中文描述: 分貝很酷吧??遠(yuǎn)程熱控制器和風(fēng)扇控制器
文件頁(yè)數(shù): 28/48頁(yè)
文件大?。?/td> 695K
代理商: ADT7460
REV. 0
–28–
ADT7460
PWM DUTY CYCLE REGISTERS
Reg. 0x30 PWM1 Duty Cycle = 0xFF (100% default)
Reg. 0x31 PWM2 Duty Cycle = 0xFF (100% default)
Reg. 0x32 PWM3 Duty Cycle = 0xFF (100% default)
By reading the PWMx Current Duty Cycle Registers, you can
keep track of the current duty cycle on each PWM output, even
when the fans are running in Automatic Fan Speed Control
Mode or Acoustic Enhancement Mode.
VARY PWM DUTY
CYCLE WITH 8-BIT
RESOLUTION
Figure 37. Control PWM Duty Cycle Manually
with a Resolution of 0.39%
OPERATING FROM 3.3 V STANDBY
The ADT7460 has been specifically designed to operate from a
3.3 V STBY supply. In computers that support S3 and S5
states, the core voltage of the processor will be lowered in these
states. If using the Dynamic T
MIN
Mode, lowering the core
voltage of the processor would change the CPU temperature
and change
the dynamics of the system under dynamic T
MIN
control.
Likewise, when monitoring
THERM
, the
THERM
timer
should be disabled during these states.
XOR TREE TEST MODE
The ADT7460 includes an XOR Tree Test Mode. This mode is
useful for in-circuit test equipment at board-level testing. By
applying stimulus to the pins included in the XOR Tree, it is
possible to detect opens or shorts on the system board. Figure 38
shows the signals that are exercised in the XOR Tree Test Mode.
PWM1/XTO
PWM3
PWM2
TACH4
TACH3
TACH2
TACH1
Figure 38. XOR Tree Test
The XOR Tree Test is invoked by setting Bit 0 (XEN) of the
XOR Tree Test Enable Register (Reg. 0x6F).
相關(guān)PDF資料
PDF描述
ADT7460ARQ dB COOL?? Remote Thermal Controller and Fan Controller
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
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